Ho appena installato diversi nuovi HDD in una macchina e mi è capitato di notare che uno di loro aveva riportato due errori, quindi l'ho eseguito smartctl -xe ho ottenuto questo:

smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.4.0-141-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Hitachi/HGST Ultrastar 7K4000
Device Model:     HGST HUS724040ALA640
Serial Number:    [REDACTED]
LU WWN Device Id: [REDACTED]
Firmware Version: MFAOAC50
User Capacity:    4,000,787,030,016 bytes [4.00 TB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Tue Jan  1 05:33:21 2019 PST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is:   Unavailable
APM feature is:   Disabled
Rd look-ahead is: Enabled
Write cache is:   Enabled
ATA Security is:  Disabled, NOT FROZEN [SEC1]
Wt Cache Reorder: Enabled

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x82) Offline data collection activity
                    was completed without error.
                    Auto Offline Data Collection: Enabled.
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:        (   24) seconds.
Offline data collection
capabilities:            (0x5b) SMART execute Offline immediate.
                    Auto Offline data collection on/off support.
                    Suspend Offline collection upon new
                    command.
                    Offline surface scan supported.
                    Self-test supported.
                    No 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:    (   1) minutes.
Extended self-test routine
recommended polling time:    ( 543) minutes.
SCT capabilities:          (0x003d) 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          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     PO-R--   100   100   016    -    0
  2 Throughput_Performance  P-S---   138   138   054    -    74
  3 Spin_Up_Time            POS---   100   100   024    -    572
  4 Start_Stop_Count        -O--C-   100   100   000    -    8
  5 Reallocated_Sector_Ct   PO--CK   100   100   005    -    0
  7 Seek_Error_Rate         PO-R--   100   100   067    -    0
  8 Seek_Time_Performance   P-S---   142   142   020    -    25
  9 Power_On_Hours          -O--C-   100   100   000    -    520
 10 Spin_Retry_Count        PO--C-   100   100   060    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    8
192 Power-Off_Retract_Count -O--CK   100   100   000    -    16
193 Load_Cycle_Count        -O--C-   100   100   000    -    16
194 Temperature_Celsius     -O----   166   166   000    -    36 (Min/Max 22/56)
196 Reallocated_Event_Count -O--CK   100   100   000    -    0
197 Current_Pending_Sector  -O---K   100   100   000    -    0
198 Offline_Uncorrectable   ---R--   100   100   000    -    0
199 UDMA_CRC_Error_Count    -O-R--   200   200   000    -    0
                            ||||||_ K auto-keep
                            |||||__ C event count
                            ||||___ R error rate
                            |||____ S speed/performance
                            ||_____ O updated online
                            |______ P prefailure warning

General Purpose Log Directory Version 1
SMART           Log Directory Version 1 [multi-sector log support]
Address    Access  R/W   Size  Description
0x00       GPL,SL  R/O      1  Log Directory
0x01           SL  R/O      1  Summary SMART error log
0x03       GPL     R/O      1  Ext. Comprehensive SMART error log
0x04       GPL     R/O      7  Device Statistics log
0x06           SL  R/O      1  SMART self-test log
0x07       GPL     R/O      1  Extended self-test log
0x08       GPL     R/O      2  Power Conditions log
0x09           SL  R/W      1  Selective self-test log
0x10       GPL     R/O      1  SATA NCQ Queued Error log
0x11       GPL     R/O      1  SATA Phy Event Counters log
0x20       GPL     R/O      1  Streaming performance log [OBS-8]
0x21       GPL     R/O      1  Write stream error log
0x22       GPL     R/O      1  Read stream error log
0x80-0x9f  GPL,SL  R/W     16  Host vendor specific log
0xe0       GPL,SL  R/W      1  SCT Command/Status
0xe1       GPL,SL  R/W      1  SCT Data Transfer

