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I'm aware of 64u http://www.64u.co.uk/ offering SSD and SAN storage. Who else?
If you're a provider, what stops you from offering a combo? (investment outlay? waiting on the price of SSDs to drop further? branding thing ("we're SSD powered"), added complexity, little demand etc). Personally, as much I'm drawn to SSD, I prefer a combo as I can both do more with it and decide which "hot files" benefit from SSD.
*local = storage provisioned directly to the guest (e.g. local HDD, SAN storage but not FTP backup space)