If we go with the Itanium setup we will use a couple of HP Integrity rx8640 Server to start with.
There are not that big, but also not that expensive.
And since Windows 2008 Itanium will only support 32 CPU's it is a good choise except for the maximum of 512 GB memory
We use the HP Integrity rx8640 Server for a lot of mid-range database servers running HP-UX and Oracle, but for big databases we run them on HP-UX and HP Integrity Superdome Server where we can have 64 CPU sockets and 2 TB of memory.
The other option would be to go for a setup with HP Integrity Superdome Server.
But can anyone tell me what platform is the best to run a MS SQL-Server on?
/johnny