[mythtv-users] 3tb drive question

[Stephen Worthington]

On Tue, 31 Dec 2013 14:59:04 +0100, you wrote:

>2013/12/31 Stephen Worthington <stephen_agent at jsw.gen.nz>:
>> On Tue, 31 Dec 2013 10:53:11 +0100, you wrote:
>>
>>>Hello,
>>>
>>>How could I check the number of head parks of my drive? Any tool for Linux?
>>>
>>>Thanks and best regards.
>>
>> Use smartctl.
>
>Thanks,
>
>I check this way:
>
># smartctl -A /dev/sdb
>smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-4-amd64] (local build)
>Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net
>
>=== START OF READ SMART DATA SECTION ===
>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   199   199   051    Pre-fail
>Always       -       435
>  3 Spin_Up_Time            0x0027   253   163   021    Pre-fail
>Always       -       1216
>  4 Start_Stop_Count        0x0032   100   100   000    Old_age
>Always       -       571
>  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   070   070   000    Old_age
>Always       -       22446
> 10 Spin_Retry_Count        0x0032   100   100   000    Old_age
>Always       -       0
> 11 Calibration_Retry_Count 0x0032   100   100   000    Old_age
>Always       -       0
> 12 Power_Cycle_Count       0x0032   100   100   000    Old_age
>Always       -       561
>192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age
>Always       -       250
>193 Load_Cycle_Count        0x0032   191   191   000    Old_age
>Always       -       29250
>194 Temperature_Celsius     0x0022   121   100   000    Old_age
>Always       -       29
>196 Reallocated_Event_Count 0x0032   200   200   000    Old_age
>Always       -       0
>197 Current_Pending_Sector  0x0032   200   200   000    Old_age
>Always       -       52
>198 Offline_Uncorrectable   0x0030   200   200   000    Old_age
>Offline      -       3
>199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age
>Always       -       0
>200 Multi_Zone_Error_Rate   0x0008   200   198   000    Old_age
>Offline      -       97
>
>The "Load_Cycle_Count" is 29250, is this well?
>
>Best regards.

Yes, 29250 cycles is fine for a drive that has been running for 2.5
years.  You should run the command again several times over a day or
so and see if it is incrementing very much.  On my old Windows Vista
PC, when I did that, I found one of my WD Black drives had its counter
incrementing every few seconds.  It had got up to nearly 300,000
cycles, which is way too high and is not unlikely to cause an early
death for that drive.  It seems that Vista was accessing the drive
often - but mostly just after it had unloaded the heads.  After I used
the idle time utility to change the unload timeout, it has gone back
to doing only a few more load cycles and is reading 302528 today.