Compaq Drive Array Controllers

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


Array Controller 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:

Controller Status displays the Compaq Array Controller's board status. The following values are valid:

Current Role displays the Compaq Array Controller current role for duplexed array controllers. The following values are valid:

Redundancy Mode displays the redundancy type for the controller. The following values are valid:

Redundancy Error displays the redundancy error for the controller. The following values are valid:

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:

Daughter Board Type displays the type of daughter board installed on the Compaq array controller. The following values are valid:


Array Accelerator Information

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:

Bad Data indicates the possibility of data loss due to a battery problem when the system was powered on. The following values are valid:

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.

Error Code displays the status of the cache operations. The following values are valid:

NOTE: If data from another system was stored on the board and you rerun System Configuration, the data will be lost.

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.


Physical Drive Information

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:

Action displays the action that is required for this device. The following values are valid:

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:

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:

Current Speed displays the Physical Drive Current Data Transfer Speed. The following values are possible:

Placement indicates whether the physical drive is in an internal or external Compaq Storage System. The following values are valid:

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:

  1. Power down the system.

  2. Insert the Compaq Diagnostics diskette into the diskette drive of the managed system.

  3. Restart the managed system.

  4. At the main program menu, select Test Computer.

  5. At the next menu, select View Device List.

Compaq Diagnostics will initialize all physical drives attached to Compaq Drive Arrays.

Identify Drive

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.


Logical Drive Information

Select one of the listed logical drives to see more information about the drive.

Predictive Indicators

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:

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:

Problem Indicators

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.

  1. Back up the system data, if possible. Otherwise, revert to a previous backup.

  2. Run Compaq Diagnostics 8.18 or later on the drive exhibiting these errors. Perform a Surface Analysis by following these steps:

    1. Insert the Diagnostics diskette into the diskette drive. Reboot the system.

    2. Select Computer Checkup (Test) at the first menu.

    3. At the Main Diagnostics menu, select Prompted Diagnostics.

    4. At the Test Options screen, select Interactive Testing (Single Device).

    5. At the Device Selection menu, select Fixed Disk.

    6. 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.

    7. At the Format menu, select Surface Analysis. This test remaps any bad sectors and indicates further problems with the drive, if any.

  3. Restore data from the backup.

  4. 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:

  1. Ensure that all system and storage system cables are intact and seated properly. You may need to replace the cables.

  2. 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.

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. Ensure that the system temperature is within specified limits. Ensure that the fans are operating and are not blocked.

  6. 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:

  1. Reboot the system with the Compaq Diagnostics diskette in drive A.

  2. Press Enter at the Welcome screen.

  3. At the Main menu, select (Computer Checkup) Test.

  4. Select Continue at the Note: screen.

  5. Select Prompted Diagnostics at the next screen. Select Continue at any Warning panels that may display.

  6. At the Test Options screen, select Interactive Testing (single device).

  7. At the Device Selection menu, select the type of drive that indicated Other Timeouts.

  8. At the Test Selection menu, select Drive Monitoring Diagnostics Test.

  9. 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.

  10. Diagnostics will display the 1736-22 error if Other Timeouts are discovered. Press Enter.

  11. 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:

  1. Ensure that all system and storage system cables are intact and seated properly. You may need to replace the cables.

  2. 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.

  3. Ensure that the system temperature is within specified limits. Ensure that fans are operating and are not blocked.

  4. 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.

  5. 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:

  1. Ensure that all system and storage system cables are intact and seated properly. You may need to replace cables.

  2. 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.

  3. 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.

  4. 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.

Failure Indicators

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:

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Statistics

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.


Logical Drive Information

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:

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:

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:

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.

Physical Drives

Select one of the listed physical drives to see more information about the drive.

Spare Drives

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:

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.


Tape Storage System Information

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:

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:

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.

Associated Tape Drives

Select one of the listed associated tape drives to see more information about the drive.


Tape Drive Information

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:

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:

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:

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:

NOTE: This variable is only applicable to autoloader tape drives.


Storage Systems

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:

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:

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:

Side Panel displays the status of the side panel of the drive enclosure, or box. The following values are possible:

Duplex Option displays the duplex option installed in this storage system. The following values are possible:

Redundant Power Supply Condition displays the status of the Redundant Power supply. The following values are possible: