imho, not a good idea, any two hdd in your raid0 fail zpool is dead
if possible just do one hdd raid0 then use zfs to do mirror
raidz or raidz2 will be the last choice

Sent from my iPad
Hung-Sheng Tsao ( LaoTsao) Ph.D

On Aug 12, 2011, at 21:34, Tom Tang <> wrote:

> Suppose I want to build a 100-drive storage system, wondering if there is any 
> disadvantages for me to setup 20 arrays of HW RAID0 (5 drives each), then 
> setup ZFS file system on these 20 virtual drives and configure them as RAIDZ?
> I understand people always say ZFS doesn't prefer HW RAID.  Under this case, 
> the HW RAID0 is only for stripping (allows higher data transfer rate), while 
> the actual RAID5 (i.e. RAIDZ) is done via ZFS which takes care all the 
> checksum/error detection/auto-repair.  I guess this will not affect any 
> advantages of using ZFS, while I could get higher data transfer rate.  
> Wondering if it's the case?  
> Any suggestion or comment?  Please kindly advise.  Thanks!
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