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will not boot up, hard disk, hdd, controller, Hard Drives

The Controller dosn't detect the forth SCSI Hard...

posted by ghorbanian on Feb 12, 2008

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Hi
I have a Intel Server Board SE7501BR2 Mainboard with AIC-7901 Controller.
I had two scsi hard and I wanted to add two more . but when the computer is boot up with two more SCSI( 4 Hdd) the SCSI Controller dosen't detect forth Hdd disk. when I disconnect one of Hdd then Controller detects 3 Hard and I don't have any problem.
Dose anyone has some idea about this problem.
Thank you for your notes.

Best regards
Fariba ghorbanian
f_ghorbanian@isc.iranet.net

I have the same problem.

Solution #1

posted on Oct 10, 2008

ioiusavoroa

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http://intel-driver.driveray.com/intel-brand/r_13_1.shtml

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Solution #2

posted on Feb 13, 2008

mikemilw

Rank:

Wiz
Rating: 83%, 203 votes

I would check all of your SCSI addresses on the hard drives. to make sure they are unique and do not conflict with those of the AIC-7901 host controller. I am not familiar with that host controller, but usually SCSI allows addresses from 0-15 (0 to 7 in the old days of SCSI I and SCSI II). That's the first place I'd start. Dig up some docs on your hard drives to find how the SCSI addresses can be changed.. Do the same with your AIC-7901. It sounds like a wiring/topology issue.

The other possibility is that the 4th hard disk has gone to SCSI heaven.

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