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

David Madsen david.madsen at gmail.com
Fri Jul 25 21:54:23 UTC 2014


On Wed, Jul 23, 2014 at 6:46 AM, James Bailey <paradoxbound at gmail.com> wrote:
>
> WD Green don't play nicely with Linux avoid them
>
> https://bbs.archlinux.org/viewtopic.php?id=73573
>
> Backblaze are one of the few companies to publish detailed real world analisys of HD usage and failure rates and most of their drives are ordinary consumer grade drives. Read the articles and take your pick.
>
> http://blog.backblaze.com/2014/01/21/what-hard-drive-should-i-buy/
>
> Jim


I've been using WD Green drives for recording storage for years, since
they had the best power and capacity profile at the time.  While the
default configuration of the idle park is very aggressive, the drive
itself is rated for millions of load/unload cycles. An educated
consumer also can easily adjust this if it is of concern with the
already mentioned tools.  I think it's wrong to state that WD Green
drives "don't play nice with Linux" since it has nothing to do with
Linux at all.  The aggressive parking would behave the same in a
similarly configured system running Windows or <Your OS of Choice>.

Here's some data from my 3TB green that has been running for quite
some time.  The Load_Cycle_Count is less then the number of hours the
drive has been running.

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Caviar Green (AF, SATA 6Gb/s)
Device Model:     WDC WD30EZRX-00MMMB0

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   200   200   051    Pre-fail
Always       -       0
  3 Spin_Up_Time            0x0027   160   149   021    Pre-fail
Always       -       8991
  4 Start_Stop_Count        0x0032   100   100   000    Old_age
Always       -       53
  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   073   073   000    Old_age
Always       -       19797
 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       -       47
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age
Always       -       33
193 Load_Cycle_Count        0x0032   196   196   000    Old_age
Always       -       13919
194 Temperature_Celsius     0x0022   113   109   000    Old_age
Always       -       39
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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