I am using DPM 2010 in a disk to disk to tape scenario and have selected "Compress data" in the "Select Library and Tape Details" window when configuring the protection group. However I have noticed that I am backing up a compressed
folder (which I understand should remain compressed when backed up to tape in DPM) and the size of "Data transferred" under the monitoring > jobs window shows the uncompressed amount of 427,166Mb, not the compressed size.
I am using a Dell TL2000 LTO4 autoloader and it has taken 4 hrs 15 mins to back up the folder.
Please can someone advise if this is just showing the uncompressed amount even though it should have compressed the data or is compression not working?
Thanks
Chris