> I can say from experience chaining supermicro sas chassis with any type of > disk can be a recipe for disaster. Lsiutil reported a couple million > errors in a couple months time which eventually led to some sort of > contention and corruption on both sides of our mirrors. These were > also SAS and not sata disks.
I use newisys nds-2240 chassis. They were designed to be replacements for the 620j, which left a vaccum in the market when LSI sold off its chassis division to netapp. The devices work flawlessly. I use them in an all sas environment. I put the sata based l2arc disks on a separate controller, on a passive midplane, in the server chassis. If you buy the disks from newisys/sanima-sc, they'll even burn the drives in so you can avoid infant mortality. It has been a very smooth ride. j.
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