On 12/08/10, Mike Hanby (mha...@uab.edu) wrote: > I'm curious whether others with the PV-124T with LTO4 are using > hardware or software compression. > > I am testing a new Bacula deployment with one of these autoloaders / > drives and haven't found a good suggestion as to which type of > compression to go with.
My setup is a single machine with attached storage and tape drive. I think it depends on how big your backups are and what sort of compression you are looking for. On my fast server (8 core Xeon E5520/2267MHz) it halves the speed of the the read off disk when using software compression (it uses most of the CPU on one core to do the compression). This was a useful mailing list thread: http://old.nabble.com/LTO:-hardware-vs.-software-compression-td15609768.html I have hardware compression on and I get around 100MB/s throughput to the tape device on a SAS card, and manage about 1.1TB on an LT04 tap. I'd be interested to hear other thoughts on this. Rory -- Rory Campbell-Lange r...@campbell-lange.net ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
