Matt Connolly's Blog

my brain dumps here…

My first real Time Machine backup on a ZFS mirror

So following my last post about the impact of compression on ZFS, I’ve created a ZFS file system with Compression ON and am sharing it via Netatalk to my MacBook Pro.

I connected the Mac via gigabit ethernet for the original backup, and it backed up 629252 items (193.0 GB) in 7 hours, 23 minutes, 4.000 seconds, according the backup log. That’s an average of 7.4MB/sec. Nowhere near the maximum transfer rates that I’ve seen to the ZFS share, but acceptable nonetheless.

`zfs list` reports that the compression ratio is 1.11x. I would have expected more, but oh well.

And now my incremental backups are also working well over the wireless connection. Excellent.

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