Best RAID for web+MySQL+mail server?
I'm trying to figure out which setup is best for our dedicated Windows server which will be running Windows 2008 R2 and should act as a web server, MySQL and e-mail.
Initially I thought that raid 10 would probably be the best choice, using 4 disks and that's it. Alternative is 3 disk raid 5, but as far as I understand, raid 5 is slower to write. And since it's web+db+mail server, there's probably going to be a lot of small reads and writes.
Then I had recommended this setup, which is going to be more expensive because of the amount of disks:
Raid 1: 2 drives - place Windows here (C:\)
Raid 5: 3 drives - place data here (D:\)
So 5 drives in total.
What to do?