SMART Extended Comprehensive Error Log Version: 1 (1 sectors)
Device Error Count: 2
    CR     = Command Register
    FEATR  = Features Register
    COUNT  = Count (was: Sector Count) Register
    LBA_48 = Upper bytes of LBA High/Mid/Low Registers ]  ATA-8
    LH     = LBA High (was: Cylinder High) Register    ]   LBA
    LM     = LBA Mid (was: Cylinder Low) Register      ] Register
    LL     = LBA Low (was: Sector Number) Register     ]
    DV     = Device (was: Device/Head) Register
    DC     = Device Control Register
    ER     = Error register
    ST     = Status register
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 2 [1] occurred at disk power-on lifetime: 16878 hours (703 days + 6 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 00 0f 00 01 12 cd a0 31 02 00  Error: UNC at LBA = 0x112cda031 = 4610433073

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 10 00 10 00 01 12 cd a0 30 40 00  1d+08:13:30.021  READ FPDMA QUEUED
  61 00 10 00 00 00 01 12 63 a0 30 40 00  1d+08:13:30.021  WRITE FPDMA QUEUED
  60 00 10 00 00 00 01 12 cc a0 30 40 00  1d+08:13:30.017  READ FPDMA QUEUED
  61 00 10 00 10 00 01 12 62 a0 30 40 00  1d+08:13:30.011  WRITE FPDMA QUEUED
  60 00 10 00 00 00 01 12 cb a0 30 40 00  1d+08:13:30.004  READ FPDMA QUEUED

Error 1 [0] occurred at disk power-on lifetime: 10610 hours (442 days + 2 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER -- ST COUNT  LBA_48  LH LM LL DV DC
  -- -- -- == -- == == == -- -- -- -- --
  40 -- 51 01 34 00 01 12 f9 3a fc 02 00  Error: UNC at LBA = 0x112f93afc = 4613290748

  Commands leading to the command that caused the error were:
  CR FEATR COUNT  LBA_48  LH LM LL DV DC  Powered_Up_Time  Command/Feature_Name
  -- == -- == -- == == == -- -- -- -- --  ---------------  --------------------
  60 00 08 00 10 00 00 00 00 01 2c 40 00  2d+01:26:34.533  READ FPDMA QUEUED
  61 00 10 00 08 00 00 57 04 60 00 40 00  2d+01:26:33.675  WRITE FPDMA QUEUED
  60 02 00 00 00 00 01 12 f9 3a 30 40 00  2d+01:26:33.386  READ FPDMA QUEUED
  60 02 00 00 00 00 01 12 f9 38 30 40 00  2d+01:26:33.384  READ FPDMA QUEUED
  60 02 00 00 00 00 01 12 f9 36 30 40 00  2d+01:26:33.382  READ FPDMA QUEUED

SMART Extended Self-test Log Version: 1 (1 sectors)
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%     26741         -

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.

SCT Status Version:                  3
SCT Version (vendor specific):       256 (0x0100)
SCT Support Level:                   1
Device State:                        Active (0)
Current Temperature:                    36 Celsius
Power Cycle Min/Max Temperature:     35/38 Celsius
Lifetime    Min/Max Temperature:     22/56 Celsius
Under/Over Temperature Limit Count:   0/0

SCT Temperature History Version:     2
Temperature Sampling Period:         1 minute
Temperature Logging Interval:        1 minute
Min/Max recommended Temperature:      0/60 Celsius
Min/Max Temperature Limit:           -40/70 Celsius
Temperature History Size (Index):    128 (43)

Index    Estimated Time   Temperature Celsius
  44    2019-01-01 03:26    37  ******************
 ...    ..( 15 skipped).    ..  ******************
  60    2019-01-01 03:42    37  ******************
  61    2019-01-01 03:43    36  *****************
 ...    ..( 20 skipped).    ..  *****************
  82    2019-01-01 04:04    36  *****************
  83    2019-01-01 04:05    35  ****************
 ...    ..(  2 skipped).    ..  ****************
  86    2019-01-01 04:08    35  ****************
  87    2019-01-01 04:09    36  *****************
  88    2019-01-01 04:10    36  *****************
  89    2019-01-01 04:11    35  ****************
 ...    ..( 40 skipped).    ..  ****************
   2    2019-01-01 04:52    35  ****************
   3    2019-01-01 04:53    36  *****************
 ...    ..(  4 skipped).    ..  *****************
   8    2019-01-01 04:58    36  *****************
   9    2019-01-01 04:59    37  ******************
 ...    ..( 30 skipped).    ..  ******************
  40    2019-01-01 05:30    37  ******************
  41    2019-01-01 05:31    36  *****************
  42    2019-01-01 05:32    36  *****************
  43    2019-01-01 05:33    36  *****************

