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I've been using 3 mirrored drives for the last few years because I want extra protection. Think about it, one drive suddenly dies and you need to resilver/resy
by olavgg 12y ago
I've been using 3 mirrored drives for the last few years because I want extra protection.
Think about it, one drive suddenly dies and you need to resilver/resync a new drive. What if there are some bad blocks on the existing drive that's left?
With ZFS and 3 mirrored drives, these bad blocks would most likely be healed during the resilver operation.
- taneliv 12y agoAren't bad blocks detected during scrubbing? I assumed scrubbing every two weeks (as I do) should reveal read problems before any drives fail, at least in the common case. Maybe there's something important I'm missing?
- insaneirish 12y agoNo, you're not missing anything. Scrubbing catches it all. Seems your parent is concerned about errors between last scrub and a failure. This is why I have a backup system that I zfs send to.