FreeBSD hardware solution for a database server

[Uzi]

Hi

I am looking for a FreeBSD 5.4 hardware/configuration solutions for a MySQL 
database server.

My server is currently running FreeBSD 5.4 with a web/mail/database server 
on a Proliant DL380 G4 (dual Xeon 3.2, 2 GB ram), and the speed isn't fast 
enough.

We have a pretty big database with allot of complex joins/indexes, so a 
dedicated database server seems like the next step (among with 
optimizing/normalizing the database).



Proliant DL580 looks fair to my eyes (as I'm pretty happy with HP)

But I have a few indecisions:



1. 2/4 CPU

2. Amount of ram (4 GB+)

3. And most important (AFAIK) - Storage configuration (RAID 5 / RAID 0+1 
etc.)



What would be the preferred solution?



Thanks,

Uzi



P.S - Please CC me the replies as I'm not subscribed. Thanks.