This section displays general and status information about drive arrays. Select a drive array controller entry from the Mass Storage list to display a submenu containing separate entries for Array Controller Information, Physical Drives, Logical Drives, and Storage System information. The following items display:
Array Controller Information
Array Accelerator Information
Physical Drive Information
Logical Drive Information
Tape Storage System Information
Tape Drive Information
Storage System Information
Select an array controller from the Mass Storage list to
display information for SMART and SMART-2 Array Controllers.
The SMART Controller is an intelligent 32-bit EISA-based array controller
containing up to two Fast SCSI-2 ports, which allow support of up to 14
drives when combined with the Compaq ProLiant Storage System. The SMART
Controller provides several modes of fault tolerance, including RAID
1, RAID 4 and RAID 5. On-line spares can be used across both SCSI ports.
The SMART-2 Array Controller is the next generation SMART drive array
controller. It can be EISA- or PCI-based. Its features include a modular
architecture, faster processor, support for fast and wide SCSI drives,
and a removable cache daughter card. The SMART-2 Array Controller supports
multiple logical volumes on a single set of physical drives (array).
Additionally, the SMART-2 Array Controller supports online volume
expansion, which allows an existing logical volume to be reconfigured
without data loss while the system is online.
The following information displays for each controller:
Model displays the type of controller card. The valid types are:
IDA - Compaq 32-Bit Intelligent Drive Array Controller. The physical drives are located inside the system.
IDA Expansion - Compaq 32-Bit Intelligent Drive Array Expansion Controller. The physical drives are located in the Array Expansion System that is connected to the system by a cable.
IDA-2 - Compaq Intelligent Drive Array-2 Controller (IDA-2). The physical drives are located inside the system.
SMART - The physical drives can be located inside the system or externally using the Compaq ProLiant Storage System.
SMART-2/E - The physical drives can be located inside the system or externally using the Compaq ProLiant Storage System.
SMART-2/P - The physical drives can be located inside the system or externally using the Compaq ProLiant Storage System.
SMART-2SL - The physical drives can be located inside the system or externally using the Compaq ProLiant Storage System.
SMART-2DH - The physical drives can be located inside the system or externally using the Compaq ProLiant Storage System.
SMART-221 - The physical drives can be located inside the system or externally using the Compaq ProLiant Storage System.
SMART-3100ES - This controller provides support for 3 internal Wide-Ultra SCSI-3 storage bays with up to 15 physical drives per bay.
SMART-3200 - The physical drives can be located inside the system or externally using the Compaq ProLiant Storage System.
Smart Array-4200 - The physical drives can be located inside the system or externally in a Compaq ProLiant Storage System that is connected to the system by a cable.
Smart Array-4250ES - The physical drives are located inside the system.
Smart Array 431 - The physical drives can be located inside the system or externally in a Compaq ProLiant Storage System that is connected to the system by a cable.
Integrated Smart Array - The physical drives can be located inside the system or externally in a Compaq ProLiant Storage System that is connected to the system by a cable.
Smart Array 5300 - The physical drives can be located inside the system or externally in a Compaq ProLiant Storage System that is connected to the system by a cable.
Smart Array 5i - The physical drives can be located inside the system or externally in a Compaq ProLiant Storage System that is connected to the system by a cable.
Smart Array 532 - The physical drives can be located inside the system or externally in a Compaq ProLiant Storage System that is connected to the system by a cable.
RAID LC2 - The physical drives are located inside the system.
Unknown - You may need to upgrade your driver software or Storage Agents. You have a drive array controller in the system that the Storage Agents do not recognize.
Controller Status displays the Compaq Array Controller's board status. The following values are valid:
OK - The array controller is operating properly.
General Failure - The array controller has failed.
Cable Problem - The array controller has a cable problem. Please check all cables to the controller.
Powered Off - The array controller does not have power. Please replace the controller and restore power to the controller's slot.
Unknown - Indicates that the Storage Agents are unable to determine the status of the controller. You may need to upgrade the Storage Agents.
Current Role displays the Compaq Array Controller current role for duplexed array controllers. The following values are valid:
Not Duplexed - This array controller is not duplexed.
Active - This duplexed array controller is the active controller.
Backup - This duplexed array controller is the backup controller.
Unknown - Indicates that the Storage Agents are unable to determine the role of the controller. You may need to upgrade the Storage Agents.
Redundancy Mode displays the redundancy type for the controller. The following values are valid:
Not Redundant - This array controller is not in a redundant configuration.
Driver Duplexing - The array controller is using a controller duplexing algorithm implemented exclusively in the operating system driver.
Firmware Active/Standby - The array controller is using an active/standby algorithm implemented in the controller firmware and the operating system driver.
Firmware Primary/Secondary - The array controller is using a primary/secondary algorithm implemented in the controller firmware and the operating system driver.
Unknown - Indicates that the Storage Agents cannot to determine the redundancy type for the controller. You may need to upgrade the Storage Agents.
Redundancy Error displays the redundancy error for the controller. The following values are valid:
No Failure - No failures have been detected.
No Redundant Controller - No redundant controller is installed.
Different Hardware - The other controller indicates a different hardware model.
No Link - A link to the other controller could not be established.
Different Firmware - The other controller indicates a different firmware version.
Different Cache - The other controller indicates a different cache size.
Other Cache Failure - The other controller indicates a cache failure.
No Drives - This controller cannot see any attached drives, but the other controller can.
Other No Drives - This controller can see the attached drives, but the other controller cannot.
Unsupported Drives - One or more attached drives has been determined to be incapable of properly supporting redundant controller operation.
Expand in Progress - An Expand operation is in progress. Redundant operation not supported until the expand operation is complete.
Unknown - Indicates that the Storage Agents are unable to determine the redundancy error for the controller. You may need to upgrade the Storage Agents.
Firmware Version lists the firmware version of the Compaq Array Controller. This value can be used to help identify a particular revision of the controller.
Product Revision displays the revision of the Compaq Array Controller board. This value can be used to help identify a particular revision of the controller.
Serial Number displays the serial number for the Compaq Array Controller. Use this number for identification purposes.
Processor Usage displays the total percentage of the processor usage, expressed as a number from 0 to 100 inclusive.
Command Count displays the total number of read and write commands processed in this sample. This value is expressed as read and write commands per second.
Command Latency displays the average command latency for this sample in 1/10,000 of a second units.
