WD Red LCC

[tstorzuk]

A little help please,

I've just checked my WD Red drives in my other server to check the Load Cycle Counts, and one seems high;

Code:

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   178   178   021    Pre-fail  Always       -       8058
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       20
  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   098   098   000    Old_age   Always       -       1996
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       -       20
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       18
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       1151
194 Temperature_Celsius     0x0022   120   114   000    Old_age   Always       -       32
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   100   253   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

How do I calculate if this is good or bad? Does someone have a formula that I can use to figure it out?

 

[Bidule0hm]

It's less than one LCC per hour, no need to worry ;)

 

[DrKK]

But for the record, that *IS* higher than I would expect on WD reds. After almost 2 years on these reds, I think I have 25 load cycles :)

Are you trying to use some kind of drive-spindown power saving mode? (Don't do that)

 

[tstorzuk]

But for the record, that *IS* higher than I would expect on WD reds. After almost 2 years on these reds, I think I have 25 load cycles :)

Are you trying to use some kind of drive-spindown power saving mode? (Don't do that)

I had them all on the same (from the GUI), Storage > View Disks > Advanced Power Management setting of "Level 128, minimum power usage without Standby (no spindown)". But they all were on the same setting (8 drives in total). I only today changed them all to Disabled after reading through Cyberjock's How-to Guide; Hacking WD Greens(and Reds) with WDIDLE3.exe

This one drive is the only one that had substantially higher LCC readings, and I wanted to calculate what was happening. Hence the question if someone had an actually calculation that I could use ([a + b] / c = something relevant) to see for myself if something was amuck.

 

[Something]

First drive

Code:

 9 Power_On_Hours          0x0032   092   092   000    Old_age   Always       -       5958
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       92

Second drive

Code:

9 Power_On_Hours          0x0032   098   098   000    Old_age   Always       -       1530
193 Load_Cycle_Count        0x0032   200   200   000    Old_age   Always       -       1791

I'd say tstorzuk has it right, you should use wdidl3. I need to as well tomorrow.

 

[Ericloewe]

It's higher than expected, so I'd keep an eye on it. I'd definitely not jump in and change the idle timer yet - at this rate, there won't be a problem.

68+ years for the drive to exceed its LCC rating.

 

[Something]

Do you think it would be a good idea to merely use wdidl3 to check what the idle timers are?

 

[Ericloewe]

Do you think it would be a good idea to merely use wdidl3 to check what the idle timers are?

Can't hurt, but I'm not sure I'd bother. The bad batch from December 2013 had them set to 8s, like the Greens.

 

[Something]

Mmm, i'll keep an eye on her cheers. I'll make sure to check the settings with the WD Reds I have arriving shortly. That's going to be a fun little mess!