Super Duper and NAS
Wanted to do a backup of my machine before installing Leopard, but running into the problem that SD is very slow when backing up to my NAS.
Have a Linkstation Pro, and SD shows in its status window a transferspeed of about 3-4MB/s, the activitymonitor shows 7-8MB/s. Fact is that it takes around 10 hours to backup my 100GB HD. Copying a 4GB dmg file to the Linkstation gives a transferspeed of 18-20MB/s from the activitymonitor. Why the big difference in speed between a SD backup and a straight copy? A backup to a external FW400 drive took about 3 hours. Any ideas how to speed that up? The NAS is backed up to a sparse image, the firewire drive was just copied over by SD. |
Sparse images have a certain amount of overhead, as does the network, and copying a lot small files, their metadata, dates, times, etc has a decent amount of back-and-forth that can take longer on a network...
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Ok so much overhead?
Would making a normal dmg file be much quicker? I dont need this backup to update, as its just a savepoint to go back to Tiger when Leopard fails. |
No, a read-only DMG would be much slower.
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Ah there goes another idea.
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