ADG Enabler Status displays the Compaq array controller RAID ADG Enabler Module status. The module enables advanced controller features such as Advanced Data Guarding. The following values are valid:
Not Supported - indicates that the RAID ADG Enabler Module is not supported by this type of controller.
Not Present - indicates that the RAID ADG Enabler Module is not present or is not accessible.
Fully Functional - indicates that the RAID ADG Enabler Module is functional and accessible.
Bad Signature - indicates that the RAID ADG Enabler Module has an incorrect signature.
Bad Checksum - indicates that the RAID ADG Enabler Module checksum failed.
Present - Upgrade Firmware - indicates that the RAID ADG Enabler Module is installed, but a firmware upgrade is required to make it fully functional.
Unknown - indicates that the Storage Agents do not recognize the RAID ADG Enabler Module. You may need to upgrade the Storage Agents.
Daughter Board Type displays the type of daughter board installed on the Compaq array controller. The following values are valid:
Not Supported - indicates that the array controller does not support daughter boards or it does not support daughter board identification.
Not Present - indicates that a daughter board is not installed on the array controller.
SCSI - indicates that a SCSI daughter board is installed on the array controller.
Fibre - indicates that a Fibre daughter board is installed on the array controller.
Unknown - indicates that the daughter board type is not recognized. You may need to upgrade the Storage Agents.
Select the accelerator item from the Mass Storage submenu to display the following information:
Status displays the status of the Compaq Array Accelerator. The following values are valid:
Enabled - Cache operations are currently configured and enabled for at least one logical drive.
Temporarily Disabled - Cache operations have been temporarily disabled. Check the Array Accelerator Error Code for the monitored item to determine why the cache operations have been temporarily disabled.
Permanently Disabled - Cache operations have been permanently disabled. Check the Array Accelerator Error Code for the monitored item to determine why the cache operations have been disabled.
Unavailable - An Array Accelerator has not been configured.
Unknown - The Storage Agents cannot determine the status of the Array Accelerator. You may need to upgrade the Storage Agents.
Bad Data indicates the possibility of data loss due to a battery problem when the system was powered on. The following values are valid:
Possible - At power-on, the battery pack was not sufficiently charged. Because the battery pack did not retain sufficient charge when the system resumed power, the Array Accelerator has not retained any data that may have been stored in the cache. If no data was in the cache, no data was lost. Several situations may have caused this condition:
If the system was without power for eight days, and the battery pack was on (the battery pack activates only if the system loses power unexpectedly), any data that may have been stored was lost.
There may be a problem with the battery pack. See the Battery Status monitored item for more information.
The Array Accelerator board has been replaced with a new board that has a discharged battery pack. No data has been lost in this case, and posted reads or writes will automatically be enabled when the battery pack reaches full charge.
None - No data loss occurred. At power up, the battery pack was properly charged.
Unknown - The Storage Agents do not recognize the status. You may need to update your software.
Battery Status displays the status of the battery pack on the Array Accelerator. The battery pack can recharge only when the system is powered on.
OK - The battery pack is fully charged.
Failed - The battery pack is below a sufficient voltage level and has not fully recharged within the maximum 36 hours. Your board should be serviced as soon as possible.
Recharging - The battery power is less than 75 percent. The Compaq Array Controller is attempting to recharge the battery pack. A battery pack can take 36 hours to fully recharge. After 36 hours, if the battery pack has not recharged, it is considered failed.
Degraded - The battery pack is still operating, but one of the batteries in the pack has failed to recharge properly. Your board should be serviced as soon as possible.
Not Present - The battery pack is not present. (Some controllers do not have a battery-backed cache.)
Unknown - The Storage Agents do not recognize the battery status. You may need to update your software.
Error Code displays the status of the cache operations. The following values are valid:
None - Cache operations are currently configured and enabled for at least one logical drive. No cache errors have occurred.
Bad Configuration - Cache operations are temporarily disabled. This error could be caused if the Array Accelerator was switched from one controller to another. Schedule maintenance time and run the Compaq System Configuration Utility again to ensure that the board has been properly configured for this system.
NOTE: If data from another system was stored on the board and you rerun System Configuration, the data will be lost.
Low Battery - Cache operations are temporarily disabled due to insufficient battery power. Check the Battery Status monitored item for more information.
Disable Command Issued - Cache operations are temporarily disabled. This condition should not exist when the system regains power.
No Resources - Cache operations are temporarily disabled. The controller does not have sufficient resources to perform cache operations. For example, when a replaced drive is being rebuilt, there will not be sufficient resources. Once the operation that requires the resources has completed, this condition will clear and cache operations will resume.
Not Connected - Cache operations are temporarily disabled. The Array Accelerator has been configured but is not currently attached to the controller. Check the alignment of the board and connections.
Bad Mirror Data - Cache operations have been permanently disabled. The Array Accelerator stores mirrored copies of all data. If data exists in the cache when the system is first powered up, the Array Accelerator performs a data compare test between the mirrored copies. If the data does not match, an error has occurred. Data may have been lost and the board may need servicing.
Read Failure - Cache operations have been permanently disabled. The Array Accelerator stores mirrored copies of all data. While reading the data, memory parity errors occurred so both copies were corrupted and cannot be retrieved. Data has been lost. Have the board serviced.
Write Failure - Cache operations have been permanently disabled. This error occurs when an unsuccessful attempt was made to write data to the Array Accelerator. Data could not be written to write cache memory in duplicate due to the detection of parity errors. This error does not indicate data loss. Have the board serviced.
Configuration Changed - Cache operations have been permanently disabled. The configuration of the logical drives has changed. Reconfigure the Array Accelerator with the Compaq System Configuration Utility.
Expand in Progress - Cache operations are temporarily disabled due to an expand of a logical drive. When the expand operation completes, the accelerator will be enabled.
Snapshot in Progress - Cache operations are temporarily disabled due to a snapshot operation that is queued up or in progress. When the snapshot operation completes, the accelerator will be enabled.
Redundant Low Battery - Cache operations are temporarily disabled. The redundant controller has insufficient cache battery power.
Redundant Size Mismatch - Cache operations are temporarily disabled. The cache sizes on the redundant controllers do not match.
Redundant Cache Failure - Cache operations are temporarily disabled. The cache on the redundant controller has failed.
