I wanted to clarify one point – I have been talking a lot about Virtual SAN Appliance because there were several tweets suggesting that other vendors also were doing the same thing. The “thing” VSA does is a software based virtual SAN, using drives that are in the ESX host or connected as direct attach. The point I was making (and having a hard time doing in 140 characters) was that HP LeftHand VSA is the only VMware certified virtual SAN solution. None of the other vendors who have a virtual SAN software product are on the HCL with their software. The confusion was coming because those vendors are on the HCL with a hardware based array.

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