Mihail Posted May 24, 2021 Share Posted May 24, 2021 Hi, This is possibly a silly question but I was wondering how a smart test can fail, but the entire mechnical hdd is able to write the entire disk and read it back with no errors reported. What am I not understanding? Tested clearing the disk with shred 3 passes and tested reading the whole disk back with dd and got no errors, normal performance figures. How is this possible? Maybe some of you drive experts can figure this out. === START OF INFORMATION SECTION === Model Family: Western Digital Red Device Model: WDC WD60EFRX-68MYMN1 Serial Number: WD-################# LU WWN Device Id: 5 0014ee 2b73476cd Firmware Version: 82.00A82 User Capacity: 6,001,175,126,016 bytes [6.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 5700 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2, ACS-3 T13/2161-D revision 3b SATA Version is: SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s) SMART support is: Available - device has SMART capability. SMART support is: Enabled 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 253 228 021 Pre-fail Always - 5800 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 50 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 048 048 000 Old_age Always - 38350 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 - 49 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 41 193 Load_Cycle_Count 0x0032 170 170 000 Old_age Always - 91648 194 Temperature_Celsius 0x0022 115 103 000 Old_age Always - 37 196 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 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed: read failure 70% 38209 3130108536 # 2 Extended offline Completed without error 00% 38138 - # 3 Short offline Completed: read failure 60% 38042 3130108384 # 4 Extended offline Completed without error 00% 37998 - # 5 Short offline Completed without error 00% 37874 - Quote Link to comment
JorgeB Posted May 25, 2021 Share Posted May 25, 2021 It's not normal for sure, it still fails the SMART test after the clearing? Quote Link to comment
Mihail Posted May 26, 2021 Author Share Posted May 26, 2021 At least the short test seems to succeed now. Left the long test running, but it will take until morning. My confidance in SMART is not great at the moment Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 38358 - # 2 Short offline Completed: read failure 70% 38209 3130108536 # 3 Extended offline Completed without error 00% 38138 - # 4 Short offline Completed: read failure 60% 38042 3130108384 # 5 Extended offline Completed without error 00% 37998 - Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Short offline Completed without error 00% 38358 - # 2 Short offline Completed: read failure 70% 38209 3130108536 # 3 Extended offline Completed without error 00% 38138 - # 4 Short offline Completed: read failure 60% 38042 3130108384 # 5 Extended offline Completed without error 00% 37998 - Quote Link to comment
JorgeB Posted May 26, 2021 Share Posted May 26, 2021 One thing I forgot to mention, if if didn't do a pre-read test first then it's not so strange, i.e., a disk is failing, you do a full write and it starts working, sometimes just for a little while, others it can work for years without issues, not normal would be a read test not failing after a SMART test fail. Quote Link to comment
Mihail Posted May 27, 2021 Author Share Posted May 27, 2021 Well it seems to be "fixed" now. Not sure how much I trust the disk but it does seem to operate and the full smart test went OK 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 248 228 021 Pre-fail Always - 6591 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 51 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 048 048 000 Old_age Always - 38381 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 - 50 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 41 193 Load_Cycle_Count 0x0032 170 170 000 Old_age Always - 91660 194 Temperature_Celsius 0x0022 119 103 000 Old_age Always - 33 196 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 SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Extended offline Completed without error 00% 38370 - # 2 Short offline Completed without error 00% 38358 - # 3 Short offline Completed: read failure 70% 38209 3130108536 # 4 Extended offline Completed without error 00% 38138 - # 5 Short offline Completed: read failure 60% 38042 3130108384 Quote Link to comment
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