Excessive ECC Errors - Cache operations have been permanently disabled. The number of cache lines experiencing excessive ECC errors has reached a preset limit.
ADG Enabler Missing - Indicates that write cache operations have been temporarily disabled. An advanced data guarding logical drive is configured but the RAID ADG Enabler Module is broken or missing.
Unknown - The Storage Agents do not recognize the error code. You may need to update your software.
Serial Number displays the serial number for the Compaq Array Accelerator. Use this number for identification purposes.
Total Memory displays the total amount of accelerator memory in megabytes, including both battery-backed and non-battery-backed memory.
Write Cache displays the amount of memory allocated for the write cache in Kbytes. Because data is kept in duplicate (mirrored), the actual amount of usable memory is half the amount shown. The write cache number matches the amount of memory shown at configuration.
Read Cache displays the amount of memory allocated for the read cache in Kbytes. Because data is kept in duplicate (mirrored), the actual amount of usable memory is half the amount shown.NOTE: Read cache is not available on IDA-2 or SCSI Managed Array Technology (SMART) controllers. Values for these controllers will be 0.
Write Errors displays the total number of write memory parity errors that were detected while writing to the Array Accelerator.
Write parity errors occur when the system detects that information has not been transferred to the Array Accelerator correctly. A parity bit is included for each byte of information stored in memory. When the microprocessor reads or writes data, the system counts the value of the bits in each byte. If the total does not match the system's expectations, a parity error has occurred.
Read Errors displays the total number of read memory parity errors that were detected while reading from the Array Accelerator. The mirrored copy of data in the write cache can be accessed to obtain correct data if a memory parity error occurs.
Memory parity errors occur when the system detects that information has not been transferred correctly. A parity bit is included for each byte of information stored in memory. When the microprocessor reads or writes data, the system counts the value of the bits in each byte. If the total does not match the system's expectations, a parity error has occurred. A bad memory chip, memory corruption, or lack of memory refresh may cause memory parity errors.
This section provides an overview of all disk drives attached to the controller. Each physical drive is listed as a separate entry in the Mass Storage submenu. The information displayed next to the physical drive includes the condition of the drive, the location of the drive (port and drive number) and drive size. Select any of the physical drives from the Mass Storage submenu to display more information about the drive. The following information displays:
Status indicates the status of the SCSI physical drive. The possible values are:
OK - The drive is functioning properly.
Failed - The drive is no longer operating and should be replaced.
Predictive Failure - The physical drive has a predictive failure error and should be replaced.
Unknown - The physical drive cannot be monitored at this time. This may be due to:
The device driver for this drive may have been unloaded.
The logical drive may have failed and been deactivated by the operating system. In this case, the last known status was OK.
The Storage Agents do not recognize the drive. You may need to upgrade your software.
Action displays the action that is required for this device. The following values are valid:
Replace Drive - Replace this drive. If the drive condition is Failed, check the Predictive Indicators, Problem Indicators, and Failure Indicators for a possible cause of the failure.
Replace SMART Drive - The SMART hard drive predicts imminent failure. Schedule replacement of the drive before an actual failure occurs.
No Action Required - The drive is operating normally and no action is required.
Capacity displays the size of the physical drive in megabytes. For example, 120 indicates that the physical drive is 120 megabytes.
Model displays a description of the physical drive. The text depends on the manufacturer of the drive and the drive type. For example, you might see: Compaq 210MB CP3201.
If a drive fails, note the model to identify the type of drive necessary for replacement.
Firmware Version displays the physical drive firmware version number. Make sure you have the most recent version of the firmware because older versions may not support all of the newest features.
Serial Number displays the serial number assigned to the SMART physical drive. This value is based on the serial number as returned by the SCSI inquiry command but may be modified due to space limitations. This item can be used for identification purposes.
Service Hours displays the current number of hours of service (the number of hours that a physical drive has been spinning) since the drive was stamped. The drive was stamped when it left the factory or when you ran Compaq Diagnostics on your new drive.
For example, if the Current Service Hours value is 604, the drive has been operating for 604 hours. If an error occurred at 499 Service Hours, it occurred after 499 hours of service.
SMART Support indicates whether or not the SCSI physical drive supports SMART. The possible values are:
Available - This drive supports predictive failure monitoring.
Not available - Predictive failure monitoring is not available for this drive.
Unknown - The Storage Agents cannot determine if the drive supports predictive failure monitoring. You may need to upgrade your driver or Storage Agents.
NOTE: A value of Unknown indicates that the agents cannot determine this information from the physical drive.
Current Width displays the Physical Drive Current Width. The following values are possible:
Narrow - The negotiated data transfer width for this drive is narrow (8 data bits).
Wide16 - The negotiated data transfer width for this drive is wide (16 data bits).
Unknown - The Storage Agents are unable to determine the current negotiated data transfer width for this drive.
Current Speed displays the Physical Drive Current Data Transfer Speed. The following values are possible:
Asynchronous - The negotiated data transfer speed for this drive is asynchronous.
Fast - The negotiated data transfer speed for this drive is 10 million transfers per second.
Ultra - The negotiated data transfer speed for this drive is 20 million transfers per second.
Ultra2 - The negotiated data transfer speed for this drive is 40 million transfers per second.
Ultra3 - The negotiated data transfer speed for this drive is 80 million transfers per second.
Unknown - The agent is unable to determine the current negotiated data transfer speed for this drive.
Placement indicates whether the physical drive is in an internal or external Compaq Storage System. The following values are valid:
Unknown - The physical drive is not in a Compaq Storage System or the Storage Agents cannot determine the drive placement.
Internal - The physical drive is in an internal Compaq Storage System.
External - The physical drive is in an external Compaq Storage System.
This symbol indicates that the drive is a hot plug drive.
NOTE: The Compaq Drive Array Management Agent can provide full information only on physical drives that have been properly initialized and are a part of a Compaq Drive Array. All drives currently shipped with Compaq systems have been initialized at the factory. However, if one of the drives has been replaced due to a hardware failure, or your system was purchased before this service was provided, the drives may not be initialized. A non-initialized drive cannot show drive information.
If you have uninitialized drives, use the Compaq Diagnostic utility to update the system configuration to supply enhanced physical drive information. To initialize a physical drive to provide monitoring information:
Power down the system.
Insert the Compaq Diagnostics diskette into the diskette drive of the managed system.
Restart the managed system.
