[mythtv-users] Anyone using SSD for long term storage?

[Ian Evans]

On Wed, Jul 23, 2014 at 12:41 PM, John Drescher <drescherjm at gmail.com>
wrote:

> >>BTW, what causes a drive to just disappear until a hard reboot?
> >
> > All sorts of things can cause that.  You can blame a passing cosmic
> > ray, if you feel like it.  A cosmic ray hit in many types of buffer
> > circuit can cause the circuit to lock into a single state and be
> > unable to switch states until the substrate power is removed for a
> > while.  If the buffer is one in the path that commands take to the
> > disk, a stuck bit like that can easily stop it responding at all until
> > a power cycle.  Static electricity can do the same, either a discharge
> > or a field effect from moving something too near that has a big charge
> > on it.  So a drive that stops responding once like that may never do
> > it again.  Or it may be a sign of a real problem and it is going to do
> > it again very soon.
> >
>
> Take a look at the SMART raw data. Are there any pending or offline
> uncorrectable sectors? How many reallocated sectors? Reallocation
> events? UltraDMA ECC errors?
>
>

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   253   253   021    Pre-fail
Always       -       1025
  4 Start_Stop_Count        0x0032   100   100   000    Old_age
Always       -       57
  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   061   061   000    Old_age
Always       -       28498
 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       -       55
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age
Always       -       31
193 Load_Cycle_Count        0x0032   001   001   000    Old_age
Always       -       1007725
194 Temperature_Celsius     0x0022   113   105   000    Old_age
Always       -       37
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      -       0
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      -       0
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