ZFS and "internal" mfi RAID cards, the eternal question

[Borja Marcos]

On Jan 14, 2011, at 12:50 PM, Peter Lai wrote:

> Is there a reason you are ordering your Dells with H700 instead of
> H200; do you really want the battery backed cache anyway?
> http://www.dell.com/content/topics/topic.aspx/global/products/pvaul/topics/en/us/raid_controller?c=us&l=en&cs=555
> suggests the H200 has jbod mode...

Indeed, it doesn't work under FreeBSD. Or am I wrong?

> FWIW, in our case, we didn't need 16 ports and were ok with 3gb
> channels so we actually just settled with the dumb mpt controller.
>> Maybe there would be a way to just tell the card firmware to shut up and let it work like a simple  and well behaved SAS card?
> 
> One could wish :)

Well, the ugly patch to mfi_cam lets me access the disks. Of course it doesn't seen to be a clean solution.




Borja.