How much faster is this . . .(hard drive question)

[XMan]

A 60GB IBM 75GXP is $420. Two 30GB drives and a Promise ATA/100 RAID controller is actually cheaper . . .

What sort of performance difference are we talking?

 

[Fireball]

It'll be a LOT faster with the 2 30gb and the RAID in RAID0. The drawback? You'll have twice the chance of it failing and losing the data due to 2 drives.
Throw a 3rd one in there and run RAID 0+1 and you'll be just as fast with redundant backup.

 

[Adul]

I thought you would need to throw in 2 more drives for mirroring and 3 drives if you want parity. but there isnt support for that so it is either mirror or striping.