Hi Greg, I'm not so great with the hardware lingo, but when I think about what you want in terms of mirroring and striping, your understanding is correct.
ZFS automatically stripes and mirrors data in a mirrored configuration. We would recommend that you present single-disk LUNs and use ZFS mirroring to protect your data and reduce downtime due to hardware failures. If you use the redundancy features of the RAID controller and create a non-redundant ZFS configuration, ZFS will only be available to report the errors, not recover from them. You might review the storage pool section of the ZFS BP wiki, here: http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide Or, the Using Disks in a ZFS Storage Pool section in the ZFS Admin Guide, here: http://docs.sun.com/app/docs/doc/819-5461/gcfog?a=view I'm unclear about the cache on the controller issue, though. If you provide single disk LUNs to ZFS, then the write cache would be enabled. You might also check in the with experts on zfs-discuss, here: http://www.opensolaris.org/jive/forum.jspa?forumID=80 Cheers, Cindy On 08/18/09 20:38, Greg wrote:
Hello all, I have searched everywhere but sadly I have not yet found any information on how to do this. I have raid 2 perc 5i raid controllers in a server, what I would like to do is do a raid 10 setup, however the catch is I would like the controller to handle the striping and opensolaris to handle the mirroring, this way I can use the cache on the card and still get the benefits of zfs. I will be doing 4 different raid 10 pools. The only way I have found is making single disk raid 0 arrays on the card and letting solaris do what is needed. However I believe this to be raid 0+1 and not raid 10. Is this correct? Any posts or just simple pointers in the right direction would be great. Thanks! Greg
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