RAM will limit the number of processes you can run, so it will limit the number of connections if you run a ton. CPU is mainly for CGI, php, and other script processing, so if you plan to do alot of SQL or other scripts then make sure that you have enough cpu power to handle it.
Disk I/O is not usually that important for a lot of things so you can avoid having to go for a RAID, but if you want a boost in performance get a 15K drive. Again though if you want to squeeze the most out of your system go for RAID, but then only do it if your scripts require a lot of disk access, for plain reads and HTML,images it may not be as necessary, but it also depends on how many files you serve, etc.
Focus on RAM, then CPU, harddrives are almost never the bottleneck. And if you run more scripts then focus on CPU before RAM.
Hit me up on icq at 36837470 if you have any questions.
|