Figured someone in this thread could answer easily:
Building my first ESXI unRAID server. It will run pfSense, unRAID, Plex Server and Plex Home Theatre. So far my build includes an Intel DQ77KB motherboard, an on-order Intel i5-4570T processor, a U-NAS NSC-800 Chassis, and 8 x Seagate Barracuda Green 5900RPM ST320005N4A1AS. Wanted a RAID card that was efficient under ESXI. Heard from someone when considering the IBM M1015 that something like the LSI 8708EM2 with battery backed write back cache of 256MB would make it a ton faster. He recommended I went with a card supporting cache if ESXI is my use as ESXI has no o/s cache and throughput would be horrible. Could someone recommend a card and/or comment if this is accurate?