On 21/06/11 7:54 AM, Todd Urie wrote:
> The volumes sit on HDS SAN.  The only reason for the volumes is to
> prevent inadvertent import of the zpool on two nodes of a cluster
> simultaneously.  Since we're on SAN with Raid internally, didn't seem to
> we would need zfs to provide that redundancy also.

You do if you want self-healing, as Tomas points out. A non-redundant
pool, even on mirrored or RAID storage, offers no ability to recover
from detected errors anywhere on the data path. To gain this benefit of
ZFS, it needs to manage redundancy.

On the upside, ZFS at least *detected* the errors, while other systems
would not.

--Toby

> 
> On Tue, Jun 21, 2011 at 4:17 AM, Remco Lengers <re...@lengers.com
> <mailto:re...@lengers.com>> wrote:
> 
>     Todd,
> 
>     Is that ZFS on top of VxVM ?  Are those volumes okay? I wonder if
>     this is really a sensible combination?
> 
>     ..Remco
> 
> 
>     On 6/21/11 7:36 AM, Todd Urie wrote:
>>     I have a zpool that shows the following from a zpool status -v
>>     <zpool name>
>>...
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