On Aug 19, 2009, at 11:42 AM, "Joseph L. Casale" <[email protected]
> wrote:
With raidz/2 each write must occur one at a time because the write
will occur on all disks in the raidz/2 vdev which has the consequence
of limiting the max iops to the speed of the slowest disk.
Ross,
Won't a RaidZ/2 pool only slow down when a write/read hits a block on
that disc? In reality, it's obviously going to be hitting that disc
often
but just being dilettantish:)
For reads in a raidz/2 yes, but for writes the parity is striped
across all disks in the set so each write hits all disks.
-Ross
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