On 04/20/10 05:32 PM, Sunil wrote:
ouch! My apologies! I did not understand what you were trying to say.
I was gearing towards:
1. Using the newer 1TB in the eventual RAIDZ. Newer hardware typically means
(slightly) faster access times and sequential throughput.
Using a slice on a newer 1TB drive will probably be slower than using
the whole of a 75GB one (write cache and all that).
2. Getting the RAIDZ serviceable quick. Your method will cause two full copy
operations. Data will likely be copied to the same extent with my method but it
will become and remain available (almost) all the time (minus 1TB failing on me
during the transition).
It may take two copies, but:
a) you end up with a better solution
b) I've never been inclined to try it, but a raidz with two slices on
one drive will probably run like a three legged dog! Replicating 1TB of
data doesn't take that long, so two copies with sensible pool topologies
may be quicker than one with a bad one.
c) you will have a spare 1TB drive to put in a USB enclosure and use for
backups!
--
Ian.
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