At the main program menu, select Test Computer.
At the next menu, select View Device List.
Compaq Diagnostics will initialize all physical drives attached to Compaq Drive Arrays.
Select the length of time to blink the physical drive's LEDs from the drop-down list box and then select the Start button. The page will automatically refresh and display an image of a blinking drive and a Stop button. Select the Stop button to end blinking before the time expires.
After the drive lights stop blinking the page will have to be manually refreshed to display the Start button. There may be a delay, depending of the length of the Compaq Management Agents data collection interval, after the drive lights stop blinking and before the Start button can be displayed.
Only drives in hot plug trays are supported since the LEDs are part of the tray. Only one drive on a selected controller may be identified at a time. If a different drive is selected while another drive is currently blinking then the other drive will stop blinking and the selected drive will blink.
IMPORTANT: The Start or Stop button will only be displayed if you are logged on as an administrator or an operator, SNMP Sets are enabled, and a SNMP Community string has been defined with 'write' access. Go back to the Summary page and select login to login as an administrator or operator. SNMP Sets can be enabled in the Compaq Management Agents for Servers control panel applet on the SNMP Settings page. A SNMP Community string with 'write' access can be defined in the SNMP Service Properties Security page located in Computer Management under Services.
Select one of the listed logical drives to see more information about the drive.
Use the Predictive Indicators to predict when a drive, which is now operating normally, may need to be replaced.
SMART Status displays the SMART status as reported by the physical drive. This is only displayed if the drive supports SMART predictive failure. The possible values are:
Other - The Storage Agent is unable to determine the status of SMART predictive failure monitoring for this drive.
OK - Indicates the drive is functioning properly.
Replace Drive - Indicates that the drive has a SMART predictive failure error and should be replaced.
The predictive indicators listed below will not be displayed if the physical drive does not support any of the indicators and SMART status is available.
The numerical data associated with these items displays after the item name. For example, Used Realloc: 122 means that there are 122 used reallocation sectors for this drive. The status of these items can be OK or Replace Drive. If the status is Replace Drive, replace the drive, or an actual drive failure may occur in the future. The Predictive Indicators are:
Functional Test 1, 2, and 3 provides information about a series of tests that indicates how well a physical drive works. The Status of these items can be OK or Replace Drive. If the status is Replace Drive, replace the drive, or an actual drive failure may occur in the future.
These tests compare the way the physical drive currently operates when performing various tasks with the way it worked when it was new.
Used Realloc displays the number of sectors of the reallocation area that have been used by the physical drive. The Status of this item can be OK or Replace Drive. If the status is Replace Drive, replace the drive, or an actual drive failure may occur in the future.
Because of the nature of magnetic disks, certain sectors on a drive may have media defects. The reallocation area is part of the drive that the drive manufacturer sets aside to compensate for these defects. The array controller writes information addressed from the unusable sectors to available sectors in the reallocation area. If too many sectors have been reallocated, there may be a problem with the drive.
Spinup Time displays the time it takes for a physical drive to spin up to full speed. The Status of this item can be OK or Replace Drive. If the status is Replace Drive, replace the drive, or an actual drive failure may occur in the future.
Drives require time to gain momentum and reach operating speed. As cars are tested to go from 0 mph to 60 mph in X number of seconds, drive manufacturers have preset expectations for the time it takes the drive to spin to full speed. Drives that do not meet these expectations may have problems.
The spinup time value is shown in tenths of a second. Thus, if the drive takes 12 seconds to spin up, the value would be 120. The value may be 0 for this monitored item under one of the following conditions:
You are monitoring a physical drive that is part of the managed system's internal drive array storage, and you use a warm boot to reset the monitored system. During a warm boot, the drives continue to spin.
You have a Compaq Drive Array but have a version of the physical controller ROM that is less than version 1.00. If you have used an upgrade utility on versions less than 1.00, the value may still be 0.
You are monitoring a physical drive in a Compaq ProLiant Storage System or an Intelligent Array Expansion System and you reset the managed system but not the ProLiant or Intelligent Array Expansion System.
The physical drive may be configured to start up immediately when the system is powered on, instead of waiting for the controller to start it.
Use the Problem Indicators to determine when a drive failure has occurred that may be correctable without replacing the drive. The Problem Indicators are:
Fail Recov Reads shows the number of read errors that occurred while Automatic Data Recovery was being performed from this physical drive to another drive. If a read error occurs, Automatic Data Recovery stops.
If Automatic Data Recovery stops repeatedly and this counter is incremented on a drive in the recovering volume, you may be able to correct the problem. Follow the steps below:
CAUTION: Do not replace this drive without first performing the following steps or data loss will occur.
Back up the system data, if possible. Otherwise, revert to a previous backup.
Run Compaq Diagnostics 8.18 or later on the drive exhibiting these errors. Perform a Surface Analysis by following these steps:
Insert the Diagnostics diskette into the diskette drive. Reboot the system.
Select Computer Checkup (Test) at the first menu.
At the Main Diagnostics menu, select Prompted Diagnostics.
At the Test Options screen, select Interactive Testing (Single Device).
At the Device Selection menu, select Fixed Disk.
At the Fixed Disk Test Selection menu, select the Format menu. If more than one drive is available, select the drive you wish to test.
At the Format menu, select Surface Analysis. This test remaps any bad sectors and indicates further problems with the drive, if any.
Restore data from the backup.
If these errors repeat, replace the drive.
Other Timeouts shows the number of times the drive did not respond with an interrupt within a controller-defined period of time after a command had been issued. This monitored item does not include Data Request (DRQ) timeouts.
If the other timeouts count is not zero and the drive has failed, you may be able to correct the problem without replacing the drive. Follow the steps below:
Ensure that all system and storage system cables are intact and seated properly. You may need to replace the cables.
Ensure that a Compaq ProLiant Storage System is plugged in and powered on. Make sure the power supply is functioning.
IMPORTANT: Never turn off a ProLiant Storage System when the attached system is still turned on.
Check the physical proximity of the system to other electrical devices. Since electrical noise may cause this error, check the AC circuit for other electrical devices.
For Compaq IDA systems, contact your local Compaq Service Provider to verify that the COMPAQ IDA Controller is at a minimum revision level. Refer the provider to Service Bulletin 102A.
Timeouts can be caused when two or more drives are set to the same SCSI ID. Ensure that the ProLiant and system SCSI IDs do not conflict.
