[YoRugMan]

Good morning all,

This is my first post in this fine forum, and I'm sorry if this question has come up before but I need to hopefully get an answer before I make a decision on the subject this afternoon.

I use Pro Tools M-Powered on a Windows XP desktop with the maximum amount of usable RAM (3.6Gb).
I'm ready to upgrade my Hard Drives but am in need of advice.
I am also soon to receive my first sample library from East West Quantum Leap that uses their PLAY engine.

Having this in mind, can anyone confidently tell me what the most important aspect of a Hard Drive is when producing music in this way?

I've researched a couple of drives - for example, the Western Digital RE4 (2,000Gb) has excellent read transfer rates (better in most cases than the Black series), however, the Western Digital VelociRaptor (which I already have two of) has much better access times and interface performance (according to tomshardware.com).

When considering how sample-based virtual instruments or "ROMplers" work, which aspect of a hard drive should I look at?

Thanks in advance.