I'm looking into replacement drives for my Areca 1231 SATA RAID. Currently it has 8x 1TB WD RE3 drives. I'd like some more space and hope to improve performance a little since the RAID will not be as full (for however long that will last...).
The RAID is in my colourgrading workstation running Assimilate Scratch so the main purpose is reading dpx sequences at high speed.
I'm thinking Hitachi Ultrastars or Western Digital RE4's, of 2TB.
I've previously been told lower capacity disks are less prone to problems due to lower data density. Is there a good reason to choose 2TB disks over 3TB disks?