Tape Device Limit

[redwings]

Hello everyone,

I am trying to get a tape drive activated across the SAN but I am wondering if there is a limit on how many tape devices AIX can have. We had added two drives to a L40 tape unit, I was able to get one of the two activated but when I try the last one I get a scsi adapter error, but our Windows servers are using it. Can anyone give me an idea of what is going on? When I run the lsdev it shows a path rmt14 that is available and shows the location address but I can't get it to work...

Any advice would be great. Thanks in advance.

 

[comtec17]

Do you have the fcp.tape.rte installed?

There is no limit on the number of tape devices AIX can have. I have 20 of them installed on my AIX 4.3.3 and AIX 5.1 servers.

What HBA are you using for the SAN attachment?

With the L40, there is a certain way that you have to daisy chain the drives. Please refer to the user manual for better clarification.

 

[abhishpa]

You may have to use Atape driver to get to the Drive.

 

[redwings]

I have the fcp.tape.rte installed. I am able to get to one of the two new drives, just the second one is not working like it should.

I am using Emulex LP9002 HBAs for the SAN connection.

The L40 was set up by Unysis and I would assume that they know what they are doing.

 

[comtec17]

I would not assume from what you are experiencing. There is an certain order that the drives on an L40 must be daisy chained along with the robot itself.

 

[herzel]

I also had problems with daisy chained in LTO libraries.
Worth checking.