On Jan 14, 2009, at 8:04 AM, Peter Steele wrote:
We have been debating whether or we should mirror the swap partitions as well. I set it up not mirrored based on some articles I read on the net,
but we're concerned what might happen to a system if a drive died at a
time when the its swap partition contained active pages. My first
reaction would be that the applications bound to these pages would
crash, something that would not happen if we used swap mirroring.

If you don't mirror swap space, and a drive goes out, you're almost certain to experience a kernel panic and not just application failures in userland. Unless you have an urgent need for lots of swap space available, it's much better from the standpoint of system reliability to mirror swap also.


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