Well, we always sell server with raid 5, and the server usely runs only oracle, so what can i say to my supervisor to make him sell good disk configuration to clients? And what is that disk configuration.

It is always windows 2000, with at least 1 gig of ram, the os is always on disk raid 1 mirror. I cant change the os we are selling for a lot of reasons, but i know i could change the damn disk configuration, i found at least 6 of my clients that have a lot of disk contention.

What does good consultant have to say about RAID 5?

Basicaly, i want to know advantage and disavantage of both configuration. Give me links if you have some.