SCT Error Recovery Control:
           Read: Disabled
          Write: Disabled

Device Statistics (GP Log 0x04)
Page  Offset Size        Value Flags Description
0x01  =====  =               =  ===  == General Statistics (rev 2) ==
0x01  0x008  4               8  ---  Lifetime Power-On Resets
0x01  0x018  6      1598892472  ---  Logical Sectors Written
0x01  0x020  6         1386302  ---  Number of Write Commands
0x01  0x028  6      3655763419  ---  Logical Sectors Read
0x01  0x030  6         7494155  ---  Number of Read Commands
0x03  =====  =               =  ===  == Rotating Media Statistics (rev 1) ==
0x03  0x008  4             520  ---  Spindle Motor Power-on Hours
0x03  0x010  4             520  ---  Head Flying Hours
0x03  0x018  4              16  ---  Head Load Events
0x03  0x020  4               0  ---  Number of Reallocated Logical Sectors
0x03  0x028  4               0  ---  Read Recovery Attempts
0x03  0x030  4               0  ---  Number of Mechanical Start Failures
0x04  =====  =               =  ===  == General Errors Statistics (rev 1) ==
0x04  0x008  4               0  ---  Number of Reported Uncorrectable Errors
0x04  0x010  4               0  ---  Resets Between Cmd Acceptance and Completion
0x05  =====  =               =  ===  == Temperature Statistics (rev 1) ==
0x05  0x008  1              37  ---  Current Temperature
0x05  0x010  1              35  N--  Average Short Term Temperature
0x05  0x018  1               -  N--  Average Long Term Temperature
0x05  0x020  1              56  ---  Highest Temperature
0x05  0x028  1              22  ---  Lowest Temperature
0x05  0x030  1              41  N--  Highest Average Short Term Temperature
0x05  0x038  1              25  N--  Lowest Average Short Term Temperature
0x05  0x040  1               -  N--  Highest Average Long Term Temperature
0x05  0x048  1               -  N--  Lowest Average Long Term Temperature
0x05  0x050  4               0  ---  Time in Over-Temperature
0x05  0x058  1              60  ---  Specified Maximum Operating Temperature
0x05  0x060  4               0  ---  Time in Under-Temperature
0x05  0x068  1               0  ---  Specified Minimum Operating Temperature
0x06  =====  =               =  ===  == Transport Statistics (rev 1) ==
0x06  0x008  4              60  ---  Number of Hardware Resets
0x06  0x010  4              13  ---  Number of ASR Events
0x06  0x018  4               0  ---  Number of Interface CRC Errors
                                |||_ C monitored condition met
                                ||__ D supports DSN
                                |___ N normalized value

SATA Phy Event Counters (GP Log 0x11)
ID      Size     Value  Description
0x0001  2            0  Command failed due to ICRC error
0x0002  2            0  R_ERR response for data FIS
0x0003  2            0  R_ERR response for device-to-host data FIS
0x0004  2            0  R_ERR response for host-to-device data FIS
0x0005  2            0  R_ERR response for non-data FIS
0x0006  2            0  R_ERR response for device-to-host non-data FIS
0x0007  2            0  R_ERR response for host-to-device non-data FIS
0x0009  2            1  Transition from drive PhyRdy to drive PhyNRdy
0x000a  2            2  Device-to-host register FISes sent due to a COMRESET
0x000b  2            0  CRC errors within host-to-device FIS
0x000d  2            0  Non-CRC errors within host-to-device FIS

Come puoi vedere, le ore di accensione dell'unità sono 520 (il che è preciso, dato che l'ho avuto per meno di un mese), ma i due errori dicono che si sono verificati a 10610 ore e 16878 ore - ovviamente impossibile.

Cosa sta succedendo qui? Gli errori sono reali? Preoccupante? Potrebbe esserci una sorta di "manomissione del contachilometri" in corso qui dal mio venditore?

