http://store.westerndigital.com/store/w ... D.13095400
for the WD Caviar Green drives
on the overview tab...
Desktop PCs and external storage requiring high capacity, low power consumption, and cool, quiet operation.
Desktop / Consumer RAID Environments - WD Caviar Green Hard Drives are tested and recommended for use in consumer-type RAID applications (Raid-0 / RAID-1).*
*Business Critical RAID Environments – WD Caviar Green Hard Drives are not recommended for and are not warranted for use in RAID environments utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as they are not designed for, nor tested in, these specific types of RAID applications. For all Business Critical RAID applications, please consider WD's Enterprise Hard Drives that are specifically designed with RAID-specific, time-limited error recovery (TLER), are tested extensively in 24x7 RAID applications, and include features like enhanced RAFF technology and thermal extended burn-in testing.
home nas they say the drives are fine for home type raid.. for a business they wouldnt suggest it. and i think it is just marketing like with your phone or cable.. home its 30 a month for a phone line and 30 for cable.. put that same service with a slower internet speed in a business.. its 50 for the phone and 80 for cable.