On Wed, 20 Mar 2013 10:09:42 +0200
"Andris Berzins" [off-list ref] wrote:

I am running RAID5 array on 6x 3TB WD SATA disks.
I have problems with all of these disks (including replaced one).
Disks are being randomly kicked out from array and SMART shows
pending sectors which usually can be fixed by read-write or write to that sector.

Perhaps you have a problem with something other than the drives, e.g.:

- a bad or insufficient PSU, providing too low (or too high) voltage over 5V
  or 12V (this could manifest only under load, too);

- not enough cooling? 

- inadequate case, resulting in overly high vibration or even resonance?

Has anyone experienced something similar with WD green series?

If you see a sectors repeatedly appearing that become unreadable but are fixed
after a write, it is usually a symptom of a drive that is partially defective
and should be exchanged. 

But since you have this symptom with all of them, maybe the cause is different.

Is this because of WD "green" series?

No.

-- 
With respect,
Roman