I'm planning to implement Zimbra server on CentOS5 for 2000 users (about 15000 incoming mails and 8000 outgoing mails)
I'm still hesitate between two hardware config :
HP ProLiant DL380 G6 server with 2 x Intel X5560 (4 Core @2.8Ghz) + 8 GB Ram + 2 x 300 GB SAS Raid1
HP ProLiant DL38 G6 server with 2 x AMD Opteron 2435 (6 Core @2.6Ghz) + 8 GB RAM + 2 x 300 GB SAS Raid1
Actually with about 1300 users and only Intel 2 Core @3Ghz , I have a load average around 10 or more. So I dont know if I should buy a very effective proc (Intel) or if I should have more core as possible (AMD).
Thanks in advance (and happy new year !)