On a Compaq ProLiant Storage System, check the SCSI ID cable on the drive tray. If the cable is damaged or incorrectly installed, SCSI Timeouts can occur. See the documentation accompanying the Hot Plug Drive Tray Service Spare Kit.
Ensure that the system temperature is within specified limits. Ensure that the fans are operating and are not blocked.
In some instances, drive failure can cause Timeouts. If you continue to receive many of these errors, replace the drive.
You can reset Other Timeouts using Compaq Diagnostics. Follow these steps for Compaq Diagnostics 8.19 or later:
Reboot the system with the Compaq Diagnostics diskette in drive A.
Press Enter at the Welcome screen.
At the Main menu, select (Computer Checkup) Test.
Select Continue at the Note: screen.
Select Prompted Diagnostics at the next screen. Select Continue at any Warning panels that may display.
At the Test Options screen, select Interactive Testing (single device).
At the Device Selection menu, select the type of drive that indicated Other Timeouts.
At the Test Selection menu, select Drive Monitoring Diagnostics Test.
If the next screen offers you a choice of logical drives, select the logical drive associated with the physical drive indicating Other Timeouts or select Test All Drives.
Diagnostics will display the 1736-22 error if Other Timeouts are discovered. Press Enter.
Select Yes at the next screen to reset Other Timeouts.
SCSI Bus Faults displays the number of times that SCSI bus parity, overrun, or underrun errors have been detected on the SCSI bus. Since the controller will retry the operation, SCSI bus faults can cause a drop in performance, or, in some cases, data corruption.
If the count is not zero and the drive has failed, you may be able to correct the problem without replacing the drive. Follow the steps below:
Ensure that all system and storage system cables are intact and seated properly. You may need to replace the cables.
Check the physical proximity of the system to other electrical devices. Since electrical noise may cause a Bus Fault error, check the AC circuit for other electrical devices.
Ensure that the system temperature is within specified limits. Ensure that fans are operating and are not blocked.
SCSI Bus Faults can be caused when two or more drives are set to the same SCSI ID. Ensure that ProLiant and system SCSI IDs do not conflict.
In some instances, drive failure can cause SCSI Bus Faults. If you continue to receive many of these errors, replace the drive.
IRQ Deglitch displays the number of times that a glitch has been detected on the drive interface cable. Since the controller will retry the operation, glitches can cause a drop in performance or, in some cases, data corruption. Glitches indicate electrical noise on the drive cable or an intermittent failure of the drive electronics.
On Compaq IDA and IDA-2 systems, this item is considered a Problem Indicator that may be correctable without replacing the drive. If this counter is not zero and the drive has failed, follow the steps below:
Ensure that all system and storage system cables are intact and seated properly. You may need to replace cables.
Check the physical proximity of the system to other electrical devices. Since electrical noise may cause a glitch error, check the AC circuit for other electrical devices.
For Compaq IDA systems, contact your local Compaq Service Provider to verify that the Compaq IDA Controller is at a minimum revision level. Refer the provider to Service Bulletin 102A.
If you continue to receive many of these errors, replace the drive.
NOTE: If the drive has not failed, the above counts simply provide a cumulative record of past errors that have been corrected.
Use the Failure Indicators to determine the cause of a drive failure. Typically, the number of failures is zero when the drive is operating normally. If a counter is not zero and the drive has not failed, there could be an intermittent problem that may require the drive to be replaced. The Failure Indicators are:
Spinup Errors - When the physical drive fails due to the failure of a spin-up command, a Spinup Error occurs. If the failure count is not zero and the drive has failed, replace the drive.
If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
Aborted Commands - The Aborted Commands counter records the number of times that a physical SCSI drive returned an Aborted Command status when a SCSI command was attempted. This error count indicates unsuccessful termination of the SCSI command. When the physical drive is failed due to aborted commands that could not be retried successfully, Aborted Commands errors occur. If the number of errors is not zero and the drive has failed, replace the drive.
If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
Reallocation Aborts - When the physical drive is failed due to an error that occurred when the controller was trying to reallocate a bad sector, a Reallocation Abort error occurs.
Because of the nature of magnetic disks, certain sectors on a drive may have media defects. The reallocation area part of the drive is set aside to compensate for these defects. The array controller writes information addressed from unusable sectors to available sectors in the reallocation area.
If the number of reallocation abort errors is not zero and the drive has failed, replace the drive. If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
Media Failures - When this physical drive fails due to unrecoverable media errors, a Media Failure occurs.
If the number of media failure errors is not zero and the drive has failed, replace the drive. If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
Format Errors - When a format operation fails because the controller was unable to remap a bad sector, a Format Error occurs.
If the number of format errors is not zero and the drive has failed, replace the drive. If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
Hardware Errors - The Hardware Errors counter records the number of times that a physical SCSI drive returned a Hardware Error status when a SCSI command was attempted. This error status indicates unsuccessful termination of the SCSI command. The controller typically retries this command several times before failing the drive.
If the number of hardware errors is not zero and the drive has failed, replace the drive. If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
Not Ready Errors - When a physical drive returns a not ready status when it should be ready, a Drive Not Ready Error occurs. This error could occur if a drive spins down unexpectedly or if the drive never becomes ready after the spin up command is issued.
If the number of not ready errors is not zero and the drive has failed, replace the drive. If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
Bad Target Errors - When a physical drive performs an action that does not conform to the SCSI-2 port protocol, the SCSI port is reset.
If the number of bad target errors is not zero and the drive has failed, replace the drive. If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
Fail Recov Writes - indicates whether write errors occurred while Automatic Data Recovery was being performed to this physical drive. If a write error occurs, Automatic Data Recovery stops. These errors indicate that the physical drive has failed.
If the number of fail recov writes is not zero and the drive has failed, replace the drive. If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
Self-Test Errors - indicates if a physical drive failed its self test. The physical drive does a self test each time the system is turned on.
If the number of self-test errors is not zero and the drive has failed, replace the drive. If the counter is not zero and the drive is OK (has not failed), there may be an intermittent problem that requires drive replacement. If you observe that the count is increasing over time, replace the drive.
The above information is available for those drives that have been stamped with monitoring and performance data enabled. The drive was stamped when it left the factory or when you ran Compaq Diagnostics on your new drive.
