Raid Questions

[Tbid]

I'm interested on attempting to have some safeguard on my data so I'm looking into Raiding some of my drives.

My drives 3 x http://www.overclockers.co.uk/showproduct.php?prodid=HD-366-WD&groupid=701&catid=14&subcat=1279

1 x Hitachi Deskstar 7K3000 2TB

I've identified 2 potential options I could either put the 3 WD drives into RAID 5 or RAID 0+1 With 2 WD drives and the Hitachi drive, I've looked into it and in terms of keeping my data safe Raid 0+1 seems the better option?

Mainly because I have 2 separate types of Drive so the same mechanical failure is very unlikely to affect the whole array.

Which would be the best option to go for performance wise?

 

[Tbid]

RAID of any description isn't a back up solution.

If the RAID array failed, your PC was stolen or damaged in a fire etc. where's your "back up"?

Answer, it's gone.

Use an external drive to back up your data and keep it stored away from your PC.

I already have an external backup of my important data but I wish to RAID my data in the event of any of my internal drives failing.

 

[Tbid]

Thanks for the info, The thing I'm mainly wondering though is if it'll be possible to RAID 1+0 with 3 Drives, My reasoning is that I can stripe the data across 2 of my 1TB drives then mirror this data with my 2TB drive, is this a viable option?

 

[Tbid]

In that case I think I'll RAID 0 - 2 x 1TB drives then back up to my external disk and copy to my internal 2TB drive, would this be the best solution??