Re: Used HDs

[Paul Ripke <stix%stix.id.au@localhost>]

YMMV :)

My home server has a couple of these, mirrored:

Model Family:     Western Digital Green
Device Model:     WDC WD20EARX-00PASB0

This one is still mostly ok after 10+ years active:

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   172   168   021    Pre-fail  Always       -       6375
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       55
  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   001   001   000    Old_age   Always       -       95063
...
200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   Offline      -       5

This one is starting to run a little slow:

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       -       10
  3 Spin_Up_Time            0x0027   169   162   021    Pre-fail  Always       -       6550
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       63
  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   001   001   000    Old_age   Always       -       95067
...
200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   Offline      -       10

That machine only gets powered down for the occasional cleaning to get
the dust out of the heat sinks, power outages, and occasionally replacing
bits, like just now replacing the dying power supply.

I'm currently considering replacing both - they're not exactly
performant drives.

My experience is that drives tend to either fail in the first year,
or survive for a number of years. And they also don't particularly
mind running hot; 45C is still ok.

Temperature, infant mortality and the lack of load as a relevant
factor seems born out in the industry:
https://static.googleusercontent.com/media/research.google.com/en//archive/disk_failures.pdf

-- 
Paul Ripke
"Great minds discuss ideas, average minds discuss events, small minds
 discuss people."
-- Disputed: Often attributed to Eleanor Roosevelt. 1948.