One of my friends who works at I guess you could call it a blue chip company is migrating off of Xsigo, he says the closer they get to getting off of it the less support calls he gets.
Another friend used to work there(Xsigo), says it's promising tech but very buggy.
seems i/o virtualization in general is still iffy at best - hear a lot of complaints about hp virtualconnect as well, which isn't quite as aggressive as Xsigo. Also heard of a bunch of issues with UCS too.
buggy and storage don't mix well...
I bet oracle didn't pay too much. But I imagine it will drive Xsigo customers away even faster. Oracle of course isn't exactly known to be customer friendly.