Using more than 2 drives with a Duplication Script

[ehurd]

We are currently running Veritas Netbackup 4.5GA for Windows 2000. We are using a simple backup script to create a duplicate of our tapes for offsite backup. We currently have 4 LTO drives in our backup device. When we run regular backups all 4 drives are used at the same time. (We are NOT multiplexing though).

The problem occurrs when the duplication script runs it only uses 2 drives at any give time. My question is, How I can I get the script to use all 4 drives for duplication?

Thanks in advance for any help!

 

[comtec17]

It sounds like it is using all 4 drives by your description. It will use 2 to read from and 2 to write to. Are you using the Vault utility that is native to NetBackup?

 

[ehurd]

Thanks for you reply. It uses 1 to read and 1 to write at the most at any given time. But then it will switch after those have stopped being used and then use the other 2 drives (1 to read and 1 to write). It will never have 2 drives reading and 2 drives writing at the same time.

As for the Vault add-on (I assume that you mean the Vault option that you have to pay to add-on) No we are not. The script we use is just one that I wrote.

Thanks.

 

[sdeb]

I don't know how your script works but maybe it is queuing cloning of images that reside on the same tape.

Check if you can split your "imagelist" in 4 different lists (one for each tape used to backup) and then you'll maybe be able to launch 2 differents scripts at the same time launching 2 differents cloning sessions.