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Replaced server motherboard, now SCSI Drives aren't recognized.

Posted on 2009-05-05
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Last Modified: 2013-11-09
Two days ago, we had a server go down on us. It was powered down for routine maintenance and afterward would not power back on.  After troubleshooting it was determined that the motherboard had fried.  We ordered a new motherboard and installed it.

The system now powers on but it is having problems recognizing our scsi drives. We have 6 hot swappable drives on a backplane. The drives on the array are separated into two logical drives. One RAID 0 (2 drives) and one RAID 5 (4 drives).

Here is the system information:
IBM eServer xSeries225 Model 8649
IBM ServeRAID-6i controller card
6 u320 SCSI drives
Operating System is Microsoft Server 2003 Standard with Exchange Server 2003 Std Installed

Upon boot the system gave us multiple problems, most of which were fixed by setting the system time

First time it booted after checking RAID config for the controller, got a warning: 6i controller FAILED one or more drives changed or missing.  

We rebooted the sytem rather than make any changes thaty could screw it up worse and the second time it booted it gave this warning
Controller OK Drives not detected, check cable or connectors

The system seems to alternate between these two errors almost randomly every time we try to boot it.

We are confident that the drives didn't get scrambled around.  Is there a configuration step we are missing because we put in a new motherboard?  Is there some way to boot from CD and display the config info from the drives and get it going?

Let us know if you smart people out there need more info to solve this problem.

Please help!!!!
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Question by:Hangulman
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dolomiti earned 125 total points
ID: 24308697
hi,
I believe that some HW issues have been done during re-mounting.
For what I remember, the 6i has not direct link to the disk back plane,
but it sees disks via motherboard
probably missing or bad wired cable between mother board and backplane

don't try to boot via Hard disk: boot by ServeRAD CD Supprt 6.11, don't use 7,
 and just when you'll see all disk in ServeRAID manager by CD, boot from disk.
bye
vic

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by:Hangulman
ID: 24327351
Looks like you were right! We did have a bad cable (a large chunk fell off the backplane connector when we removed it). Problems just keep on snowballing with this system!  

Anyways, just for information's sake if anyone else looks at this. After we reconnected the new cable and fired it up, the system detected the drives as "New Drives". The trick that needs to be done here on this IBM xSeries 225 was to press <CTRL + i > to load the mini-config program and then to select "copy configuration from drives to the controller"  This told the controller that the drives were not actually fresh drives and gave the controller all the RAID config info.

I use this site a lot for both personal and professional solutions. Thank you, dolomiti, and keep up the good work everyone!
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Author Closing Comment

by:Hangulman
ID: 31578178
I added one final comment to detail steps taken to get the system back up and running.
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