This section displays statistics about a specific drive array controller physical drive. You can use the run-time statistics to monitor the health of a specific drive. The following information displays:
Sectors Read shows the total number of sectors read from the physical drive since the drive was stamped. The drive was stamped when it left the factory or when you ran Compaq Diagnostics on your new drive.
Hard Read Errors displays the number of read errors that could not be recovered by a physical drive's Error Correction Code (ECC) algorithm or through retries. Over time, a drive may produce these errors. If you receive these errors, a problem may exist with your drive.
The severity of these errors depends on whether the managed system is running in a fault tolerant mode. With fault tolerance, the controller can remap data to eliminate the problems caused by these errors.
Recovered Read Errors displays the number of read errors corrected through physical drive retries. Over time, all drives produce these errors. If you notice a rapid increase in the value for Recovered Read Errors or Hard Read Errors, a problem may exist with the drive. Expect more errors for this monitored item than for Hard Read Errors.
Total Seeks displays the total number of seek operations during seek tests performed by the physical drive since the drive was stamped. The drive was stamped when it left the factory or when you ran Compaq Diagnostics on your new drive.
During normal reads and writes to the drive, the drive does implied seeks to the location where data resides. These are not included in this count.
Seek Errors displays the number of seek errors that a physical drive detects. A seek error is a seek that failed. Over time, a drive usually produces these errors. If you notice a rapid increase in the value shown for Seek Errors, this physical drive may be failing. Only an unusually rapid increase in these errors indicates a problem.
Sectors Written displays the total number of sectors written to the physical drive since the drive was stamped. The drive was stamped when it left the factory or when you ran Compaq Diagnostics on your new drive.
Hard Write Errors displays the number of write errors that could not be recovered by a physical drive. Over time, a drive may produce these errors. If you notice an increase in the value shown for Hard Write Errors or Recovered Write Errors, a problem may exist with the drive. The counter value increases every time the physical drive detects another error. On average, these errors should occur less frequently than read errors.
Recovered Write Errors displays the number of write errors corrected through physical drive retries or recovered by a physical drive on a monitored system. Over time, a drive may produce these errors. If you notice an increase in the value shown for Recovered Write Errors or Hard Write Errors, a problem may exist with the drive.
The Recovered Write Errors value increases every time the physical drive detects and corrects an error. Only an unusually rapid increase in these errors indicates a problem. On average, these errors should occur less frequently than read errors.
Hot-Plug Count indicates the number of times this physical drive was removed via a hot-plug event from a Compaq ProLiant Storage System since the drive was stamped. The drive was stamped when it left the factory or when you ran Compaq Diagnostics on your new drive.
DRQ Timeouts displays the number of times that a physical drive continued to request data but did not get a command completion. This value increases every time a Data Request (DRQ) timeout occurs for the physical drive.
A defective drive or cable may cause DRQ timeouts to occur. If you see an increase in these errors, ensure that the cables connecting the drive are intact.
A list of logical drives associated with the controller displays in the Mass Storage submenu. Each logical drive in the list displays the condition, logical drive number and the fault tolerance of that logical drive. Select one of the logical drive entries to display the following information.
Status displays the status of the logical drive. The logical drive can be in one of the following states:
OK - Indicates that the logical drive is in normal operation mode.
Failed - Indicates that more physical drives have failed than the fault tolerance mode of the logical drive can handle without data loss.
Unconfigured - Indicates that the logical drive is not configured.
Interim recovery - Indicates that the logical drive is using Interim Recovery Mode. In Interim Recovery Mode, at least one physical drive has failed, but the logical drive's fault tolerance mode lets the drive continue to operate with no data loss.
Ready rebuild - Indicates that the logical drive is ready for Automatic Data Recovery. The physical drive that failed has been replaced, but the logical drive is still operating in Interim Recovery Mode.
Rebuilding - Indicates that the logical drive is currently doing Automatic Data Recovery. During Automatic Data Recovery, fault tolerance algorithms restore data to the replacement drive.
Wrong drive - Indicates that the wrong physical drive was replaced after a physical drive failure.
Bad connect - Indicates that a physical drive is not responding.
Overheating - Indicates that the drive array enclosure that contains the logical drive is overheating. The drive array is still functioning, but should be shutdown.
Shutdown - Indicates that the drive array enclosure that contains the logical drive has overheated. The logical drive is no longer functioning.
Expanding - Indicates that the logical drive is currently doing Automatic Data Expansion. During Automatic Data Expansion, fault tolerance algorithms redistribute logical drive data to the newly added physical drive.
Not available - Indicates that the logical drive is currently unavailable. If a logical drive is expanding and the new configuration frees additional disk space, this free space can be configured into another logical volume. If this is done, the new volume will be set to not available.
Queued for expansion - Indicates that the logical drive is ready for Automatic Data Expansion. The logical drive is in the queue for expansion.
Unknown - You may need to upgrade your software.
Fault Tolerance displays the fault tolerance mode of the logical drive. To change the fault tolerance mode, run the Compaq System Configuration Utility.
The following values are valid for the Logical Drive Fault Tolerance:
None - (RAID 0) fault tolerance is not enabled. If a physical drive reports an error, the data cannot be recovered by the Compaq Drive Array.
Mirroring - (RAID 1/RAID 0+1) is the highest level of fault tolerance. It is the only method offering fault tolerance protection if no more than two physical drives are selected. Drive mirroring creates fault tolerance by storing duplicate data on two drives. There must be an even number of drives. This is the most costly fault tolerance method because it requires 50 percent of the drive capacity to store the redundant data.
Data Guarding - (RAID 4) assures data reliability while using only a small percent of the logical drive storage capacity. A designated, single physical drive contains parity data. If a drive fails, the controller uses the data on the parity drive and the data on the remaining drives to reconstruct data from the failed drive. This allows the system to continue operating with slightly reduced performance until you replace the drive.
Distributed Data Guarding - (RAID 5) stores parity data across all the physical drives in the array and allows more simultaneous read operations and higher performance than data guarding (RAID 4). If a drive fails, the controller uses the parity data and the data on the remaining drives to reconstruct data from the failed drive. The system then continues operating with a slightly reduced performance until you replace the failed drive.
