I was running a parity check overnight. When I came back to it, this morning, the check completed with 768 errors on Disk 5 in my array. I was able to recover a portion of the syslog, but, not all

 

I also ran a SMART report:

 

smartctl 6.2 2013-07-26 r3841 [i686-linux-3.9.11p-unRAID] (local build)

Copyright © 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org

 

=== START OF INFORMATION SECTION ===

Device Model:    WDC WD40EFRX-68WT0N0

Serial Number:    WD-WCC4E1711392

LU WWN Device Id: 5 0014ee 2b4d397aa

Firmware Version: 80.00A80

User Capacity:    4,000,787,030,016 bytes [4.00 TB]

Sector Sizes:    512 bytes logical, 4096 bytes physical

Rotation Rate:    5400 rpm

Device is:        Not in smartctl database [for details use: -P showall]

ATA Version is:  ACS-2 (minor revision not indicated)

SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)

Local Time is:    Fri May  8 13:42:03 2015 CDT

SMART support is: Available - device has SMART capability.

SMART support is: Enabled

 

=== START OF READ SMART DATA SECTION ===

SMART overall-health self-assessment test result: PASSED

 

General SMART Values:

Offline data collection status:  (0x00) Offline data collection activity

                                        was never started.

                                        Auto Offline Data Collection: Disabled.

Self-test execution status:      (  0) The previous self-test routine completed

                                        without error or no self-test has ever

                                        been run.

Total time to complete Offline

data collection:                (51840) seconds.

Offline data collection

capabilities:                    (0x7b) SMART execute Offline immediate.

                                        Auto Offline data collection on/off support.

                                        Suspend Offline collection upon new

                                        command.

                                        Offline surface scan supported.

                                        Self-test supported.

                                        Conveyance Self-test supported.

                                        Selective Self-test supported.

SMART capabilities:            (0x0003) Saves SMART data before entering

                                        power-saving mode.

                                        Supports SMART auto save timer.

Error logging capability:        (0x01) Error logging supported.

                                        General Purpose Logging supported.

Short self-test routine

recommended polling time:        (  2) minutes.

Extended self-test routine

recommended polling time:        ( 518) minutes.

Conveyance self-test routine

recommended polling time:        (  5) minutes.

SCT capabilities:              (0x703d) SCT Status supported.

                                        SCT Error Recovery Control supported.

                                        SCT Feature Control supported.

                                        SCT Data Table supported.

 

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      -      67

  3 Spin_Up_Time            0x0027  182  178  021    Pre-fail  Always      -      7866

  4 Start_Stop_Count        0x0032  099  099  000    Old_age  Always      -      1050

  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  091  091  000    Old_age  Always      -      6829

10 Spin_Retry_Count        0x0032  100  100  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      -      8

192 Power-Off_Retract_Count 0x0032  200  200  000    Old_age  Always      -      2

193 Load_Cycle_Count        0x0032  199  199  000    Old_age  Always      -      3190

194 Temperature_Celsius    0x0022  125  114  000    Old_age  Always      -      27

196 Reallocated_Event_Count 0x0032  200  200  000    Old_age  Always      -      0

197 Current_Pending_Sector  0x0032  200  200  000    Old_age  Always      -      2

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  100  253  000    Old_age  Offline      -      0

 

SMART Error Log Version: 1

No Errors Logged

 

SMART Self-test log structure revision number 1

No self-tests have been logged.  [To run self-tests, use: smartctl -t]

 

 

SMART Selective self-test log data structure revision number 1

SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS

    1        0        0  Not_testing

    2        0        0  Not_testing

    3        0        0  Not_testing

    4        0        0  Not_testing

    5        0        0  Not_testing

Selective self-test flags (0x0):

  After scanning selected spans, do NOT read-scan remainder of disk.

If Selective self-test is pending on power-up, resume after 0 minute delay.

 

 

Is this disk dead? Can I rebuild this disk from parity, or just replace it? I haven't been able to validate if there was a cabling failure yet. While I suppose that's possible, I'm still unsure how I'd proceed to rebuild this disk from parity, without actualy replacing it. Doing a New Config seems to be ill-advised, both on the tool page itself, as well as in this Forum. So, what should I be doing next?

 

Thanks For Your Time!

unRAIDsyslog050815.txt

http://lime-technology.com/wiki/index.php/Troubleshooting#Resolving_a_Pending_Sector