keef Posted July 11, 2005 Report Share Posted July 11, 2005 Hi I am using Retrospect 6 to make a duplicate of all files on my imac. The copy is on a firewire drive. At the moment its copying at 27mb per min! What speed should this be running at? Thanks keef Link to comment Share on other sites More sharing options...
Mayoff Posted July 11, 2005 Report Share Posted July 11, 2005 Backup is usually faster then duplicate. You may want to try and see if it is faster for you. Link to comment Share on other sites More sharing options...
keef Posted July 11, 2005 Author Report Share Posted July 11, 2005 Will a backup write everything as one file? keef Link to comment Share on other sites More sharing options...
derekryan Posted July 11, 2005 Report Share Posted July 11, 2005 My backup speed is 1000Mb/min but I am using retro 5.1.177 on OS X 10.39. I was thinking about switching to Tiger and 6.0.212 but So far I had no luck testing speed. I get half the speed I had with Panther and retro 5 using Tiger and retro 6.0.212. Same is true also to tapes using VXA-2 drive. I get 280mb.min using VXA-2 tape with retro 5.1.177 under Panther (10.3.9) and ONLY 148 mb/min with Retro 6.0.212 under Tiger (10.4.1). Derek Link to comment Share on other sites More sharing options...
twickland Posted July 11, 2005 Report Share Posted July 11, 2005 Yes, Backup will write everything as one file that requires Retrospect to retrieve the portions you want. Regarding the speed of Duplicate vs. Backup, in our usual case (copying a small number of large files; replacing entire contents), Duplicate runs considerably faster than backup-- about 1100 MB/min to a FW hard drive (G4 Graphite, 450 MHz DP, OS X 10.3.9, Retrospect v6.0.204, RDU 6.4.102). If you are copying a large number of small files, no matter what the method the process will be slower. Try defining a single folder as a subvolume in Configure> Volumes and using that as the source for a duplicate. Compare the time for duplicating the folder in Retrospect with the time it takes to make a Finder copy. Does it take a lot longer? Link to comment Share on other sites More sharing options...
derekryan Posted July 11, 2005 Report Share Posted July 11, 2005 I also ment Duplicate (from mounted AFP volume to ext FW800 drive) when I said 1000mb/min and backup to tape when I mention VXA-2 drives Derek Link to comment Share on other sites More sharing options...
keef Posted July 12, 2005 Author Report Share Posted July 12, 2005 Hi Thanks for the replies. my hard drive has two fire wire ports. If I connect both directly to my computer will this improve the speed? keef Link to comment Share on other sites More sharing options...
twickland Posted July 12, 2005 Report Share Posted July 12, 2005 Quote: my hard drive has two fire wire ports. If I connect both directly to my computer will this improve the speed? That would be a bad idea. Devices need to be in a single chain. Link to comment Share on other sites More sharing options...
derekryan Posted July 12, 2005 Report Share Posted July 12, 2005 You can't connect both ports on one ext hd to 2 ports on one Mac or even to two different Macs. Link to comment Share on other sites More sharing options...
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