Advanced Data Guarding - (RAID ADG) is the fault tolerance method that provides the highest level of data protection. It stripes data and parity across all the physical drives in the configuration to ensure the uninterrupted availability of uncorrupted data. This fault-tolerance method is similar to RAID 5 in that parity data is distributed across all drives in the array, except in RAID ADG the capacity of multiple drives is used to store parity data. Assuming the capacity of 2 drives is used for parity data, this allows continued operation despite simultaneous failure of any 2 drives in the array, whereas RAID 4 and RAID 5 can only sustain failure of a single drive.
Unknown - You may need to upgrade your software.
Capacity displays the size of the logical drive in megabytes. For example, 120 indicates that the logical drive is 120 megabytes. Use this data to determine whether the drive will be large enough to accommodate your needs.
The capacity utility defines a megabyte as 1,048,576 bytes. The capacity value shown may differ from the stated size of the drive due to different definitions of a megabyte. Many hardware manufacturers use the value of 1,000,000 for megabyte instead of 1,048,576.
Percent Rebuild Complete displays the percent complete of the rebuild. When the value reaches 100, the rebuilding process is complete. The drive array continues to operate in interim recovery mode while a drive is rebuilding.
When a logical volume is expanding, the drive must redistribute the logical volume data across the physical drives. This value shows how many blocks of data still need to be redistributed. When the value reaches 100, the expand process is complete. The array continues to operate normally while the drive is expanding.
The Percent Rebuild Complete value is only valid if the Logical Drive Status is Rebuilding or Expanding.
Accelerator indicates whether the logical drive has an Array Accelerator board configured and enabled. The following values are valid:
Enabled - The Array Accelerator board is configured and enabled for this logical drive. Run the Compaq System Configuration Utility to change this value.
Disabled - The Array Accelerator board is configured but not enabled for this logical drive. Run the Compaq System Configuration Utility to change this value.
Unavailable - There is no Array Accelerator board configured for this logical drive.
Unknown - The Storage Agents do not recognize the Array Accelerator board. You may need to upgrade your software.
Stripe Size displays the size of a logical drive stripe in kilobytes.
Total Read and Write Requests displays the total number of read and write requests for the logical volume, expressed in reads and writes per second.
Reads displays the number of read requests for the logical volume, expressed in reads per second.
Writes displays the number of write requests for the logical volume, expressed in writes per second.
Sectors Read displays the number of sectors read for the logical volume for this interval. This value is expressed in sectors per second.
Sectors Written displays the number of sectors written for the logical volume for this interval. This value is expressed in sectors per second.
Select one of the listed physical drives to see more information about the drive.
This section provides additional information about the spare drive, including its status and the number of physical drives it is replacing, if any. This section is available only if a spare drive is configured for the selected logical drive. The following information is available.
Status displays the status of the on-line spare drive. The following values are possible:
Building - A physical drive has failed. Automatic Data Recovery is in progress to recover data to the on-line spare.
Active - A physical drive has failed. Automatic Data Recovery is complete. The system is using the on-line spare as a replacement for the failed drive.
Failed - The on-line spare has failed and is no longer available for use.
Inactive - The monitored system has an on-line spare configured, but is not currently in use.
Unknown - You may need to upgrade your software.
Spare Drive ID indicates which physical drive functions as a spare. This value represents the physical drive ID. If you have a SCSI Managed Array Technology (SMART or SMART-2) Controller installed, this item will show the port that the spare is attached to, followed by the physical drive ID.
Replaced Drive ID identifies a failed physical drive by its drive ID number. If one of the physical drives has failed and the spare drive is now operating in place of the failed drive. For the SCSI Managed Array Technology (SMART or SMART-2) Controller, the port number of the replaced drive displays, followed by the drive ID number.
Use this monitored item to identify the failed drive and replace that drive as soon as possible.
If N/A displays, the spare has not begun operating in place of the failed drive.
Rebuild Percentage displays the percent complete of the rebuild. When the value reaches 100, the rebuilding process is complete. The drive array continues to operate in interim recovery mode while a drive is rebuilding.
When a logical volume is expanding, the drive must redistribute the logical volume data across the physical drives. This value shows how many blocks of data still need to be redistributed. When the value reaches 100, the expand process is complete. The array continues to operate normally while the drive is expanding.
This value is only valid if the Logical Drive Status is Rebuilding or Expanding.
Select the Tape Storage System Information entry from the Mass Storage submenu to display the following information.
Status displays the status of the tape storage system. The following values are valid:
OK - Indicates that the library is operating normally.
Degraded - Indicates the library has degraded in some manner.
Failed - Indicates the library has failed and can no longer return data. The library may need to be replaced.
Offline - Indicates the Storage Agents can no longer communicate with the library. This could be caused by a cabling problem or the library may be powered off.
Unknown - The state of the tape library cannot be determined. You may need to upgrade the Storage Agents.
Serial Number displays the unit serial number for the tape library. Use this value for identification purposes.
Door Status displays the status of the door. The following values are valid:
Not Supported - The door status is not supported by the device.
Closed - The door is closed.
Open - The door is open.
Unknown - The state of the tape library door cannot be determined. You may need to upgrade the Storage Agents.
Total Moves displays the number of tape moves for the library loader arm.
Model displays the model name of the tape library. Use this value for identification purposes.
Firmware Revision displays the firmware revision level of the tape library. The level can be used for identification purposes.
Service Hours displays the number of hours of operation for the library.
Last Known Error displays the last error returned by the tape library.
Select one of the listed associated tape drives to see more information about the drive.
Select one of the tape drive entries from the Mass Storage submenu to display the following information about that drive.
Status displays the status of the tape drive. The following values are valid:
OK - Indicates the tape drive is operating normally.
Degraded - Indicates the tape drive has degraded in some manner.
Failed - Indicates the tape drive has failed and can no longer return data. The tape drive may need to be replaced.
Offline - Indicates the Storage Agents can no longer communicate with the tape drive. This could be caused by a cabling problem or the tape drive may be powered off.
Missing - Was OK - Indicates that a tape drive that was located in a Compaq System and had a status of OK has been removed.
Missing - Was Offline - Indicates that a tape drive that was located in a Compaq system and had a status of offline has been removed.
Unknown - Indicates that the state of the tape drive cannot be determined. You may need to upgrade the Storage Agents.
Model displays the model name of the tape drive. Use this value for identification purposes.
Firmware Revision displays the firmware revision level of the tape drive. Use this value for identification purposes.
Serial Number displays the unit serial number for the tape drive. Use this value for identification purposes.NOTE: Not all tape devices support serial numbers.
