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Hardware Thread, Dell Raid problem in Technical; Hi When I was leaving today we had a problem with a Dell 2900 server. The partition using the raid ...
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    FN-GM's Avatar
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    Dell Raid problem

    Hi

    When I was leaving today we had a problem with a Dell 2900 server. The partition using the raid 5 has gone. All the student home folders plus a shred area. According to the device manager the disks need initializing but it fails to do so. The dell diagnostics show no hardware problems.

    What do I do now?

    Thanks

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    FN-GM's Avatar
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    Just going to bump this as i have to deal with this tomorrow.

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    SYNACK's Avatar
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    Does the raid controller have a separate bit of configuration software or its own diagnostic program. You may find some answers in these, also have you visually checked the drives to make sure that they are not reporting an error state on their caddies?

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    Quote Originally Posted by FN-Greatermanchester View Post
    Hi

    When I was leaving today we had a problem with a Dell 2900 server. The partition using the raid 5 has gone. All the student home folders plus a shred area. According to the device manager the disks need initializing but it fails to do so. The dell diagnostics show no hardware problems.

    What do I do now?

    Thanks
    have you booted into the RAID bios of the PERC daughter card, to check the status of the disks ? and which perc card are you using

    As synack has said look at the lights on the disks and reference them to the manual as to the state the disks are in..

    Also openmanage is the best tool for checking the diagnostics of the RAID...when you say device manager are you referring to the PERC BIOS/configuration utility or openmanage for server administration...
    you shoud be diagnosing using openmanager server administrator

    I think you might have to prepare for the worst if the RAID group requires a rebuild but the rebuild cannot be done....in which you'll have to restore from tape first thing on monday. That's obviously a worst case scenario. Normally dell servers are pretty good at picking up and alerting of disk failures...on an old adaptec server with 5 disks we had one disk fail which wasn't picked up, when a second disk failed later that was picked up but the controler couldn't be rebuild because there was infact 2 failed disks, the original failed disk was picked up on removal and reinsertion....crap adaptec scsi card

    Which perc card are you using ?
    Last edited by torledo; 11th May 2008 at 11:41 AM.

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    Hi thanks for the comments,

    The Diagnostics show up with no problems with either raid card or hard disk's. I haven't booted into the BIOS as the work i have been doing is remotely.

    Again so visual inspection as i have done all work so far remotely.

    Z

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    Which version of the Dell Disk Management MMC snapin are you using (if any?), does it correspond to what the web interface displays?

    Can you mount the volume outside of windows? BartPE or a boot image from a WDS server should give you diskpart which would allow you to investigate further.

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    The problem is fixed now. For some reason the server saw two of the hard drives as foreign ones. It wouldn’t import the new drives either. We had to clear all the virtual arrays (we had two one on raid 1 and the other with raid 5) once you did that you could import the other disks. Then re-created the virtual arrays and job was a good one, no loss of data thank god.



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