On 23/07/2010 10:53, Sigbjorn Lie wrote:
The X25-V has up to 25k random read iops and up to 2.5k random write iops per
second, so that
would seem okay for approx $80. :)
What about mirroring? Do I need mirrored ZIL devices in case of a power outage?
Note there is not a ZIL device, there is a slog device. Every pool has
one or more ZIL it may or may not have a slog device used to hold ZIL
contents, wither a ZIL is on the slog or not depends on a lot of factors
including the logbias property.
You don't need to mirror the slog device to protect against a power
outage. You need to mirror the slog if you want to protect against
loosing synchronous writes (but not pool consistency on disk) on power
outage *and* failure of your slog device at the same time (ie a double
fault).
--
Darren J Moffat
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