Score:0

ATA error count increased from 0 to 15 however Current_Pending_Sector is 0

nc flag

I got below error via an email 2 weeks back:

The following warning/error was logged by the smartd daemon:

Device: /dev/sda [SAT], ATA error count increased from 0 to 15

Device info:
ST1000LM035-1RK172, S/N:WCB0Z83A, WWN:5-000c50-09c2b85e7, FW:SBM3, 1.00 TB

I checked Smart data for the drive.

It shows: Current_Pending_Sector as 0

Also the self assessment seems to be fine:

SMART overall-health self-assessment test result: PASSED

I did not found any recent alerts in the syslog for past 1 week or so apart from this:

Jun 19 22:44:37 raspberrypi smartd[416]: Device: /dev/sda [SAT], SMART Prefailure Attribute: 1 Raw_Read_Error_Rate changed from 80 to 81

Below is the smartctl output:

<user>@raspberrypi:~ $ sudo smartctl -a /dev/sda
smartctl 6.6 2017-11-05 r4594 [armv7l-linux-5.10.42-v7+] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     ST1000LM035-1RK172
Serial Number:    WCB0Z83A
LU WWN Device Id: 5 000c50 09c2b85e7
Firmware Version: SBM3
User Capacity:    1,000,204,886,016 bytes [1.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Form Factor:      2.5 inches
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-3 T13/2161-D revision 3b
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Tue Jun 22 21:26:47 2021 BST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

~
~

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   081   058   006    Pre-fail  Always       -       135782033
  3 Spin_Up_Time            0x0003   099   099   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   098   098   020    Old_age   Always       -       2845
  5 Reallocated_Sector_Ct   0x0033   097   097   036    Pre-fail  Always       -       1824
  7 Seek_Error_Rate         0x000f   074   060   045    Pre-fail  Always       -       26398781
  9 Power_On_Hours          0x0032   096   096   000    Old_age   Always       -       3868 (156 105 0)
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   098   098   020    Old_age   Always       -       2449
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   085   085   000    Old_age   Always       -       15
188 Command_Timeout         0x0032   100   096   000    Old_age   Always       -       77310590998
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   068   044   040    Old_age   Always       -       32 (Min/Max 32/33)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       11
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       1447
193 Load_Cycle_Count        0x0032   094   094   000    Old_age   Always       -       13514
194 Temperature_Celsius     0x0022   032   056   000    Old_age   Always       -       32 (0 16 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       2953 (183 77 0)
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       6666012183
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       8609692665
254 Free_Fall_Sensor        0x0032   100   100   000    Old_age   Always       -       0

SMART Error Log Version: 1
ATA Error Count: 15 (device log contains only the most recent five errors)
    CR = Command Register [HEX]
    FR = Features Register [HEX]
    SC = Sector Count Register [HEX]
    SN = Sector Number Register [HEX]
    CL = Cylinder Low Register [HEX]
    CH = Cylinder High Register [HEX]
    DH = Device/Head Register [HEX]
    DC = Device Command Register [HEX]
    ER = Error register [HEX]
    ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.

Error 15 occurred at disk power-on lifetime: 53 hours (2 days + 5 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 d5 08 ff ff ff 4f 00      04:02:06.187  READ DMA EXT
  b0 d5 01 c0 4f c2 00 00      04:02:06.178  SMART READ LOG
  b0 d5 01 00 4f c2 00 00      04:02:06.178  SMART READ LOG
  ef 03 46 f0 72 0f 00 00      04:02:06.165  SET FEATURES [Set transfer mode]
  ef 03 0c f0 72 0f 00 00      04:02:06.154  SET FEATURES [Set transfer mode]

Error 14 occurred at disk power-on lifetime: 53 hours (2 days + 5 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  60 00 08 ff ff ff 4f 00      04:02:05.904  READ FPDMA QUEUED
  60 00 08 ff ff ff 4f 00      04:01:55.376  READ FPDMA QUEUED
  60 00 08 ff ff ff 4f 00      04:01:55.366  READ FPDMA QUEUED
  60 00 08 ff ff ff 4f 00      04:01:55.362  READ FPDMA QUEUED
  60 00 08 ff ff ff 4f 00      04:01:55.362  READ FPDMA QUEUED

Error 13 occurred at disk power-on lifetime: 53 hours (2 days + 5 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 d5 08 ff ff ff 4f 00      04:01:18.788  READ DMA EXT
  b0 d5 01 c0 4f c2 00 00      04:01:18.779  SMART READ LOG
  b0 d5 01 00 4f c2 00 00      04:01:18.779  SMART READ LOG
  ef 03 46 f0 55 c5 00 00      04:01:18.767  SET FEATURES [Set transfer mode]
  ef 03 0c f0 55 c5 00 00      04:01:18.756  SET FEATURES [Set transfer mode]

Error 12 occurred at disk power-on lifetime: 53 hours (2 days + 5 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  60 00 08 ff ff ff 4f 00      04:01:18.534  READ FPDMA QUEUED
  60 00 08 ff ff ff 4f 00      04:01:18.529  READ FPDMA QUEUED
  60 00 08 ff ff ff 4f 00      04:01:18.443  READ FPDMA QUEUED
  60 00 08 ff ff ff 4f 00      04:01:18.442  READ FPDMA QUEUED
  60 00 08 ff ff ff 4f 00      04:01:18.442  READ FPDMA QUEUED

Error 11 occurred at disk power-on lifetime: 53 hours (2 days + 5 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 d5 08 ff ff ff 4f 00      04:01:18.095  READ DMA EXT
  b0 d5 01 c0 4f c2 00 00      04:01:18.084  SMART READ LOG
  b0 d5 01 00 4f c2 00 00      04:01:17.954  SMART READ LOG
  ef 03 46 98 54 c5 00 00      04:01:17.941  SET FEATURES [Set transfer mode]
  ef 03 0c 98 54 c5 00 00      04:01:17.930  SET FEATURES [Set transfer mode]

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%      2822         -

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.

Is it safe to continue using this HDD?

Michael Hampton avatar
cz flag
This drive was throwing errors two days after you first turned it on. It has not been safe to use at any time !
Amandeep Singh avatar
nc flag
Thank alot for confirmation Michael, Took it offline for replacement !!
mangohost

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