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Drive array dissapeared

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Gary Hymes
Occasional Visitor

Drive array dissapeared

An external 4214 is intalled on the DL360. A RAID 5 ARRAY (drive D:) completely vanished after a harddisk write error. What would cause the entire RAID 5 to fail (6 drives)? The hardware/cables/controller are okay.

The following error makes me think the hot spare was removed months ago - and then the drive error caused the MFT to become corrupt on the array. Does this make since? Would a RAID 5 survive an error if the hotspare was gone?

On the D volume: "dmio: Harddisk1 write error at block 71119807 due to disk removal"

The WRITE ERROR could not be corrected because the redundant drive was not available - causing this error; dmio: Disk Harddisk1 block 71119807 (mountpoint D:): Uncorrectable write error

An INFORMATION event, CPQCISSE, intermittently appeared in the event log, but the server still ran.
3 REPLIES
Mark Cloutier
Respected Contributor
Solution

Re: Drive array dissapeared

Dear Gary,
The RIS table on the hard drives might be a bit confused.
What do you see when you run the ACU?
Does it show extra logical drives?

Mark
We are here for a good time, not a long time!
Gary Hymes
Occasional Visitor

Re: Drive array dissapeared

Mark,

Please see the attached screen shots. Yes, there is an additional logical drive on the array in question that should not be there. There are six 18 GB drives on the raid 5 array.

It also shows it is still queued for parity initialization. What is the best remedy for this? Delete and then rebuild the array completely? This is our corporate sharepoint server and is very critical.

Thank you so much for your help!


Gary M. Hymes
DIGEX, INC
gary.hymes@digex.com




Mark Cloutier
Respected Contributor

Re: Drive array dissapeared

Hi Gary,
Since it is showing an additional drive that should not be there. What you can do is to shut down all. Unplug the SCSI cable for the 4214. When you boot back up please have the Smart Start cd in. Run the ACU. Now delete all of the logical drives that point to the 4214. There should be 2 that have a broken symbol on it. Save and exit. You don't have to worry about the data on the 4214 as it wasn't plugged in and keeps all the RAID info on the drives itself. Shut down and plug the 4214 back in. During POST it should say new logical drive found.

Please keep me posted on the results.

Mark
We are here for a good time, not a long time!