DLT Compression and Brightstor v9

[baf879]

I have Brightstor v9 running on a Windows NT 4.0 Server with a Compaq 20/40 DLT drive. The backup job I'm running has a total of about 27 GB of data.
In Brightstor, when I click the device and then "Compression" a message pops up saying "Do you want to DISABLE compression on this device?" (I click "No"). I'm assuming that means the drive is able to store 40GB. The problem is, the job stops at about 20 GB and prompts me to enter new media.
This doesn't make sense....has anyone else had this happen?

 

[davidmichel]

That would be an indication of the compression being enabled.

40gb is theory not fact, it depends on the type of data. Zip, jpg, mp3, exe, dll compress little if any at all. Also lots of small files take more overhead and so use more tape.

 

[baf879]

OK, I see how that could change things. There are a lot of small files....the server holds electronic copies of all printed financial reports that encompass all departments. It goes back at least 2 or 3 years, so there are a lot of smaller files.