[SunHELP] Disk Mirroring and failover

[Bret Adams]

metastat command will give you the state of the disks. You can then use 
shell or perl to send out emails when a disk is down.

At 04:18 PM 5/11/2004, you wrote:
>Thanks for all of the responses so far.  One last question then.  If the
>system keeps running uninterrupted after a failed disk then how do you know
>you have a failed disk.  Is there some sort of notification built in to SDS
>?
>
>Thanks,
>
>Duke
>*******************************************
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>                       "Beaman, William 
> C" 
>
>                       <William.Beaman at cfs        To: 
> "'sunhelp at sunhelp.org'" <sunhelp at sunhelp.org>
>                       an.fda.gov>                cc: 
 >
>                       Sent by:                   Subject:  Re: [SunHELP] 
> Disk Mirroring and failover
>                       sunhelp-bounces at sun 
 >
>                       help.org 
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> 
>
>                       05/11/2004 03:43 
> PM 
>
>                       Please respond 
> to 
>
>                       "The SunHELP 
> List" 
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>Yo,
>
>Naw man, the mirror disk will kick in...not to worry...you don't have to
>reboot or anything...this stuff is for high availability, so it keeps
>running...depending on the system (if you have hot swap disks), you replace
>bad disk, resync, and drive on...even on OS disk...we been doing this for a
>few years...
>
>Bill
>
>Message: 12
>Date: Tue, 11 May 2004 15:20:50 -0400
>From: Bret Adams <bret at fabrikant.com>
>Subject: Re: [SunHELP] Disk Mirroring and failover
>To: The SunHELP List <sunhelp at sunhelp.org>
>Message-ID: <5.0.0.25.2.20040511151748.01a7eee8 at pop.fabrikant.com>
>Content-Type: text/plain; charset="us-ascii"; format=flowed
>
>I believe if the main drive fails, you would have to reboot into the ok
>prompt and then get the boot command to boot off of the second drive. Then
>replace the original drive and then rebuild the mirror.
>
>If the mirrored drive fails, you only have to hotswap a new drive in and
>rebuild the mirror.
>
>Bret
>
>At 02:13 PM 5/11/2004, you wrote:
> >Hello all,
> >
> >I'm reading up on using Solstice Disk Suite, but I do not seem to be able
> >to find the answer to one of my questions.  It concerns disk mirroring.
>In
> >our systems we run one hard drive that contains both the OS and our
> >applications.  If we were running SDS and mirrored this drive then would
> >our systems just keep running if there was a drive failure ?  Or does
>there
> >have to be some sort of manual intervention to switch the mirrored disk to
> >now run as the active/primary disk ?
> >
> >Thanks for any assistance,
> >
> >Duke
> >*************************************
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>End of SunHELP Digest, Vol 17, Issue 3
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