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Unable to find 2nd DLT for Library

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Galrahn

IS-IT--Management
Aug 27, 2001
65
US

Hopefully someone can help me...

I am bring up a Windows 2000 Server with a 48 DLT tape library attached. The library has 2 DLT drives. We installed 3 SCSI cards to the server, 1 single ended for the library and 2 differential for each DLT. Both of teh Differential cards are adaptec 2944UW.

Basically I have to turn off Wide negotiation to get the DLT to work, I know this from a previous use with the library. Problem is, I have both 2944 cards in the same scsi bus on the server, and have yet to be able to get the second DLT drive detected by windows.

When I boot up, WIndows finds the library and the first DLT tape with no problems. BackupExec works fine with both. In BackupExec (8.6), it says the second DLT tape is disabled.

When I go to device manager, it only sees the first DLT tape drive, if I scan for new hardware, it finds the DLT tape device, but I have to reboot in order to use it. Problem is, when I reboot, the second DLT device cannot be found.

Things I have tried.

Because I have 2 controllers on same bus, I did a couple things. I manually edited the system bios and manually assigned IRQs to both cards. I also edited the bios config of the cards and assigned seperate controller IDs, 7 for the first one, 6 for the second one.

The DLT tapes are assigned to ID 4 and 5 respectively.

THe Library connected to the SE scsi card is on a totally seperate bus, is using ID 3.

Everything through POST appears fine, the server finds everything with no problems. Only when Windows 2000 comes up does it not find the second tape.

Because Windows 2000 is not finding the second tape, Removeable Storage always fails on the changer. I have the Removable Storage service disabled until I can get the DLT to be found.

Any assistance would be helpful.

Galrahn
 
Try changed the termination - I had a 15 tape AIT that was seen as a single tape until I forgot to put an active terminator on the end then everything worked fine.

Go figure...
 
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