New pc build with i7 3770K

Started Apr 21, 2013 | Discussions thread
Jim Cockfield
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This drive...
In reply to Jim Cockfield, May 7, 2013

Jim Cockfield wrote:.

Now, I do have a drive sitting on the shelf that started giving me issues that does show sectors pending reallocation.  So, it may remap those to spares if I zero fill it (since at least it's showing sectors pending reallocation).    I didn't even bother to try and "fix" it with a zero fill, given my experience with the others, as I wouldn't trust using it again.  Instead, I just left it alone as an extra backup.

if I get some time later, I'll zero fill it and see how it behaves.  But, when WD drives don't even move bad sectors to a pending reallocation status (as I've seen in the past with them, including the last one I helped someone with, even after multiple reads trying to copy those sectors at a block with sector read errors), that's a very bad thing from my perspective.

The SMART Data below is from the last one I personally had an issue with (versus one I've helped someone else with recently that wouldn't even move bad sectors to a pending status, despite sector read errors trying to perform copies of it using multiple utilities for that purpose).

At least this one does show sectors pending reallocation, so perhaps it will work "as desired" and move them to spares upon another write to them like you'd get zero filling it.

It's one of their AV-GP series Green Drives, designed for 24x7 operation for applications like video streaming, supposedly able to withstand higher usage, higher temps, etc. in environments where they're being written to continuously, with a lower failure rate.

So, perhaps the firmware in it will work better (since it actually placed sectors with read errors in a pending status).    Again, when time permits, I may zero fill it and see if it behaves correctly.

I didn't bother to try, given my experience with the other WD Drives I had issues with.

But, it only had 233 days of power on time when I started seeing problems with it.  That's pretty absurd from my perspective, with 64 sectors in a pending reallocation status, meaning that they should be moved to spares when writing to them again).

Others have had issues with didn't even bother to move obviously bad sectors to spares, even after initiating self tests that reported read failures, and even after zero filling them (including using WD Lifeguard software for that purpose).

As mentioned before, suit yourself, but I'm not going to buy any more of them, as the drives I've bought so far have all started failing prematurely with sector read errors (not just at a file system level, but at a sector level trying to make block by block copies of them, as well as when performing SMART initiated self tests.

Below is the data from the one that actually shows pending sectors (64 of them pending reallocation, after well under a year on time, despite WDs claims about their AV-GP drive series being designed for 24x7 use with higher temps, etc.).   I posted it earlier in this thread after polling it again.

I notice it also supports Error Recovery Control. So, it may be a better drive compared to their standard "Green" desktop models for error recovery purposes.  But, even if it works as desired (remaps them to spares when zero filling it, which I'll find out when time permits), I wouldn't trust it again, given failing sectors after that short of usage time -- giving me issues after only 233 days of use).

== START OF INFORMATION SECTION ===
Model Family:     Western Digital AV-GP family
Device Model:     WDC WD15EVDS-73V9B0
Serial Number:    WD-WMAVU2482427
Firmware Version: 01.00A01
User Capacity:    1,500,301,910,016 bytes
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   8
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Wed May  1 15:13:19 2013 EDT
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:                 (35400) 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:        ( 255) minutes.
Conveyance self-test routine
recommended polling time:        (   5) minutes.
SCT capabilities:              (0x303f) SCT Status supported.
                                        SCT Error Recovery Control 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   200   200   051    Pre-fail  Always       -       0
  3 Spin_Up_Time            0x0027   214   186   021    Pre-fail  Always       -       4275
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       50
  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   093   093   000    Old_age   Always       -       5662
 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       -       38
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       19
193 Load_Cycle_Count        0x0032   141   141   000    Old_age   Always       -       179657
194 Temperature_Celsius     0x0022   113   108   000    Old_age   Always       -       37
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       64
198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline      -       17
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x0008   199   199   000    Old_age   Offline      -       261
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%      5610         1435135086
# 2  Short offline       Completed: read failure       90%      5596         1435131440
# 3  Short offline       Completed: read failure       90%      5595         1339288601

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JimC
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