Read failure using SMART diagnostic tool

Hi all,

I have a 2GB World Edition white lights and I have run the SMART diagnostic tool on it. The disk passes the diagnostic but when I run the tests ‘short’ or ‘long’, I get some errors (read failure):

SMART Self-test log structure revision number 1

Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error

# 1  Extended offline    Completed: read failure     90%      2824         469794744

# 2  Short offline       Completed: read failure     90%      2823         469794744

 

This is the log of the SMART tool:

  

smartctl -a -q noserial -d sat /dev/sda

smartctl version 5.38 [arm-unknown-linux-gnu] Copyright © 2002-8 Bruce Allen

Home page is http://smartmontools.sourceforge.net/

 

=== START OF INFORMATION SECTION ===

Device Model:     WDC WD20EARS-00MVWB0

Firmware Version: 51.0AB51

User Capacity:    2,000,398,934,016 bytes

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:    Sun Jun 10 21:26:16 2012 CEST

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:                 (37560) 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:              (0x3035) 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       -       0

  3 Spin_Up_Time            0x0027   169   166   021    Pre-fail  Always       -       6541

  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       296

  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       2

  7 Seek_Error_Rate         0x002e   200   200   000    Old_age   Always       -       0

  9 Power_On_Hours          0x0032   097   097   000    Old_age   Always       -       2824

 10 Spin_Retry_Count        0x0032   100   100   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       -       8

192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       4

193 Load_Cycle_Count        0x0032   153   153   000    Old_age   Always       -       143691

194 Temperature_Celsius     0x0022   100   098   000    Old_age   Always       -       50

196 Reallocated_Event_Count 0x0032   199   199   000    Old_age   Always       -       1

197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       2

198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline      -       2

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      -       6

 

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  Extended offline    Completed: read failure       90%      2824         469794744

# 2  Short offline       Completed: read failure       90%      2823         469794744

# 3  Short offline       Completed: read failure       90%      2814         469794744

# 4  Short offline       Completed: read failure       90%      2775         469794744

# 5  Short offline       Completed: read failure       90%      2774         469794744

# 6  Short offline       Completed: read failure       90%      2774         469794744

 

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.

 

What can I do ?

Thanks

Make sure the data gets backed up to another drive and monitor this behavior

it might be time to replace 

This unit has been replaced three month ago. Moreover, it is a single drive unit (no RAID capability).
There is a way to repair these issues instead of replacing the unit?
Thanks