RAID types performance

[threepointone]

I'm thinking about setting up fast raid array that still performs well. Does anyone know how a raid 0, raid 1, raid 0+1, raid 10, and raid 5 compare in terms of performance, given that I only have a cheapie onboard raid controller available?

 

[Dante_Jose_Cuervo]

Ok, here's a link on RAID FAQ

http://forumz.tomshardware.com/hardware/RAID-FAQ-V1-ftopict43125.html

Now... if you have a cheapie onboard controller you'll be fine with RAID 1 or 0 and maybe 10, but for anything else, you'll need a dedicated controller.

 

[threepointone]

thanks, that was a lot shorter than the RAID summary wikipedia gave me =D

I was initially looking for some benchmarks, but I've managed to dig some out of google. in case you're passing by and wanted to know, raid 0 (2 drive) performs only slighly better than 1+0 or 0+1, at least with nforce(4?) RAID and ICH7 RAID controllers.

One more question, a bit off-topic, but: if I did a raid 0 config with three or more seagate ~250gb 7200.10, would you think it'd perform better (not pure performance benchmarks, but those simulated benchmarks) than a single one of the wd enterprise drives (like 4000yr or 5000ys), or even a single raptor?

 

[Dante_Jose_Cuervo]

Lol, I know about RAID 0's performance. Ok... so multi-drive RAID 0 configs will run faster according to the types of files you're using and your stipe size. As you add more drive your performance will go up bit by bit.