Best RAID for web+MySQL+mail server?

[SirTweetAlot]

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?

[VDSWARE]

Go with RAID 10 and 4 SSD drives.
This way you will get 4x read and 2x write speed gain & fault tolerance of least 1-drive failure.
You can't go wrong with that setup.
This is just my personal preference.

[SirTweetAlot]

We went with RAID 10 and 4 normal server drives. SSD is still a bit too expensive - but the setup we got, is quite good - I'm happy with it. Next time, it will be SSD for sure though