Magazine Size displays the magazine size of the tape drive. For single tape devices, the magazine size will be 1.
Placement indicates whether the physical drive is in an internal or external Compaq Storage System. The following values are valid:
Unknown - The physical drive is not in a Compaq Storage System or the Storage Agents cannot determine the drive placement.
Internal - The physical drive is in an internal Compaq Storage System.
External - The physical drive is in an external Compaq Storage System.
This symbol indicates that the drive is a hot plug drive.
Tape Errors displays the total number of read and write errors encountered. This value is maintained from the moment the Tape Hardware Interface driver was loaded.
Tape errors may occasionally occur. If this value rises dramatically, clean the device. If you continue to have errors, you may have a problem. Some common causes of these errors include radio frequency interference (RFI) on the bus cables, bad or missing terminating resisters on the drives, or having more than one device with the same SCSI ID. Ensure the bus cable is free of obstructions and that the devices on the bus are properly configured.
Uncorrectable displays the total number of read and write errors which could not be corrected. This value is maintained from the moment the Tape Hardware Interface driver was loaded.
Uncorrectable errors may occasionally occur. If this value rises dramatically, clean the device. If you continue to have errors, you may have a problem. Some common causes include radio frequency interference (RFI) on the bus cables, bad or missing terminating resisters on the drives, or having more than one device with the same SCSI ID. Ensure the bus cable is free of obstructions and that the devices on the bus are properly configured.
Rereads displays the number of times blocks that had to be reread from the device. This value is maintained from the moment the Tape Hardware Interface driver was loaded.
Reread errors may occasionally occur. If this value rises dramatically, clean the device. If you continue to have rereads, you may have a problem. Some common causes include radio frequency interference (RFI) on the bus cables, bad or missing terminating resisters on the drives or having more than one device with the same SCSI ID. Ensure the bus cable is free of obstructions and that the devices on the bus are properly configured.
Rewrites displays the number of times blocks that had to be rewritten to the device. This value is maintained since the Tape Hardware Interface driver was loaded.
Rewrite errors may occasionally occur. If this value should rise dramatically, you may need to clean the device. If you continue to have rewrites, you may have a problem. Some common causes include radio frequency interference (RFI) on the bus cables, bad or missing terminating resisters on the drives, or having more than one device with the same SCSI ID. Ensure the bus cable is free of obstructions and that the devices on the bus are properly configured.
Tape Drive Heads Need Cleaning indicates whether the tape drive need to be cleaned. To clean the tape heads, insert a cleaning tape into the drive and run through a cleaning cycle. The following values are valid:
True - The tape drive requires a cleaning tape session in order to clean the heads.
False - The tape drive does not require any cleaning tape session.
Unknown - The tape drive does not support monitoring of the cleaning required status.
Cleaning Tape Needs Replacement indicates whether the cleaning tape that is inserted in an autoloader needs to be replaced because its cleaning capability is exhausted (it is at the end of the tape). This variable can be in one of the following states:
True - The autoloader tape drive requires a new cleaning tape to be inserted.
False - The tape drive does not require a new cleaning tape.
Unknown - The tape drive does not support monitoring of the cleaning tape replacement status.
NOTE: This variable is only applicable to autoloader tape drives.
Select a storage system item from the Mass Storage list to display the following information about Compaq ProLiant Storage Systems:
Box Type displays the type of drive enclosure, or box. The following types are possible:
External Storage System - Outside the machine
Internal Storage System - Inside the machine
Unknown - The Storage Agents do not recognize the drive enclosure. You may need to upgrade your software.
Vendor displays the name of the vendor that produces this drive enclosure, or box type, such as Compaq. Use this information for identification purposes.
Firmware Revision displays the firmware revision of the drive enclosure or box. Use this information for identification purposes.
Serial Number displays the serial number of the drive enclosure or box. Use this information for identification purposes.
Fan Status displays the status of the fan subsystem in the drive enclosure, or box. The following values are possible:
OK - The fan subsystem is working properly.
Failed - A fan has failed and there are not enough fans in the fan subsystem to keep the enclosure cool. Check your fan subsystem as soon as possible. Continued operation may cause failure of the drives.
Degraded - A fan has failed but there are still enough fans in the fan subsystem to keep the enclosure cool.
Unknown - The Storage Agents do not recognize the status of the fan subsystem. You may need to upgrade your software.
No Fan - This ProLiant device does not have a fan.
Drive Bays displays the number of drive bays provided by this storage system. If duplexing hardware is used with the storage system, the drive bay number is less than the number of physical drive bays in the enclosure.
Model displays the model of the storage system. Use this information for identification purposes.
Board Revision displays the board revision level of this storage system backplane.
Thermal Status displays the temperature status of the drive system. The following values are possible:
OK - The temperature is within normal operating range.
Degraded - The temperature is outside of normal operating range. Check to make sure the cover is on the ProLiant Storage System.
Failed - The temperature is outside of normal operating range, and could permanently damage the system. Ensure that the fans are spinning, and check the room temperature.
Unknown - The Storage Agents do not recognize the thermal status. You may need to upgrade your software.
No Temperature - This ProLiant does not support temperature monitoring.
Side Panel displays the status of the side panel of the drive enclosure, or box. The following values are possible:
In Place - The side panel is closed.
Removed - The side panel is not in place or not completely closed.
Unknown - The Storage Agents do not recognize the side panel status. You may need to upgrade your software.
No Panel Detection - This ProLiant Storage System does not support side panel detection.
Duplex Option displays the duplex option installed in this storage system. The following values are possible:
Duplex Top - This storage system is the top part of a duplexed unit.
Duplex Bottom - This storage system is the bottom part of a duplexed unit.
None - A duplex option is not installed.
Redundant Power Supply Condition displays the status of the Redundant Power supply. The following values are possible:
OK - All component power supplies that make up the redundant power supply are in normal working order.
Degraded - One of the component power supplies that make up the redundant power supply has failed. The drive system (either a drive subsystem or a power supply for the main unit) continues to operate; however, if the remaining power supply should fail, the drive system will lose all power and data loss could occur. To correct this situation, schedule a time to bring the device down and replace the failed power supply.
Unknown - The Storage Agents do not recognize the redundant power supply. You may need to upgrade your software.
No Redundant Power Supply - This ProLiant server does not support a redundant power supply.