On Tue, 20 Oct 2009, Matthias Appel wrote:
As these mirrors will be "striped" in the pool I want to know what will
happen to the existing data oft he pool.
Will it stay at its location and only new data will be written to the new
mirror or will the existing data be spread over all 3 mirrors?
The existing data will remain in its current location. If the data is
re-written, then it should be somewhat better distributed across the
disks.
Will ther be a benefit, resulting in more IOPS/Bandwith or will there only
be more space?
You will see more IOPS/bandwith, but if your existing disks are very
full, then more traffic may be sent to the new disks, which results in
less benefit.
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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