ZFS across controllers
Bob Friesenhahn
bfriesen at simple.dallas.tx.us
Fri Oct 28 15:16:44 UTC 2011
On Fri, 28 Oct 2011, Dennis Glatting wrote:
> This seems like a stupid question but is there any significant performance
> problems with a ZFS RAIDz volume served across multiple controllers?
No. Available IOPS will be dominated/limited by whichever controller
and disks are slowest to respond.
> I have seen two cases that confuse me. First, performance degrades over time.
> I have read there was previously a prefetch bug but it has been fixed. I also
> recently turned off prefetching to test (no opinion yet).
In what way is performance degrading? What means are you using to
evaluate performance?
Bob
--
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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