Shawn Joy wrote:
Hi All,
Its been a while since I touched zfs. Is the below still the case with zfs and
hardware raid array? Do we still need to provide two luns from the hardware
raid then zfs mirror those two luns?
http://www.opensolaris.org/os/community/zfs/faq/#hardwareraid
Need, no. Should, yes.
The last two points on that page are key:
"Overall, ZFS functions as designed with SAN-attached devices, but if
you expose simpler devices to ZFS, you can better leverage all available
features.
In summary, if you use ZFS with SAN-attached devices, you can take
advantage of the self-healing features of ZFS by configuring redundancy
in your ZFS storage pools even though redundancy is available at a lower
hardware level."
If you don't give ZFS any redundancy, you risk loosing you pool if there
is data corruption.
--
Ian.
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