MikeMo Posted January 11, 2011 Report Share Posted January 11, 2011 Ok, I have Retrospect Version 8.2.0 (399) on a dual 2.5GHz G5 Xserve (Leopard, all up to date) with an ATTO UL2D HBA, connected to an HP Ultrium 3 1x8 autoloader. This box is connected via two 2Gbps fibre channels to a large Xsan storage array. The Finder can copy data from the storage array at roughly 7GB/minute. Retrospect is doing backups at around 200MB/minute, peaking at 400, much, much less than a straight copy can do. Is this what I should expect from Retrospect on a G5, or is something wrong here? I used to hit 750MB/minute with a dual G4 to a single-drive HP Ultrium 2 over ethernet, so I'm pretty disappointed in the speed, to say the least. In fact, I'd say it is unacceptable. Any advice before I dump Retrospect 8 and go back to 6.1 on the G4? Quote Link to comment Share on other sites More sharing options...
Lennart_T Posted January 12, 2011 Report Share Posted January 12, 2011 See rhwalker's post (roughly) in the middle of this thread; http://forums.dantz.com/showtopic.php?tid/31023/ Quote Link to comment Share on other sites More sharing options...
MikeMo Posted January 12, 2011 Author Report Share Posted January 12, 2011 Yes, thanks, I saw that post. I did another test: fibre channel drive source to a second fibre channel "media set", and got 3GB/minute. This is pretty close to the theoretical capacity of the fibre. So, it appears that Retrospect 8 on a dual G5 is capable of moving a lot of data - just not to this particular tape drive. Does it only do the byte swapping when going to tape? Quote Link to comment Share on other sites More sharing options...
MikeMo Posted January 12, 2011 Author Report Share Posted January 12, 2011 Well, it seems that, when it actually works, Retrospect 8 can hit about 1GB/Minute using my old HP Ultrium 2 drive on the same cable and UL2D HBA. So, the problem is somehow associated with the new HP 960 Ultrium 3 drive. However, I'm totally giving up on Retrospect 8. It just crashes/disconnects/borks out so frequently it just isn't worth trying. I spent most of today just trying to get it to run, and I give up. Amazingly, as fragile as 6.1 is, it's miles ahead of 8.2. Thanks for the help, anyway. Quote Link to comment Share on other sites More sharing options...
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