>>>> Option 1) 2 servers each having 2.0TB raid disk with SAS >>>> drives, 2GB ram and standard other features. >>> If going down this road, why not look into getting one of >>> those fancy new storage enclosures where the RAID is built >>> into the enclosure and can allow 2 servers to simultaneously >>> access the arrays with full battery backed write-back cache? >>> >> What is available for Linux in this department? > > I'm testing out an MD3000 from Dell. It can allow 4 hosts with > single 4x serial paths, or 2 hosts with redundant 4x serial > and can chain up to 2 MD1000s off it for up to 45 spindles. > > It was 2 RAID controllers in 2 EMMs with 512MB BBU write-back > that is synchronized between them which act as redundant RAID > controllers. Ships with 4 plain-jane 2 path SAS controllers > for host systems. > > Downside, right now, it currently only supports SAS drives, > they hope to have a SAS/SATA firmware update maybe by year-end. Binary drivers from Dell?