Build the cluster out of legos and load each up with 1.9 TB of ram and run everything in memory eliminating all physical I/O. Throw in 500 TB of ssd based storage and a nuclear power plant to power it and you are good to go. Sent from my Verizon Wireless BlackBerry -----Original Message----- From: Guillermo Alan Bort <cicciuxdba@xxxxxxxxx> Date: Sat, 23 Jan 2010 19:59:30 To: <mzito@xxxxxxxxxxx> Cc: <robertgfreeman@xxxxxxxxx>; <verma.labs@xxxxxxxxx>; Oracle-L Freelists<oracle-l@xxxxxxxxxxxxx> Subject: Re: Oracle RAC Server Conf. Actually, a 100node RAC would have a massive overhead in cluster administration and would almost certainly be slower than a smaller RAC environment... On the other hand... it might be faster than VMWare ;-) Alan.-