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Author Topic: GDC server disk failure
Paul Willmott
Film Handler

Posts: 25
From: Widdington, Essex, UK
Registered: Jul 2006


 - posted 01-16-2014 08:36 AM      Profile for Paul Willmott   Email Paul Willmott   Send New Private Message       Edit/Delete Post 
We have a GDC SX2001 server in which one of the disk drives has failed. We have tried to replace the drive with a Western Digital SAS drive - WD2001FYYG but the drive is not recognised. Could this be a formatting issue (we have not formatted the drive but I have no idea if it was pre-formatted) or perhaps because we have used a different size (2TB rather than 1TB)?

Any ideas?

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Carsten Kurz
Film God

Posts: 3774
From: Cologne, NRW, Germany
Registered: Aug 2009


 - posted 01-16-2014 08:59 AM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
You need to do a format/RAID rebuild in the server. Do you have the necessary manuals or trained staff? Take care, or you will loose your content.

If it's really a SAS drive (FYYG), it will not work.

Try to get a 1TB SATA drive. A 2TB drive could only be used up to 1TB in a RAID system with other 1TB drives.

- Carsten

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12205
From: Annapolis, MD
Registered: Dec 1999


 - posted 01-16-2014 04:34 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
With the GDC...you really do want to match drives and ensure that the read/write speeds match across all of the drives.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16221
From: Bountiful, Utah
Registered: Jun 99


 - posted 01-18-2014 11:06 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Actually 1TB drives can be mixed in a GDC. I've done it before but make sure the replacement drive has very similar specs as the drives presently in the server.

I have had a lot of issues with new Hitachi drives of lately. Out of two batches of a dozen drives in the last month two were defective out of the box. So if you are buying Hitachi drives in bulk I reccomend you bench test all of them upon receiving to be sure they all actually work. I just hope WD is not messing up the quality on these drives!!

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Paul Willmott
Film Handler

Posts: 25
From: Widdington, Essex, UK
Registered: Jul 2006


 - posted 01-24-2014 07:38 AM      Profile for Paul Willmott   Email Paul Willmott   Send New Private Message       Edit/Delete Post 
Just as an update, I got a replacement drive that was very similar to the failed drive - 1TB, SATA, with same spin speed and read/write times and all is now ok. It took about 5 hours for the RAID to rebuild itself.

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Carsten Kurz
Film God

Posts: 3774
From: Cologne, NRW, Germany
Registered: Aug 2009


 - posted 01-24-2014 07:54 AM      Profile for Carsten Kurz   Email Carsten Kurz   Send New Private Message       Edit/Delete Post 
With mixed drive types, you should have a close eye on playback performance now. If you are not short on money, you should think about buying two other identical drives as the new one. You can replace them one by one, and put the old drives on the shelf as emergency spares.

- Carsten

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16221
From: Bountiful, Utah
Registered: Jun 99


 - posted 01-24-2014 08:50 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Thats an average rebuild time for any raid using 1 tb drives. At least the GDC Raid Status page gives you an idea in minutes how long it's gonna take.

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