Re: Confirmed premature hard disk failure

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Krzysztof Halasa wrote:
Paulo Cavalcanti <promac@xxxxxxxxx> writes:

Here, there is a list of the affected hardware:

https://wiki.ubuntu.com/DanielHahler/Bug59695#Affected%20hardware

I wonder if my disk does qualify?
Model Family:     Hitachi Travelstar 80GN family
Device Model:     IC25N020ATMR04-0
-B 128 by default (disk's default, there is no BIOS). Changed now to 255.

ID# ATTRIBUTE_NAME          FLAG   VALUE WORST THRESH TYPE     UPDATED WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000b 100   100   062    Pre-fail Always  -       0
  2 Throughput_Performance  0x0005 105   105   040    Pre-fail Offline -       5882
  3 Spin_Up_Time            0x0007 192   192   033    Pre-fail Always  -       1
  4 Start_Stop_Count        0x0012 100   100   000    Old_age  Always  -       859
  5 Reallocated_Sector_Ct   0x0033 100   100   005    Pre-fail Always  -       0
  7 Seek_Error_Rate         0x000b 100   100   067    Pre-fail Always  -       0
  8 Seek_Time_Performance   0x0005 118   118   040    Pre-fail Offline -       37
  9 Power_On_Hours          0x0012 037   037   000    Old_age  Always  -       27788
 10 Spin_Retry_Count        0x0013 100   100   060    Pre-fail Always  -       0
 12 Power_Cycle_Count       0x0032 100   100   000    Old_age  Always  -       504
191 G-Sense_Error_Rate      0x000a 100   100   000    Old_age  Always  -       0
192 Power-Off_Retract_Count 0x0032 100   100   000    Old_age  Always  -       52
193 Load_Cycle_Count        0x0012 001   001   000    Old_age  Always  -       5178492
194 Temperature_Celsius     0x0002 141   141   000    Old_age  Always  -       39 (Lifetime Min/Max 13/59)
196 Reallocated_Event_Count 0x0032 100   100   000    Old_age  Always  -       2
197 Current_Pending_Sector  0x0022 100   100   000    Old_age  Always  -       1
198 Offline_Uncorrectable   0x0008 100   100   000    Old_age  Offline -       0
199 UDMA_CRC_Error_Count    0x000a 200   200   000    Old_age  Always  -       0

The disk is entirely readable (though it had 2 bad sectors, corrected by
writing to them).

The 600,000 max cycle count seems a bit underestimated, though (fingers
crossed) :-)

Usually, the reallocated sector count is the one to watch and that seems to be fine with your disk.

SMART in general tends to be a very bad predictor of drive failures - most disks fail without showing up (i.e., one drive head will go bad) - or it causes false positives which end in you pulling a reasonable drive.

Sectors that clean up without reallocation after a write are not really bad, that is pretty normal.

Failed writes are a reasonably good predictor of impending doom since almost all drives will work really hard to retry that kind of IO (note that failed writes as you are bouncing the drive, or due to failed cables are both exceptions).

I would not worry about this disk more than usual,

ric

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