I'm running ZFS on Ubuntu, and looking to get a controller to attach 8x4TB SATA drives. The best controller I'm aware of at the moment is the LSI 9211-8i. However, I don't believe it supports spinning-down of drives, and might not support drives larger than 2TB. Is there a recommended HBA for ZFS that is known to be supported under Linux/Ubuntu and supports 4TB SATA drives? Drive spin-down would be nice, but not critical (plus I'm not sure if that works under ZFS anyway).