Quoting "Roman Mamedov" <rm@xxxxxxxxxx>: > On Wed, 20 Mar 2013 10:09:42 +0200 > "Andris Berzins" <pkix@xxxxxxxx> 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 se >>ctor. > > 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); I have bought 550W PSU specially for this. The server is connected through APC UPS. > - not enough cooling? Putting a hand temperature seems lightly warm. > - inadequate case, resulting in overly high vibration or even resonance? Well, the case is average workstation case. >> Has anyone experienced something similar with WD green series? > > If you see a sectors repeatedly appearing that become unreadable but are fix >ed > after a write, it is usually a symptom of a drive that is partially defectiv >e > and should be exchanged. That one which I exchanged worked for 3 month without problems. > > But since you have this symptom with all of them, maybe the cause is differe >nt. > > >> Is this because of WD "green" series? > > No. "Green" series are special because they spin down after 7 seconds and they do not return in timely manner when read error occurs. > > -- > With respect, > Roman -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
