WDC WD10 JPVT-08A1YT2

[bos]

Code:

Oct 29 19:33:04 vyvyan kernel: [1843736.005650] scsi 174:0:0:0: Direct-Access     WDC WD10 JPVT-08A1YT2     01.0 PQ: 0 ANSI: 0
Oct 29 19:33:04 vyvyan kernel: [1843736.006888] sd 174:0:0:0: Attached scsi generic sg6 type 0
Oct 29 19:33:04 vyvyan kernel: [1843736.007079] sd 174:0:0:0: [sdf] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
Oct 29 19:33:04 vyvyan kernel: [1843736.007389] sd 174:0:0:0: [sdf] Write Protect is off
Oct 29 19:33:04 vyvyan kernel: [1843736.007395] sd 174:0:0:0: [sdf] Mode Sense: 23 00 00 00
Oct 29 19:33:04 vyvyan kernel: [1843736.008700] sd 174:0:0:0: [sdf] No Caching mode page present
Oct 29 19:33:04 vyvyan kernel: [1843736.008705] sd 174:0:0:0: [sdf] Assuming drive cache: write through

A customer came to me with this drive which obviously got some few bad blocks on it, so he can't boot into Windows 8.

Hooked it into a cradle to image it with ddrescue. The disk-speed seemed to be constant at 130kb/s, which is an acceptable speed if there are a lot of bad blocks, but there were none according to both ddrescue and the kernel logs. Bad cradle, I thought, so I changed to another. And another. All three cradles, 130kb/s. Imaging 1TB at that speed will take around 59 days.

After getting past 4GB read, the speed went to full (60-90MB/s). When ddrescue came to position 140GB, the speed dropped to 130kb/s again. Nothing in the kernel logs and no errors reported by ddrescue.

I'm curious. Is it the drive itself that locks the data rate this low, or is it the cradle? Or something else?

(Linux 3.2 with ddrescue 1.16)

[fzabkar]

Can you show us the SMART report? You could use smartctl (from smartmontools, Linux) or CrystalDiskInfo (Windows)

[bos]

smartctl -a -T verypermissive /dev/sdf:

Code:

smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-4-amd64] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model:     WDC WD10JPVT-08A1YT2
Serial Number:    WD-WXU1E13VTDK7
LU WWN Device Id: 5 0014ee 658cd2619
Firmware Version: 01.01A01
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:    Sat Oct 31 21:06:09 2015 CET
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
See vendor-specific Attribute list for marginal Attributes.

General SMART Values:
Offline data collection status:  (0x00)   Offline data collection activity
               was never started.
               Auto Offline Data Collection: Disabled.
Self-test execution status:      (   0)   The previous self-test routine completed
               without error or no self-test has ever
               been run.
Total time to complete Offline
data collection:       (16800) 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:     ( 183) minutes.
Conveyance self-test routine
recommended polling time:     (   5) minutes.
SCT capabilities:           (0x70b5)   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   200   200   051    Pre-fail  Always       -       4131
  3 Spin_Up_Time            0x0027   181   180   021    Pre-fail  Always       -       1941
  4 Start_Stop_Count        0x0032   078   078   000    Old_age   Always       -       22248
  5 Reallocated_Sector_Ct   0x0033   195   195   140    Pre-fail  Always       -       237
  7 Seek_Error_Rate         0x002f   183   001   051    Pre-fail  Always   In_the_past 6167
  9 Power_On_Hours          0x0032   097   097   000    Old_age   Always       -       2251
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   097   097   000    Old_age   Always       -       3314
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       41
193 Load_Cycle_Count        0x0032   181   181   000    Old_age   Always       -       57965
194 Temperature_Celsius     0x0022   120   093   000    Old_age   Always       -       27
196 Reallocated_Event_Count 0x0032   195   195   000    Old_age   Always       -       5
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       82
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
240 Head_Flying_Hours       0x0032   098   098   000    Old_age   Always       -       2016

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  Vendor (0x50)       Completed without error       00%       574         -
# 2  Short offline       Completed without error       00%       574         -
# 3  Vendor (0x50)       Completed without error       00%       441         -
# 4  Short offline       Completed without error       00%       441         -
# 5  Vendor (0x50)       Completed without error       00%       227         -
# 6  Short offline       Completed without error       00%       227         -
# 7  Vendor (0x50)       Completed without error       00%        84         -
# 8  Short offline       Completed without error       00%        84         -
# 9  Vendor (0x50)       Completed without error       00%         0         -

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.

[fzabkar]

Lots of bad sectors there.

Try cleaning the HDA contacts, and then apply the "slow fix", if necessary.

Oxidisation on Western Digital PCBs:
http://www.hddoracle.com/viewtopic.php?f=86&t=649

Scott Dwyer's HDDSuperTool has a script for applying the "slow fix" to WD drives:

http://www.sdcomputingservice.com/hddsupertool
viewtopic.php?f=1&p=223328

[bos]

Try cleaning the HDA contacts, and then apply the "slow fix", if necessary.

I checked the PCB, not much (if any) oxidization. Cleaned them anyway as a pre-caution, will try to apply the "slow fix" tomorrow and see if that helps.

Thanks for the input.