DLT Auto Changer

[Lee Abell]

I have a DLT 2 slot auto changer and I need to go in and change the tapes. I cannot remember the commands that I issue to get in and do this. Can anyone help? Thanks!

[John Poff]

Hi,

We use the 'mc' command when we have to manipulate our auto changer manually. If your autochanger device is something like c7t0d0, here is a sample command to move a tape from drive 1 to slot 3:

mc -p /dev/rac/c7t0d0 -sD1 -dS3

I hope that helps.

JP

[Sridhar Bhaskarla]

Hi,

Look at the man page of "mc" command.

-Sri

[Tom Jackson]

Hi:

mc -s D1 -d S1 -s S2 -d D1

Unloads from drive 1 to slot 1, then loads slot 2 to drive 1.

hth,

Tom

[Lee Abell]

There is a command that allows you to enter into a seperate environment. where you can issue move and status commands. Does anyone know what this is? Thanks!

[John Poff]

Are you thinking of 'uma'? It comes with OmniBack and it has an interactive interface. You just have to specify your auto changer device on the command line:

uma -ioctl /dev/rac/c6t6d0


or something like that.

JP

[Rick Garland · Accepted solution]

If you have OmniBack, the uma commands will assist you in moving tapes around. The command syntax I use is as follows:

/opt/omni/lbin/uma -ioctl /dev/rac/c47t6d0 -barcode

The /dev/rac/c47t6d0 is my device name for the robot. Use the device file name specific to your environment.

If no OB, use the 'mc' commands as specified.

Do remember that which ever method you choose you will probably need to become aquainted with the 'mt' command as well. The 'mt' command allows you to rewind a tape, get the status of a tape device, offline a tape from a tapew device, etc...

[Greg OBarr]

What brand of autochanger are you using? Some manufacturers provide their own proprietary interface to the robot. ATL for example is one I have used that does this. If this is the case, search the manufacturer's website and you'll probably see something to jog your memory at least.