Dell R710 with PERC H310. GPT issues and hardware raid or ZFS?

[John]

Hello, thank you for your reply.

On 22/06/2013 18:48, Steven Hartland wrote:
> I see you have an dell + mfi controller, there was an important FW update
> released a week or so back do ensure you have that installed or you'll
> suffer from nasty IO stalls.

Thats... thats what I was seeing!!! I was running a svn update for ports
and svn just sat there like a piece of cheese in a state of wdrain
according to top.

OK so firstly I need to update the controller. After some googling I
found this site https://calomel.org/zfs_raid_speed_capacity.html where
they "raid0" each disk to take advantage of the controller, but it seems
(so far) with my controller that once hardware raid is enabled it can't
be disabled. It does not allow the opportunity to make one raid0 disk
from one disk and then go to another disk to do the same. Maybe I should
do it with the first one  then let zfs do the remaining three.

-- 
John