My parity drive (WDC_WD2002FYPS-0_WD-WCAVY1999906) is constantly getting pending sectors and offline unreadable,

labeled red in unmenu smart view. They either go away by themselves, or they are forced (by me rebuilding the parity drive).

 

The parity drive is the only one with the red smart issues.

 

So far no blocks has been re-allocated.

This is the current status of my parity disk after a new rebuild this night:

 

Should I replace it?

 

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      -      2377

  3 Spin_Up_Time            0x0027  151  148  021    Pre-fail  Always      -      9433

  4 Start_Stop_Count        0x0032  100  100  000    Old_age  Always      -      45

  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  072  072  000    Old_age  Always      -      21033

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      -      44

192 Power-Off_Retract_Count 0x0032  200  200  000    Old_age  Always      -      11

193 Load_Cycle_Count        0x0032  150  150  000    Old_age  Always      -      151269

194 Temperature_Celsius    0x0022  124  114  000    Old_age  Always      -      28

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  187  000    Old_age  Offline      -      1

 

Thanks in advance for any replies.

 

Since I do not see any re-allocated sectors (implying they are all being re-written in place) I would double-check the power supply feeding that disk.  It would seem to me that perhaps the problem is not when reading, but the written contents are not reliable when read.  Poor power would cause that type of issue.

the disk sits in a supermicro hotswap bay with 4 other disks, and they are fine.

They are fed from 850W corsair power supply with one 12V rail.

 

Though I have 3 additional hotswap bays in the same machine, of which 2 are unpopulated.

I can try and move the disk to one of them, rebuild, and see if anything changes.

I've had to re-mount the drive in a tray before because it wasn't making a good enough connection when the tray was plugged in.  You could also try pushing harder when you insert the tray.  You could also test the drive connected directly to your controller not in the cage.

That LCC number looks a little high, no?

That LCC number looks a little high, no?

It is only 7.19+ times the power on hours so not real bad yet.  If it was 20 times the power on hours then I would worry.  It also depends on how they were aquired.  If it was 20+ in the begining and is at most 2 per power on hour now I wouldn't worry.  If it was 2 at the begining and is now at a 20+ hour rate now then that is bad.