SuperDuper, SuperSlow! ??
I just downloaded SuperDuper today to backup my 120GB MBP hard drive to my new Maxtor One Touch 4 USB 2.0 external drive. I did some test last night transferring single files to the external drive, and I get about transfer rate of 18.18 MB/sec.
Here is how I am backing up with SuperDuper. 1. I followed the "How to backup to an Image" FAQ on the forum. I created a encrypted, sparse image the size of my MBP hard drive, 120GB. 2. I then chose the full backup feature on SuperDuper. Its not even 50% done, and its been going for 2:29:51. Any ideas what may be causing this slow down? |
Are you sure that your Maxtor is formatted as something other than FAT32?
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UPDATE:
FInaly finished the backp. Here is the log 603,332 files evaulated. 593,396 files copied. Effective copy speed 5.07MB/s. Elapsed Time: 4:12:27 The resulting image is now 72.8 GB At 15,147 seconds, thats about 4.8MB/s on average. Shouldnt it be at least 2-3 times faster ? |
No, actually, that seems about right. I'd expect about 6MB/s directly to a USB drive, less to an image.
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We're copying a lot of tiny files and their associated metadata, folder info, etc. Lots of bidirectional stuff.
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It's really pretty fast -- probably 7-12 minutes on most normal volumes. The last copy I made of my 1.9M file startup volume took about 24 minutes, including copying a few GB of files.
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My 80 (67.4 capacity, 38 used, 30 remaining) gig smart backup usually takes about 7 - 8 minutes. A full erase and replace takes a bit over an hour. Firewire here. (Why does an 80g drive have only 67 capacity, anyway??)
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It shouldn't -- 80GB is likely 80000 x 1000 bytes in "diskspeak", as opposed to 80000x1024 in "bytespeak".
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Thanks dnanian for the help today. I have another quick question. Since I am using a encrypted image to store my backup, will I be able to boot from this image if my MBP gets corrupt?
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No, image files aren't real disks, and as such can't be booted from until restored to a supported boot device.
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