[mythtv-users] warning for anyone with western digital green drives

Sat Jan 7 18:07:35 UTC 2012

On 1/6/12 5:50 PM, James Linder wrote:
> On 07/01/2012, at 1:53 AM, mythtv-users-request at mythtv.org wrote:
>
>>> The second drive, a WD10EARS-00Y5B1 with 512 byte sectors, is used as the boot
>>> drive and contains the database. The drive has been in service about 30 months
>>> and shows a Load Cycle Count of 1636408. This one seems too large, particularly
>>> if the lifetime value is really 300K.
>> No, from what I've read, that seams about right. Min was over 500K in
>> 18 months, but I read of people with 600k top 800k in 12 months.
>>
>> 300k isn't the drop dead value, but it's all that the manufacturer
>> says it is designed for. You may be fine going way beyond that (as a
>> lot of people are), but unless absolutely necessary, it's probably a
>> good idea to try an keep it operating within spec if possible.
> Ummm confused ...
>
> === START OF INFORMATION SECTION ===
> Model Family:     Western Digital Caviar Green family
> Device Model:     WDC WD10EADS-00L5B1
> Serial Number:    WD-WCAU48131862
> Firmware Version: 01.01A01
> [snip]
>
> SMART Attributes Data Structure revision number: 16
> Vendor Specific SMART Attributes with Thresholds:
> ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
>    1 Raw_Read_Error_Rate     0x002f   200   200   051    Pre-fail  Always       -       0
>    3 Spin_Up_Time            0x0027   162   160   021    Pre-fail  Always       -       6900
>    4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       178
>    5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       0
>    7 Seek_Error_Rate         0x002e   200   200   000    Old_age   Always       -       0
>    9 Power_On_Hours          0x0032   070   070   000    Old_age   Always       -       22305
>   10 Spin_Retry_Count        0x0032   100   100   000    Old_age   Always       -       0
>   11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       -       0
>   12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       176
> 192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       16
> 193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       178
> 194 Temperature_Celsius     0x0022   107   099   000    Old_age   Always       -       43
> 196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       -       0
> 197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       0
> 198 Offline_Uncorrectable   0x0030   100   253   000    Old_age   Offline      -       0
> 199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       0
> 200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   Offline      -       0
>
> 20000 hours and a count of 178!
>
> James
>
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>
My 2TB:

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Caviar Green
Device Model:     WDC WD20EADS-00R6B0
Serial Number:    WD-WCAVY1837393
LU WWN Device Id: 5 0014ee 2ae80587a
Firmware Version: 01.00A01
User Capacity:    2,000,398,934,016 bytes [2.00 TB]
Sector Size:      512 bytes logical/physical
...

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      
UPDATED  WHEN_FAILED RAW_VALUE
   1 Raw_Read_Error_Rate     0x002f   200   200   051    Pre-fail  
Always       -       0
   3 Spin_Up_Time            0x0027   205   148   021    Pre-fail  
Always       -       6725
   4 Start_Stop_Count        0x0032   100   100   000    Old_age   
Always       -       33
   5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  
Always       -       0
   7 Seek_Error_Rate         0x002e   200   200   000    Old_age   
Always       -       0
   9 Power_On_Hours          0x0032   079   079   000    Old_age   
Always       -       15596
  10 Spin_Retry_Count        0x0032   100   253   000    Old_age   
Always       -       0
  11 Calibration_Retry_Count 0x0032   100   253   000    Old_age   
Always       -       0
  12 Power_Cycle_Count       0x0032   100   100   000    Old_age   
Always       -       31
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   
Always       -       21
193 Load_Cycle_Count        0x0032   001   001   000    Old_age   
Always       -       843942 <-- Two days ago in my post it was 843159, 
avg 400/day
194 Temperature_Celsius     0x0022   122   101   000    Old_age   
Always       -       30
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   
Always       -       0
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   
Always       -       0
198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   
Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   
Always       -       0
200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   
Offline      -       0

Interesting blog here:  
http://www.rrfx.net/2010/03/western-digital-green-hard-disk-drives.html

I might work on adjusting my system filesystem and drive layout next 
chance I get now.  A now cheaper SSD is likely in my future for the main 
OS + MythTV core.

-JK