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Old 11-30-2006, 02:20 PM
xochi xochi is offline
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My general experience on reasonably fast machines (doing backups to local internal or external firewire drives) is that I get average actual copy speeds in the range of 5-15MB/sec for a fresh backup (Erase, then copy), and can get effective speeds in the 50-150MB/sec range for Smart Updates when less than 10% of the drive needs to be copied.

It's clear that the Erase then Copy speed is slow -- it is clearly not disk-speed bound (since FW400 can do 40MB/sec). I believe that these speeds could be a lot faster if the comparison code were optimized. Whether this slowness is in Apple's OS or in SuperDuper's code is not clear...
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