RAID5 rebuild after disk error on DSS cluster

[rogerk]

hi,
sorry for my late reply.
we had 2 defective drives nearly on the same day. the same as you have. first on the primary and second on the slave.
we use 52 drives of these model and 2 defective drives in 36 months, i think thats ok.

and grats to your successfull rebuild :-)

roger

[pfeifferl]

I checked both defective drives with the WD Data LifeGuard Diagnostics Tool and both drive are healthy and error-free ...!? Why they failed in RAID? Should I however return the drives to WD (RMA)?

[rogerk]

absolutely you should!
we always send them back, there is alway a reason for failure in an raid system.

[pfeifferl]

today another HDD (WD1002FBYS - 01A6B0) crashed with timeout on sec. DSS ... I hate WD disks ...

[DerFux]

Hi!

We have several storages with about 100 WD 1TB SATA discs alltogether.
We have already replaced about 6-7 within 2 years.

Rebuild on a 16 disc storage with Areca 1680 controller and the raid configured as R6 is about 2-3 days.

[pfeifferl]

ok, the same bad experience ...

Do you have more details about your defective HDDs? RE3 or RE4? WD1002FBYS-01A6B0 or -02A6B0? What F/W - C05 or C06? Production date (2008/2009)?

Areca support said it's a WD problem, WD said it's a Areca problem ... always the same sh..!

Do you have experience with Seagate Constellation ES (SATA)? We try to change ...

[DerFux]

Most (probably all) of our failures were on RE2.
The replacement we received from our vendors were RE3.
I think we did`t have to replace a RE3 so far.
(Fingers crossed)