Frequent disk failures; cannot rebuild RAID array WAE-674
I have a number of WAE-674s at various remote sites. Since deployment around 6 months ago, I have had about 5 critical alarms for disk failures on different devices. On investigating, sometimes the alarm just disappears itself. On others, I have cleared it after a botched upgrade with the
Disk logical-shutdown / reload / disk recreate-raid
Procedure mentioned elsewhere on the forum. I have now upgraded all devices to 4.1.7 and made sure that all RAID controllers have the updated 15427 software.
Has anyone else had these frequent alarms?
I have one device showing the disk failure alarm, but on show disk details it looks ok to me:
diskfailedwae#show disk det
RAID Physical disk information:
disk00: OnlineJHWVD9YC286102 MB
disk01: OnlineJHWVEXLC286102 MB
disk02: OnlineJHWTZNKC286102 MB
disk03: Ready3LN73V6D140013 MB
disk04: Ready3LN73ZD6140013 MB
I have another device that may actually have a genuinely failed disk; having tried the disk recreate-raid command it states
Failed to remove RAID Logical drive. (1,2)
Controllers found: 1
A selected physical drive is not available for use.
Failed to create RAID Logical drive. (1,2)
Please, verify the disk does not contain mounted file system that remain in use.
Execute the command "(config)#disk logical shutdown" and reload the device before the array is recreated.
Is there a way to rebuild the array and get the device alive before I swap out the drive? Is there a way to self test disk units at all?
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