MSA2000 With SATA Host Connections

HP has a new RAID array that allows SATA host connections named the MSA2000
(there are options for iSCSI and Fibre Channel host attachment as well).
Does this product allow more than one host to attach to the array?

Can you attach an MSA50 2.5 SAS drive array to the MSA2000? HP advertises
expansion to the MSA70 only.

Also, where do we get the documentation for this product? Strangely enough
the HP marketing pages on their web site have links to the drivers, but I
could not find a download link for the user manual (otherwise I would have
tried to answer this question myself).

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W