On 03 August, 2007 - [EMAIL PROTECTED] sent me these 1,6K bytes:

> When using an array's RAID schemes, what higher level ZFS
> features are not in play when ZFS Stripes/Concats are used without using
> any ZFS  RaidZ or mirrors?
> 
> I understand from
> http://www.opensolaris.org/os/community/zfs/faq/#hardwareraid
> 
> that ZFS can only report errors but not correct them. I think ZFS  still
> does copy-on-wite, and rollback on error - these are separate from
> RAID.
> 
> Does ZFS round robin the writes across the LUNs when there is no ZFS
>  RaidZ or mirrors in play?  Or do all the writes go to the first
> LUN until it is full?

Round-robin across all vdevs (single disk, mirror, raidz, raidz2) in a
pool.

> What other ZFS features depend on ZFS RAID ?

Mostly the self-healing stuff.. But if it's not zfs-redundant and a
device experiences write errors, the machine will currently panic.

/Tomas
-- 
Tomas Ögren, [EMAIL PROTECTED], http://www.acc.umu.se/~stric/
|- Student at Computing Science, University of Umeå
`- Sysadmin at {cs,acc}.umu.se
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