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#1
06-20-2008, 09:40 PM
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Slow Smart Update to encrypted sparse image
I created an encrypted sparse disk image from the shell using hdiutil and then have SD backing up my disk to it. It seems to be a whole lot slower Smart Updating the disk (3.33MB/s VS. 100+MB/s previously) though than it was before when I just backing up directly to my USB hard disk.
Is there reason why it's so much slower? 
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#2
06-20-2008, 09:43 PM
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Sure. You've added a number of levels of indirection, including encrypting, and this is likely the first copy, so it's going to be copying a lot more. (A full backup isn't going to go at 100MB/s to USB the first time through...)
__________________
--Dave Nanian
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