Unexpected Results using Smart Update
Using SD 2.1.2 (v79) to backup to external firewire drive.
I have 3 scheduled backups set up (daily, weekly, monthly). All 3 have the same settings: Backup - user files using Smart Update. Based on my understanding of Smart Update, it basically makes an exact duplicate of what you are backing up by adding/deleting those files that changed since the last backup. I manually ran each backup and I got unexpected results. The "daily" image is 30.17 GB. Both the "weekly" and "monthly" images are 22.55 GB. I would expect all 3 to be the exact sme size given that I am using Smart Update. What am I missing? -- Bronson |
Are you looking at the external size of the file?
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I'm doing a Get Info on the actual disk image that SD creates.
-- Bronson |
If they're all Smart Updates, and the files aren't changing in between the runs, they should be the same size (internally), yes...
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OK, I mounted each image and the internal size of all 3 is 22.55 GB.
Now that I know each image is identical, why is there a difference in the disk image sizes? I'm not too familiar with the disk image format and how it sizes the images. FYI - all three are sparse images. -- Bronson |
Image files grow, but rarely shrink. So, depending on the pattern of the update, they could end up being different external sizes. But the internal size should be the same, as it is.
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Thanks Dave.
-- Bronson |
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