[mythtv-users] WD15EARS WD Green drives

Andre mythtv-list at dinkum.org.uk
Tue May 24 13:29:42 UTC 2011


On 24 May 2011, at 14:20, Jean-Yves Avenard wrote:

> On 24 May 2011 21:34, Andre <mythtv-list at dinkum.org.uk> wrote:
>> 
>> Did you do anything about head reloads?
> 
> No..
> 
> What's that?

WDXXEARS & other "Green" drives aggressively park their heads to conserve power, many believe that this quickly exceeds the head reload design life.

http://forums.anandtech.com/showthread.php?t=2085685

Mine are already showing more reloads than drives I have had for several years, I plan to address this next week.

> 
> Only symptoms is that the console got filled with stuff like:
> 
> [ 2490.288981] ata6.00: status: { DRDY DF ERR }
> [ 2490.288982] ata6.00: error: { ABRT }
> [ 2490.292515] ata6.00: failed to enable AA(error_mask=0x1)
> [ 2490.297067] ata6.00: failed to enable AA(error_mask=0x1)
> [ 2490.297090] ata6.00: configured for UDMA/133 (device error ignored)
> [ 2490.297107] ata6: EH complete
> [ 2490.297400] ata6.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
> [ 2490.297405] ata6.00: irq_stat 0x40000001
> [ 2490.297408] ata6.00: failed command: READ DMA
> [ 2490.297414] ata6.00: cmd c8/00:08:18:00:00/00:00:00:00:00/e0 tag 0
> dma 4096 in
> [ 2490.297415]          res 61/04:08:18:00:00/00:00:00:00:00/e0 Emask
> 0x1 (device error)
> [ 2490.297418] ata6.00: status: { DRDY DF ERR }
> 
> 
> And the drive gets removed from my RAID array.

There are a lot of discussions about these drives being unsuitable for use in raid arrays due to long timeouts waiting for deep data recovery, TLER etc.


> 
> Earlier today I got smart emailing me "Device: /dev/sdf, 5 Currently
> unreadable (pending) sectors"
> 
> Then just before md choked on the drive I got a "FailedReadSmartData:
> Device: /dev/sdf, failed to read SMART Attribute Data"
> 
> I removed the drive and plugged it back ; it worked again for another
> 10 minutes then it all restarted again..
> 
> Hopefully I can swap it tomorrow where I bought it from; but no doubt
> they are going to just ditch me to WD..
> 
> JY
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