On Jan 15, 2012, at 3:52 AM, John R Pierce wrote: > On 01/14/12 2:32 PM, Vahan Yerkanian wrote: >> Going back to the LSI website to check if these 9750 have an option to link their caches into one... > > I was curious, *all* the LSI sAS RAID cards say 'single controller > multipathing', both the megaraid cards and the 3ware cards (I'm setting > up a server that has a 9260-8i now). I looked at their optional > software, and none of it implements any sort of multi-controller failover. > > If you have split or multiple storage backplanes/enclosures, I"d split > the disks between the two cards, and multipath between each controller > and its respective disks. this will take another set of SAS cables, of > course > At the moment I have two 9750-4i installed, each having a sff8087 x4 cable going to the same backplane containing dual-port sas disks. This was supposed to be a load balanced, multi-controller failover setup.