Tag: Backups

A fix for a slow Time Machine

Posted by on February 28, 2013 | Comments Off on A fix for a slow Time Machine

I found a great deal on a new 1TB USB hard drive at Fry’s this week, and decided to improve my personal backup system by replacing my smaller, clunky-sounding (!), old one. It sped through the first 212GB of a 550GB initial back-up, and then seemed to not-quite-stall, taking 2 days to work through the next 6GB, while reporting an estimated time to finish varying between 4 and 12 hours.

I checked the console for file-copying errors, as well as restarting the system and the Time Machine backup itself, to no avail.

This issue has been noted on the Apple Support Discussions site, where users have found that you can speed Time Machine up by disabling Spotlight indexing for the volumes that you’re backing up. The command, to be run in Terminal.app is:

sudo mdutil -a -i off

The result should be instantaneous, if your Time Machine process is currently underway. To reverse the command, and re-enable indexing after your large backup is complete, use:

sudo mdutil -a -i on

— Apparently this issue has existed since last year (though it’s my first encounter with it), and affects users of Lion and Mountain Lion.

Tags: , , , , , , , , , ,

Powered by Wordpress and Stripes Theme Entries (RSS) | Comments (RSS)
FreshBooks