Request for opinions - gvinum or ccd?

[Wojciech Puchar]

>> Would create a striped data set across da1  and da2
>
> What kind of performance gain can I expect from this? I'm purely thinking
> about performance now - the integrity checking stuff of ZFS is a pleasant
> extra.

with stripping - as much as with gstripe, ZFS do roughly the same.

with RAID-z - faster transfer, rougly same IOps as single disk. After i 
read ZFS papers i know that RAID-z is actually more like RAID-3 not RAID-5.