The Controller dosn't detect the forth SCSI Hard disk.
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 firstname.lastname@example.org
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Re: The Controller dosn't detect the forth SCSI Hard...
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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Any "Parity Error" is from a communication error on the SCSI bus, and it's bad! Errors are a way of life, and the SCSI transceiver has failsafes to fight them, and one of these is parity. Consider it extra data that the controller sends when you transfer data to your hard disks. Once there, the drives transceiver does a simple ccheck and verifies that the parity is correct. If not, a Parity Error is generated.
99% of the problems surround the SCSI bus itself in the form of a damaged SCSI cable, loose terminator, or a bent pin on a SCSI connector (latter being most common). This error is more apparent after moving the SCSI devices, resulting in unplugging and then replugging the cables back onto the Targets (HDD, CD/DVD ROM, printer, etc.) or back onto the Host Bus Adapter (HBA - the 29320 in your case). Check ALL pins. You can try to straighten the pins, otherwise it's time to replace the cable. REMEMBER that terminators are a must and can also cause Parity Errors if there is no termination present on one end of the bus or the other. This coming from an ex-Adaptec employee and support person! :)
You do not need a hard disk controller driver. The hard disk is configured in the BIOS automatically.
If Windows install cannot detect the hard disk then either the hard disk is faulty or the motherboard disk controller is faulty.
Re-seat the hard disk, it may not be making proper electrical connection and then go to the BIOS configuration to see if it detects the hard disk, if not then the hard could be faulty or the disk controller is faulty. In most cases it is the hard disk that is faulty.
To further test the hard disk, remove the hard disk and connect it to an USB hard drive adapter, then plug it into a working computer's USB port. If this computer does not see it as an external hard drive or you cannot open the various folders and files, then the hard disk is definitely faulty.
Then you need to replace the faulty hard drive.
my guess is no but since i haven't dealt with this type of server i'm going to suggest you go to hp.
if you just goto hp.com and search on live chat and a link will come up.. they should be able to help unless it's too old since i'm not sure what generation we are on now..
This next solution is viable in win 98, and I don?t see any reason why it shouldn?t work for you too. If you know of anything I?m missing you should consult someone else. The solution is slightly complex, so I hope I can explain it properly:
1. Create a startup disk so you can format and install windows.
2. Set the new HD as master and connect it to Primary IDE.
3. Disconnect the SCSI and remove it.
4. Restart the computer with the disk you created (with the new HD connected).
5. Go to the Bios settings in order to make sure that the computer does recognize the new HD as the primary drive in the first IDE.
6. Now, FDisk the new HD, set the partitions, restart and format it. Install the OS and make sure it is working properly.
7. Insert the SCSI and restart again.
8. At this stage the computer would reboot into the IDE and see the SCSI/ You may have to change something in the OS settings for that, but I don?t know where.