jmccormac - 3:26 am on Jun 15, 2012 (gmt 0)
These are some of the considerations:
1: Will the database(s) be mainly read only?
2: If read/write, what is the projected numbers of writes and the read/write ratio?
3: What is the size of the indices?
4: What kind of traffic will the server have to cope with?
5: Will it be running as a single server or as a master with slave servers?
6: What kind of backup protocols will you need?