Aggiornare

(Lo avrei avuto molto prima, ma HGST Western Digital :/è davvero inutile (perché forniscono i numeri di serie delle unità OEM se non hanno intenzione di conservare alcuna informazione su di loro?) E rallentano anche la risposta.)

Quando le avevo installate, avevo notato che non avevano le date di fabbricazione sulle etichette come le mie vecchie, ma l'ho solo detto al produttore che non le stampava più e non ci ho pensato più ... Ho visto la grande risposta di Deltik. Non mi era venuto in mente che questi sarebbero (o potrebbero effettivamente) essere cancellati.

Dopo che i miei tentativi di ottenere la parola ufficiale dal produttore (il nuovo proprietario) sono falliti, li ho tirati tutti e ho cercato il mio scanner piano su di loro, alle massime impostazioni. Facendo il vecchio zoom-e-miglioramento, sono stato in grado di individuare prove della cancellazione di ognuno. Ecco uno degli esempi più facili da leggere:

(Originale 5717 × 8117px, 64,0 MB .png omesso per pietà)

Panoramica .jpg ridotta, redatta:

Risoluzione originale ritagliata .png della scena del crimine (nell'angolo in alto a destra dell'etichetta):

Probabilmente il più attento di te può già leggerlo, ma ecco un rettangolo di livelli automatici:

Quindi si Tutte le unità hanno marcature sottili rimaste da questo tentativo deliberato di frode, e sono tutte da marzo / aprile / maggio 2015. Non è proprio il significato di "nuovo" alla fine di novembre 2018.

Inoltre, come alcuni degli altri commentatori, sono piuttosto scioccato dal fatto che SMART possa essere sovvertito in questo modo. La maggior parte del punto non è andata se può essere ripristinata?

Lo perseguirò ulteriormente, credimi. Guarda questo spazio.

Penso che il tuo sospetto di "manomissione del contachilometri" sia corretto, ed è possibile . Gli errori registrati sono probabilmente reali e sicuramente preoccupanti perché indicano settori danneggiati alla lettura. Il disco è stato probabilmente cancellato prima di farsi strada, quindi quei settori danneggiati sono stati probabilmente rimappati.

Chiunque ti abbia venduto il disco rigido ha ripristinato gli attributi SMART per farlo sembrare un nuovo disco rigido.

aneddoto

Il 25 luglio 2015 ho acquistato sei dischi rigidi molto simili da goHardDrive.com. Quando ho controllato tutti i dischi, ho riscontrato quasi gli stessi sintomi:

root@box52:~# smartctl -a /dev/sdb
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.0-57-generic] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Hitachi Deskstar 7K2000
Device Model:     Hitachi HDS722020ALA330
Serial Number:    JK1101B9G7U8NF
LU WWN Device Id: 5 000cca 222c38d7e
Firmware Version: JKAOA3MA
User Capacity:    2,000,398,934,016 bytes [2.00 TB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    7200 rpm
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 2.6, 3.0 Gb/s
Local Time is:    Thu Jul 30 13:57:13 2015 CDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF READ SMART DATA SECTION ===
SMART STATUS RETURN: incomplete response, ATA output registers missing
SMART overall-health self-assessment test result: PASSED
Warning: This result is based on an Attribute check.

General SMART Values:
Offline data collection status:  (0x80) Offline data collection activity
                                        was never started.
                                        Auto Offline Data Collection: Enabled.
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:                (23653) seconds.
Offline data collection
capabilities:                    (0x5b) SMART execute Offline immediate.
                                        Auto Offline data collection on/off support.
                                        Suspend Offline collection upon new
                                        command.
                                        Offline surface scan supported.
                                        Self-test supported.
                                        No 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:        (   1) minutes.
Extended self-test routine
recommended polling time:        ( 394) minutes.
SCT capabilities:              (0x003d) 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     0x000b   100   100   016    Pre-fail  Always       -       0
  2 Throughput_Performance  0x0005   100   100   054    Pre-fail  Offline      -       0
  3 Spin_Up_Time            0x0007   100   100   024    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0012   100   100   000    Old_age   Always       -       1
  5 Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail  Always       -       2
  7 Seek_Error_Rate         0x000b   100   100   067    Pre-fail  Always       -       0
  8 Seek_Time_Performance   0x0005   100   100   020    Pre-fail  Offline      -       0
  9 Power_On_Hours          0x0012   100   100   000    Old_age   Always       -       0
 10 Spin_Retry_Count        0x0013   100   100   060    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       1
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       1
193 Load_Cycle_Count        0x0012   100   100   000    Old_age   Always       -       1
194 Temperature_Celsius     0x0002   206   206   000    Old_age   Always       -       29 (Min/Max 25/29)
196 Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       2
197 Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0008   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       0

