Offline_Uncorrectable, rma?

WD Internal Drives Desktop & Mobile Drives
1

Hey,

One of my wd20ezrx report an offline uncorrectable sector. I made a smartctl long test and it report that error occur on lba 1955467320

here is a smartctl info from this drive :

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 - 228
  3 Spin_Up_Time                        0x0027 186 178 021 Pre-fail Always - 5658
  4 Start_Stop_Count                   0x0032 100 100 000 Old_age Always - 68
  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 088 088 000 Old_age Always - 9290
 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 - 50
192 Power-Off_Retract_Count   0x0032 200 200 000 Old_age Always - 37
193 Load_Cycle_Count              0x0032 200 200 000 Old_age Always - 39
194 Temperature_Celsius         0x0022 116 109 000 Old_age Always - 34
196 Reallocated_Event_Count  0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector    0x0032 200 200 000 Old_age Always - 1
198 Offline_Uncorrectable          0x0030 200 200 000 Old_age Offline - 1
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 - 1

here is the test scan result :

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 50% 9276 1955467320

2 Short offline        Completed without error 00% 8283 -

3 Short offline        Completed without error 00% 3141 -

i tried to read the faut sector with dd to confirm that and sector between lba 1955467320 and 1955467327 are faultly

dd if=/dev/sdf of=/dev/null count=7 skip=1955467320
dd: lecture de « /dev/sdf »: Erreur d’entrée/sortie
0+0 enregistrements lus
0+0 enregistrements écrits
0 octet (0 B) copié, 40,8817 s, 0,0 kB/s

sectors around this area are ok :

dd if=/dev/sdf of=/dev/null count=1 skip=1955467319
1+0 enregistrements lus
1+0 enregistrements écrits
512 octets (512 B) copiés, 0,0170647 s, 30,0 kB/s

dd if=/dev/sdf of=/dev/null count=1 skip=1955467328
1+0 enregistrements lus
1+0 enregistrements écrits
512 octets (512 B) copiés, 0,0204569 s, 25,0 kB/s

i tried to write on this sector fo force reallocation but it seems it dont work ?!?

dd if=/dev/zero of=/dev/sdf count=7 seek=1955467320
dd: écriture vers « /dev/sdf »: Erreur d’entrée/sortie
1+0 enregistrements lus
0+0 enregistrements écrits
0 octet (0 B) copié, 20,3865 s, 0,0 kB/s

so i have a faulty disk with 7 uncorrectable sectors in my mdadm raid5 5 drive bay.

should i go for rma with it ?

Thanks for advice :wink:

2

Please install hard disk sentinel and let us see the health and performance please

3

HDD Device 5: /dev/sdf

HDD Model ID : WDC WD20EZRX-
HDD Serial No: WD-******************
HDD Revision : 80.00A80
HDD Size : 1907729 MB
Interface : S-ATA II
Temperature : 34 °C
Highest Temp.: 41 °C
Health : 98 %
Performance : 100 %
Power on time: 387 days, 7 hours
Est. lifetime: more than 1000 days

4

I think WD only recognize data from its DLG tool. Looks like "1"s are not qualified for warranty.

5

i agree that 1 sector reported as bad is not really a problem. (even 7 sector are unreadable on dik with dd)

however i dont understand why these bad sectors are not remapped when i tried to zeroes em ?

Is there any spare sector on this disk for remap ?

6

ok got it.

I write over them  with flag “oflag=direct” and all sectors no longer return io error

however, and i think is a good new, sector haven"t been remap.

196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 1

i think it was only a logical bad block and not a physical bad block and write over it did the trick. i have to launch an offline test to confirm that or not :) 

7

Great. I wouldnt exchange the HDD if it stays stable…

8

hotshuff wrote:

i agree that 1 sector reported as bad is not really a problem.

If you run the DLG Tool, you will see what SMART attributes qualify for RMA and what do not. Those you listed as 1 (not referring to 1 bad sector but am actually referring to Current_Pending_Sector, Offline_Uncorrectable and Multi_Zone_Error_Rate ) are not qualified.