Adding a second SCSI tape drive fails.

[golyg]

I am attempting to add a second SCSI tape drive by "daisy chaining" them together.
The top one takes the cable from the computer and then with another cable I plug it into the second "new" tapedrive. I then use a terminator on the second one.
When I do this, the computer does not recognize either one. (The original one works fine by itself)
I have the original one scsi id set to 7, and the second one set to 3, what I had the original set to prior.

I am not familiar with scsi drives or there setup, I have them setup as the bottom port as input and the top port as output/terminator.

Any ideas on why this is failing is greatly appreciated.
The OS is windows2000.

Thanks

 

[edfair]

Depending on HD controller your ID7 may be interfering with the cotroller ID which on some is 7.
Ports are common, so that is OK.
Try the tape with ID 7 by itself and see if it doesn't lock it up. Ed Fair
unixstuff@juno.com
Any advice I give is my best judgement based on my interpretation of the facts you supply. Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.

 

[BFOJ]

So the terminator was on the original tape drive or is it possible the original tape drive has an internal terminator which can be turned off usually by a switch or software? The important thing here is to only have terminators on the end of the daisychain (i.e., Host Adapter and last daisychained device).

I suggest you not use SCSI ID 7 which is normally reserved for the SCSI Host Adapter. If you have a SCSI Hard Disk which is the boot disk, then it's probably using SCSI ID 0, so you don't normally want to use that ID either. Your Windows diagnostics should show you what SCSI ID's are available. Try ID 3 for one tape drive, ID 4 for the other.

Also remember to power on the external SCSI devices BEFORE powering on the CPU. When booting up do you see the SCSI devices listed on the screen?