[mythtv-users] warning for anyone with western digital green drives
jk90090
jk90090 at gmail.com
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
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