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WD10EZEX 1TB weird behaviour


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#1 dronau

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Posted 17 January 2014 - 03:59 PM

Ok, so I recently ran into problems with a Western Digital WD10EZEX 1TB and hope you can clear some facts to me. Specifically, the disk functioned normally a year or so. I use it as a secondary disk in my build for installed software (no OS), music and videos. A few days ago my system was slow and froze when reading data from this disk. I made a Crystaldisk test and saw a high real value (200ish) in "C5 current pending sector count". I immediately made a back-up and tried Data lifeguard diagnostic from the WD site. All tests gave me errors. HDTune saw the same C5 value as Crystaldisk and a benchmark here gave me read speeds between 0.2 to 6mb/s which is pretty slow. Eventually my Win7 would freeze and/or won't start with the hdd connected.
 
Next step were some tests under Dos from a bootable flash drive. With the exception of HDSentinel which said the Hdd is 52% healthy not one utility even read the smart, not to mention formatting it. I was able to wipe the disk under Linux based GParted and create 2 NTFS partitions in it. Now Win7 works with it, I get close to normal speed results but the "C5 current pending sector count" keeps changing after each operation on the disk. From hour to hour I get values like 89, 50, 31, 80, 1, 5, 19 etc. I tried again Data Lifeguard Diagnostic from WD with varied results: sometimes it passes the quick test, sometimes not. It never finishes the extended test. I wiped the disk in this app minutes ago and this is what I get from GSmartcontrol:
 
smartctl 5.43 2012-06-30 r3573 [i686-w64-mingw32-win7(64)-sp1] (sf-5.43-1)
Copyright © 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF INFORMATION SECTION ===
Device Model:     WDC WD10EZEX-00RKKA0
LU WWN Device Id: 5 0014ee 0ae0a7a90
Firmware Version: 80.00A80
User Capacity:    1.000.204.886.016 bytes [1,00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   8
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Fri Jan 17 17:43:34 2014 GTBST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
 
General SMART Values:
Offline data collection status:  (0x84) Offline data collection activity
     was suspended by an interrupting command from host.
     Auto Offline Data Collection: Enabled.
Self-test execution status:      ( 121) The previous self-test completed having
     the read element of the test failed.
Total time to complete Offline
data collection:   (10440) seconds.
Offline data collection
capabilities:     (0x7b) SMART execute Offline immediate.
     Auto Offline data collection on/off support.
     Suspend Offline collection upon new
     command.
     Offline surface scan supported.
     Self-test supported.
     Conveyance Self-test supported.
     Selective Self-test supported.
SMART capabilities:            (0x0003) Saves SMART data before entering
     power-saving mode.
     Supports SMART auto save timer.
Error logging capability:        (0x01) Error logging supported.
     General Purpose Logging supported.
Short self-test routine
recommended polling time:   (   2) minutes.
Extended self-test routine
recommended polling time:   ( 120) minutes.
Conveyance self-test routine
recommended polling time:   (   5) minutes.
SCT capabilities:         (0x30b5) SCT Status supported.
     SCT Feature Control supported.
     SCT Data Table supported.
 
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   196   194   051    Pre-fail  Always       -       7102
  3 Spin_Up_Time            0x0027   177   173   021    Pre-fail  Always       -       2133
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       235
  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   099   099   000    Old_age   Always       -       1012
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       -       222
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       207
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       27
194 Temperature_Celsius     0x0022   098   098   000    Old_age   Always       -       45
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   200   196   000    Old_age   Always       -       20
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
SMART Error Log Version: 1
No Errors Logged
 
SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed: read failure       90%      1011         153312512
# 2  Short offline       Completed: read failure       90%      1009         142136468
# 3  Short offline       Completed: read failure       90%      1009         142136464
# 4  Extended offline    Completed: read failure       90%      1005         142136464
# 5  Short offline       Completed: read failure       90%      1005         142136468
# 6  Conveyance offline  Completed: read failure       90%      1005         142136464
# 7  Short offline       Completed without error       00%      1003         -
# 8  Short offline       Completed: read failure       90%      1000         6016375
# 9  Short offline       Completed: read failure       90%      1000         6016371
 
SMART Selective self-test log data structure revision number 1
SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay

I should also mention the reallocation sector count was and is at 0 in all testing apps throughout this ordeal.

I reckon the HDD is a goner, but I would like to know what's happening exactly? Are there any chances I could make it work reliably or not? And to be sure I won't see it back from warranty as is with some bulls**t excuse, what can I do to further its death?
 
Specs are: MB: ASUS P8Z77-V Deluxe, Proc: Intel i7 3770k, [/size]PSU: OCZ ZS Series 550W, Ram: Corsair 8gb DDR3, SSD: Intel 120gb 330 family.


Edited by hamluis, 17 January 2014 - 07:47 PM.
Removed formatting - Hamluis.


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#2 Netghost56

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Posted 17 January 2014 - 04:46 PM

The most complete way to destroy a HDD is a complete disassembly. Removing the platters will ensure that they can never be used again.

 

I wonder if the drive is been partially exposed to EMP or ESD.



#3 dronau

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Posted 17 January 2014 - 05:39 PM

Thanks for the quick reply! No, I don't think it was exposed to anything like that. It stayed for the whole time inside the case (a Cooler Master tower case), fixed securely in its slot. I never moved it, I didn't open the case, it's not placed near speakers, conductors etc. Besides, all other parts of the computer seem to work flawlessly.

 

And I wouldn't like to destroy it since I would lose the chance to get a refund for it. I'm in an either / or situation with the disk. Can it still be brought to a reliable state? Then, how can I do this? Or... should I call the service? In which case I must make sure I eliminate the possibility of getting it back with a "It's still good so use it until it falls apart" message. How do you interpret the above log? I'm quite sure I'll get different results if I'll test it tomorrow... :unsure:  What's wrong with it? :smash:



#4 James Litten

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Posted 17 January 2014 - 09:49 PM

Hi

 

This line

# 6  Conveyance offline  Completed: read failure       90%      1005         142136464

 

along with the freaky SMART readings that you've been getting indicate something is physically broken inside of it. It should not be trusted anymore.

 

-=[ James ]=-






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