Bad block indicated by windows in raid 5 array

Posted on 2009-04-28
Last Modified: 2012-05-06
I have an Exchange server with a 4 disk raid 5 array that windows is reporting has a bad block on virtual disk "E:"  The Raid manager is not showing any problems with any of the disks.  Is there a way to determine which disk in the array is hosting the bad block from the block number that windows gives?
I got the following informational event then the warning event.
Event ID: 30 Source: dmio     Description:  "dmio: Harddisk1 write error at block 51137447: status 0xc000000e"

Event ID: 37  Source: dmio     Description:  "dmio: Disk Harddisk1 block 51137447 (mountpoint E:): Uncorrectable write error"

Any help would be greatly appreciated.
Question by:nuke2computer
    LVL 87

    Accepted Solution

    This is normally not a disk error as the OS doesn't have any direct access to the disks, but rather a filesystem error. Enter chkdsk e: /x and say yes to the following Q. After that when you reboot the server the system will try to repair filesystem errors. This can take very long to finish, depending on the partition size and the amount and types of errors, during which the server isn't accessible, so do that during planned downtime and warn the users.

    Author Closing Comment

    Thanks for the answer.  I was up very late getting the Exchange Server back operating and did use this method after many other tries to get things working.  The bad block just happened to be with the data store.  When I did the chkdsk then went back to using eseutil I was able to get things stable and working again.
    Again Thanks for the help.  

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