On Apr 28, 2010, at 6:37 AM, Wolfraider wrote:
> The original drive pool was configured with 144 1TB drives and a hardware 
> raid 0 strip across every 4 drives to create 4TB luns.

For the archives, this is not a good idea...

> These luns where then combined into 6 raidz2 luns and added to the zfs pool.

... even when data protection is achieved at a higher level. 
See also RAID-0+1 vs RAID-1+0.
 -- richard

ZFS storage and performance consulting at http://www.RichardElling.com
ZFS training on deduplication, NexentaStor, and NAS performance
Las Vegas, April 29-30, 2010 http://nexenta-vegas.eventbrite.com 





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