Ok, I'm having some issues here with my SCSI hardware and I need some input from people who have some experiance with this crap. My setup it as follows:
Adaptec 39160 SCSI Controller
Plexotr 8x20 internal burner connected to channel-a using a 50 pin rounded scsi cable, the burner provides termination.
Maxtor Atlas 10K-III U160 18.4gig drive connected to channel-b using a 68pin cable.
2 Seagate Baracuda U2 9.1gig drives also connected to channel-b using the same 68pin cable.
Both Seagate drives are using StorCase (Kingston) 80 to 68 pin adapters. The cable is terminated on the end with a removable LVD/SE terminator.
The SCSI ID's are setup as the following:
Plextor 8x20 is ID0 on Channel-A
Maxtor 10K-III is ID0 on Channel-B
Seagate Drives are ID1 and ID2 on Channel-B
My problem(s) is this. When I have all three hard drives connected to channel-b I get a bunch of strange behavior. Most noticably is an error in the Event Viewer that says "the adapter did not respond within the timeout period" which is then followed by a bunch of "an error was detected on (insert hard drive number here) during a paging operation".
Also, when I have all three drives connected, sometimes it hangs and I can hear a drive trying to spin up repeatedly. My Maxtor drive is pretty quiet so I'm pretty sure its the Seagates I hear spinning up.
This is what I've done so far:
1. Replaced the Maxtor drive. I just got the replacement in today and it hung up, which I suspect was a Seagate drive, trying repeatedly to spin up again.
2. Low leveled both Seagate drives via the controller card. Repartitioned and reformatted both as well.
3. Tried every possible comibination of connections on the cable. I.e. move ID0 to the end of the chain, the middle of the chain, or the begining to the chain.
4. Swapped the 80 to 68 pin adapters around.
5. Loaded the controller defaults on both channels.
I'm fricken stumpted. I have no idea what the problem is. I dont see any of these issues when the Maxtor drive is on the chain by itself. That tells me that the cable and the terminator is capable of running at U160 speeds without a problem. Also, according to the Adaptec manual, Ultra2 and Ultra160 devices can be mixed on the same chain without and speed penalty or device conflicts.
Then again, the cable may not be bad, but it may be one of the other connectors that is bad. Today I removed what I suspected to be the problem seagate drive because it was the one I heard spinning up and down. I then moved the other seagate drive to the connector the previous one was using and then that drive exhibited the same problem. Maybe the cable is bad at position number 3? (1 is the scsi card, 2 is the maxtor). I'd really rather not buy a cable just to trouble shoot this thing, as a new cable with 5 positions on it is $40. Yowie.
The burner is living happily on Channel-A and doesnt have any problems. I can burn all I want and I use the drive quite often to read cd's that my regular cdrom has trouble with (mostly safedisc2 discs).
So, I need some suggestions from you guys.