SMART Error Log Version: 1
ATA Error Count: 2
        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 2 occurred at disk power-on lifetime: 31311 hours (1304 days + 15 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 ff 01 58 5d 08  Error: UNC 255 sectors at LBA = 0x085d5801 = 140335105

  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 00 00 00 58 5d 40 00   9d+05:13:00.528  READ DMA EXT
  25 00 00 00 57 5d 40 00   9d+05:12:59.801  READ DMA EXT
  25 00 00 00 56 5d 48 00   9d+05:12:59.797  READ DMA EXT
  25 00 00 00 55 5d 48 00   9d+05:12:59.794  READ DMA EXT
  25 00 00 00 54 5d 48 00   9d+05:12:59.789  READ DMA EXT

Error 1 occurred at disk power-on lifetime: 31243 hours (1301 days + 19 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 ff 01 58 5d 08  Error: UNC 255 sectors at LBA = 0x085d5801 = 140335105

  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 00 00 00 58 5d 40 00  41d+18:29:24.394  READ DMA EXT
  25 00 00 00 57 5d 48 00  41d+18:29:24.388  READ DMA EXT
  25 00 00 00 56 5d 40 00  41d+18:29:24.383  READ DMA EXT
  25 00 00 00 55 5d 40 00  41d+18:29:24.376  READ DMA EXT
  25 00 00 00 54 5d 40 00  41d+18:29:24.371  READ DMA EXT

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%         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.

Se non fosse stato per gli errori SMART che hanno dimenticato di cancellare o non potevano cancellare, sarei stato convinto che i dischi che avevo acquistato fossero nuovi.

Sospettoso, ho telefonato a Hitachi Global Storage Technologies e ho appreso che almeno due dei dischi avevano le loro garanzie attivate il 24 settembre 2010, quasi cinque anni prima di acquistarle. La garanzia del produttore è scaduta 3 anni dopo.

Nel mio reclamo al venditore, ho scritto:

Cancellare i valori dell'attributo SMART è come azzerare il contachilometri in un'auto. Un grosso problema con la cancellazione degli attributi SMART è che gli utenti finali come me non hanno modo di identificare se i settori sono stati riallocati. Potrebbero esserci ovunque settori non riallocati a tutti i settori di riserva riallocati. Considerando che queste unità hanno quasi cinque anni con oltre il 73,7% delle volte in cui almeno una delle unità è stata accesa, ci sono molto probabilmente settori rimappati che non conosco.

goHardDrive.com mi ha venduto almeno un disco rigido difettoso, ha consapevolmente cancellato la storia operativa di tutti e sei i dischi rigidi e non ha rivelato la natura usata di nessuno dei dischi rigidi al momento della vendita.

Ho anche fatto una fotografia dei dischi rigidi:

Il disco rigido nella parte inferiore dell'immagine è un disco di riferimento dello stesso produttore.

Si noti che il disco di riferimento ha APR-2012stampato su di esso, mostrando quando è stato prodotto. La data di produzione è stata rimossa dai sei dischi che ho comprato, ma non abbastanza bene. Guarda il disco centrale, dove puoi distinguerlo leggermente AUG-2010.

Questo sicuramente conferma la storia dei dischi: ho acquistato dischi rigidi usati che avevano il loro "contachilometri" ripristinato.

Alla fine, il venditore ha accettato la mia richiesta di reso e ho restituito tutti i dischi per un rimborso completo.

Fai attenzione ai dischi rigidi che acquisti! È bene che tu li abbia controllati per eventuali segni di usura residua.