DLT VS 40/80 Compression

[Patrick Garret]

I am backing up a server using ntbackup (not my choice of software, have to use what I'm told) and I'm having a problem with compression on a DLT VS 40/80 tape drive. The backup wants to span at 40GB almost exactly. I have checked the settings and hardware compression is enabled by ntbackup. I have also checked to make sure the data being backed up can be compressed, and it can. Through testing it would appear I can attain at least 1.5/1 compression ratio. I was wondering if anyone had any suggestions as to what I might be able to check or adjust to see if I can get just a little more data on the tape.

[Jaclyn Rothe]

Please see my thread here for compression issues

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1062137

Also to add, compression is subjective and will be majorly affected by data set, if you ahve non text to back up you will not get a very good compression ratio.

Please read the article I posted at the above link for more info on this.

Hope it helps!