WAIT, I might have read it wrong!
Previous comment
~~Yes that controller should be fine. For ZFS you need a controller that can be set to JBOD mode, (Just a Bunch Of Disks), according to the Dell website that controller can be.~~
http://www.dell.com/learn/uk/en/ukbsdt1/campaigns/dell-raid-controllers this is the page for that controller, check with controller you have and see if the table says it support JBOD