SCSI help needed.

[flamingsouls]

Hello,


I have a Tekram 390U2W and a IBM 18.2 gig 10k and a Quantum 4.5 10k. I installed the IBM and it works with Win98 and is recognized in the bootup BIOS of the Tekram. When I installed the Quantum, it is recognized but it doesn't show up in Win98. I believe the ID for the IBM is 7 and the ID for the Quantum is 0. How can I get the Quantum to be recognized?

thx
Josh

 

[Trashman]

<< I believe the ID for the IBM is 7 and the ID for the Quantum is 0 >>


you should be sure on that not guessin...because according to those ID #'s the quantum drive would be your boot up drive...unless ya changed the boot order in your SCSI BIOS.
Your boot drive is always defaulted at ID #0.
can ya give more details on the quantum drive that you are using, model #...68pin or 80 pin.

 

[Rpower]

Things to look at
1 What is the adapter's(390U2W) SCSI ID set to(default ID 7)
2 What is the Boot drive ID set to(default ID 0)
3 That the SCSI ID of your boot drive(IBM) and is set the same ID as in #2
4 That your Quantum's SCSI ID is not set to the same SCSI ID as adapter or IBM drive.
5 If both drives are on the same SCSI chain that only the last drive is terminated.
6 If both drives are different SCSI chains that both are terminated.

 

[flamingsouls]

Ok I checked up on the id's again and the IBM is 6 and the Quantum is 0. I have the IBM setup as the drive to boot off of. When I went to the scsi faq, and it talked about termination, I still don't understand what the terminator is. Is it hardware or software. Are they jumpers? I also had to move the Quantum(68 pin) to another connector. I had to do this because my 50 pin Plextor has to be set to Asynchronous in order to boot. Otherwise it would come up and after like 5 minutes in the BIOS screen saying I should disable the WIDE or the Asynchronous of the drive.

thx
Josh

 

[Woodie]

Since these are all on the same chain, with a UW controller, this is how you should have it set up:

Logically:
IBM (Boot drive) = SCSI 0
Quantum (HD) = SCSI 1-5
Plextor (CD) = SCSI 6
The reason for this is that the higher-numbered scsi ID gets priority in calls, and the CD needs this. The other reason is that ID 0 is the &quot;normal&quot; boot device, so switching to this will eliminate it as a possible cause of problems.

Physically: the IBM and the Quantum should come close to the controller, and the Plextor (50 pin) should come further away (on the cable). I don't know if the Tekram will auto-terminate. You may need a WIDE terminator (physical device) at the end of the cable (after the Plextor).

FYI: Having the narrow device (the 50-pin CD) on the same chain (cable) as the UW devices is going to impact performance (in a bad way) of the HDs. To improve the HD performance, you can get something called a passthrough-terminator or something like that: It's specifically for terminating the high bits (for the UW devices) but allowing the low bits to continue throught the chain to narrow devices. It eliminates the performance hit from mixing wide/narrow devices. I think it's kind of a pricey device, though. 🙁

In the Tekram utility, you should be able to set the CD to Asynchronous (speed setting).


--Woodie

 

[Zepper]

I am assuming both hard drives are LVD and controller is LVD. You need to have the CD drive connected to a separate header on the controller. There is a channel on that board specifically for Single Ended drives. The CD drive has a terimnation jumper. If it is the only or last drive on the cable, set the termination ON. IAC, ONLY the last drive on the non-LVD cable should have termination ON.
The hard drives are LVD and should be connected to the LVD header of the controller. A special cable should have come with the controller that looks VERY different from other flat cables. It should have termination built in to the end of the cable. if not, you will need an appropriate LVD terminator to get best performance from your hard drives. The terminator, if needed, plugs into the last position on the LVD cable. LVD hard drives don't have built in termination. Hope that helps.
.bh.

 

[Sword]

A basic point here :

ID7 is normally the controller ID...
ID0 is normally for the boot disk

So just put your boot drive to ID0 and the other to ID1 or 2 or 3

Good luck

 

[flamingsouls]

OK

Here's how it's going.
1. I got the IBM to be the ID 0. Just moved the jumper until it got down to zero.
2. I then hooked up the Quantum to the same funny looking cable and it was recognized in the BIOS so I did a low-level format. I then loaded up fdisk and formatted it. It then said I had to format the drive using format. I tried to use format d: but it just came up liek &quot;Data entry wrong&quot; or something like that and it said &quot;Abort, Ignore, Retry Fail&quot;
3. So I had to skip the format and tried booting up Windows98 and it still isn't there.

I haven't done anything with terminators as I haven't a clue where to start. Everyone keeps suggesting that I put one on my Plextor. But my Plextor is on a 50 pin connector. Just so people aren't confused, there is 2 internal 68 pin connections, 1 50 pin connection, and one 68 pin external. Why should I put a terminator on the Plex if it works fine?
Thanks for the help.


thx
Josh

 

[mastertech01]

OK, first of all are both HDD U2W LVD? If so then the boot drive as it is, ID 0, and the second HDD I would set as ID8, because the upper ID have priority in Wide negotiation over the lower ID. Second if your Plextor is 50 pin and its on its own 50 pin cable just ensure that it is on the last connector on the cable and that it is terminated. If the Quantum is actually a UW drive it needs to be on the UW channel and terminated. If it doesnt have internal termination add an active terminator to the end of the cable. If both HDD are LVD then make sure you are using a U2W twist to flat cable with the terminator at the end of the cable. Set the controller to auto terminate from its bios. Disable wide negotiation for the Plextor in the bios setup of the controller and set it for 20MBPS transfer. I see you mention that you went to fdisk and tried to format the Quantum.. you need to create the partition first. Then boot to windows and you can format the drive right there from My Computer.