Just recently one of my 4TB Toshiba HDD suddenly prompt Reallocated Sector CT from 0 to 5 then to 8, 16, 96, 104 and 112.

This drive just did a preclear and was successfully completed with no error just the Reallocate Sector CT remain at 112 and Reallocated_Event_Count 14.

Since preclear successful is this drive still good to used?preclear_disk_2015033100081_32492.txt

 

#################################################################################################### # Unraid Server Preclear of disk 2015033100081 # # Cycle 1 of 1, partition start on sector 64. # # # # Step 1 of 5 - Pre-read verification: [8:06:26 @ 137 MB/s] SUCCESS # # Step 2 of 5 - Zeroing the disk: [8:06:23 @ 137 MB/s] SUCCESS # # Step 3 of 5 - Writing Unraid's Preclear signature: SUCCESS # # Step 4 of 5 - Verifying Unraid's Preclear signature: SUCCESS # # Step 5 of 5 - Post-Read verification: [8:06:29 @ 137 MB/s] SUCCESS # # # # # # # #################################################################################################### # Cycle elapsed time: 24:19:25 | Total elapsed time: 24:19:26 # #################################################################################################### #################################################################################################### # S.M.A.R.T. Status (device type: default) # # # # ATTRIBUTE INITIAL CYCLE 1 STATUS # # Reallocated_Sector_Ct 112 112 - # # Power_On_Hours 30825 30849 Up 24 # # Temperature_Celsius 31 36 Up 5 # # Reallocated_Event_Count 14 14 - # # Current_Pending_Sector 0 0 - # # Offline_Uncorrectable 0 0 - # # UDMA_CRC_Error_Count 750 750 - # # # # # #################################################################################################### # # #################################################################################################### --> ATTENTION: Please take a look into the SMART report above for drive health issues. --> RESULT: Preclear Finished Successfully!.

 

It's never a good sign, but if the post read test passed the disk is OK for now, bit I would recommend at least running a couple more read tests (or SMART extended tests) before using the disk.

On 2/6/2024 at 11:01 PM, JorgeB said:

It's never a good sign, but if the post read test passed the disk is OK for now, bit I would recommend at least running a couple more read tests (or SMART extended tests) before using the disk.

Ok Ive run 3 more Preclear and also SMART Extended test.

Can help to verify if this Drive still good to use for the Array?

 

Here's the result.

#################################################################################################### # Unraid Server Preclear of disk Y995K4LHFW9G # # Cycle 3 of 3, partition start on sector 64. # # # # Step 1 of 5 - Pre-read verification: [8:07:11 @ 136 MB/s] SUCCESS # # Step 2 of 5 - Zeroing the disk: [8:06:20 @ 137 MB/s] SUCCESS # # Step 3 of 5 - Writing Unraid's Preclear signature: SUCCESS # # Step 4 of 5 - Verifying Unraid's Preclear signature: SUCCESS # # Step 5 of 5 - Post-Read verification: [8:07:15 @ 136 MB/s] SUCCESS # # # # # # # #################################################################################################### # Cycle elapsed time: 24:20:53 | Total elapsed time: 73:03:33 # #################################################################################################### #################################################################################################### # S.M.A.R.T. Status (device type: default) # # # # ATTRIBUTE INITIAL CYCLE 1 CYCLE 2 CYCLE 3 STATUS # # Reallocated_Sector_Ct 112 112 112 112 - # # Power_On_Hours 30863 30888 30912 30936 Up 73 # # Temperature_Celsius 31 40 39 38 Up 7 # # Reallocated_Event_Count 14 14 14 14 - # # Current_Pending_Sector 0 0 0 0 - # # Offline_Uncorrectable 0 0 0 0 - # # UDMA_CRC_Error_Count 750 750 750 750 - # # # # # #################################################################################################### # # #################################################################################################### --> ATTENTION: Please take a look into the SMART report above for drive health issues. --> RESULT: Preclear Finished Successfully!.

 

Feb 10 08:42:07 preclear_disk_Y995K4LHFW9G_28127: killing smartctl with pid 6448 - probably stalled ... Feb 10 08:42:28 preclear_disk_Y995K4LHFW9G_28127: killing smartctl with pid 6448 - probably stalled ... Feb 10 08:42:50 preclear_disk_Y995K4LHFW9G_28127: killing smartctl with pid 6448 - probably stalled ... Feb 10 08:43:11 preclear_disk_Y995K4LHFW9G_28127: killing smartctl with pid 6448 - probably stalled ... Feb 10 08:43:33 preclear_disk_Y995K4LHFW9G_28127: Resumed Feb 10 08:43:35 preclear_disk_Y995K4LHFW9G_28127: Zeroing: zeroing the disk completed! Feb 10 08:43:36 preclear_disk_Y995K4LHFW9G_28127: Signature: writing signature... Feb 10 08:43:37 preclear_disk_Y995K4LHFW9G_28127: Signature: verifying Unraid's signature on the MBR ... Feb 10 08:43:38 preclear_disk_Y995K4LHFW9G_28127: Signature: Unraid preclear signature is valid! Feb 10 08:43:38 preclear_disk_Y995K4LHFW9G_28127: Post-Read: post-read verification started 1 of 5 retries... Feb 10 08:43:38 preclear_disk_Y995K4LHFW9G_28127: Post-Read: verifying the beginning of the disk. Feb 10 08:43:39 preclear_disk_Y995K4LHFW9G_28127: Post-Read: verifying the rest of the disk. Feb 10 10:22:24 preclear_disk_Y995K4LHFW9G_28127: Post-Read: progress - 25% verified @ 161 MB/s Feb 10 12:11:03 preclear_disk_Y995K4LHFW9G_28127: Post-Read: progress - 50% verified @ 146 MB/s Feb 10 14:14:58 preclear_disk_Y995K4LHFW9G_28127: Post-Read: progress - 75% verified @ 125 MB/s Feb 10 16:50:53 preclear_disk_Y995K4LHFW9G_28127: Post-Read: elapsed time - 8:07:12 Feb 10 16:50:53 preclear_disk_Y995K4LHFW9G_28127: Post-Read: post-read verification completed! Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: Cycle 3 Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: ATTRIBUTE               INITIAL NOW   STATUS Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: Reallocated_Sector_Ct   112     112   - Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: Power_On_Hours          30863   30936 Up 73 Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: Temperature_Celsius     31      38    Up 7 Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: Reallocated_Event_Count 14      14    - Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: Current_Pending_Sector  0       0     - Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: Offline_Uncorrectable   0       0     - Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.: UDMA_CRC_Error_Count    750     750   - Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: S.M.A.R.T.:  Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: Cycle: elapsed time: 24:20:53 Feb 10 16:50:59 preclear_disk_Y995K4LHFW9G_28127: Preclear: total elapsed time: 73:03:38

 

 

ts-p500-smart-20240216-2016.zip

Still looks OK.