Most helpful critical review
136 of 140 people found the following review helpful
Solid, but problems with LLC
on 26 September 2010
I bought a pair of these to go in my NAS, but was unpleasantly surprised to notice they suffer from a 'Load Cycle Count' problem - which is fairly well publicised on the net I later found out. For those who haven't followed this, the WD Green disks implement a power saving feature where they ship the heads of the drive if the drive has been inactive for a few seconds. Linux-based NAS systems (which is most of them) write out small fragments of data every minute or so, which means the drive has to unship the drive head. You can query your drive's LLC through S.M.A.R.T. and see it ticking up by about 1000 a day.
The drives are specc'ed to a max lifetime LLC of 300k, so you can see where this is heading (groan). It's very poor that there hasn't been a fix for this straight off the bat after 3-4 months since it was first noticed, other than WD telling people to attach the drives to a windows pc and run wdidle.exe to 'lessen' the problem (this reduced the problem by about half).
Kinda wishing I'd bought Seagate Barracuda's instead.