December 21, 200817 yr My array has been working fine frecently a drive was not recognized. After a reboot without changing the drive I let unraid rebuild this drive. This happened without incident and without any errors. I am now troubleshooting. Unfortunately, I did not capture a syslog at the time of the error. Anyway, Smart showed UDMA_CRC_Error_Count on this disk to be 8 (all smart data below). I switched the sata cable. The value of the udma crc error count remains 8. I am wondering if this is a problem or is this a result of prior issues and will this gradually normalize.. Any info is appreciated. 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 0x000b 100 100 016 Pre-fail Always - 0 2 Throughput_Performance 0x0005 130 130 054 Pre-fail Offline - 150 3 Spin_Up_Time 0x0007 103 103 024 Pre-fail Always - 678 (Average 678) 4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 66 5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0 7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 132 132 020 Pre-fail Offline - 33 9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 979 10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 17 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 98 193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 98 194 Temperature_Celsius 0x0002 171 171 000 Old_age Always - 35 (Lifetime Min/Max 15/42) 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 8 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 without error 00% 979 - # 2 Short offline Completed without error 00% 979 - # 3 Extended offline Interrupted (host reset) 90% 940 - # 4 Short offline Completed without error 00% 921 - # 5 Short offline Completed without error 00% 921 - # 6 Short offline Completed without error 00% 921 -
December 21, 200817 yr My array has been working fine frecently a drive was not recognized. After a reboot without changing the drive I let unraid rebuild this drive. This happened without incident and without any errors. I am now troubleshooting. Unfortunately, I did not capture a syslog at the time of the error. Anyway, Smart showed UDMA_CRC_Error_Count on this disk to be 8 (all smart data below). I switched the sata cable. The value of the udma crc error count remains 8. I am wondering if this is a problem or is this a result of prior issues and will this gradually normalize.. Any info is appreciated. 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 0x000b 100 100 016 Pre-fail Always - 0 2 Throughput_Performance 0x0005 130 130 054 Pre-fail Offline - 150 3 Spin_Up_Time 0x0007 103 103 024 Pre-fail Always - 678 (Average 678) 4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 66 5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0 7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0 8 Seek_Time_Performance 0x0005 132 132 020 Pre-fail Offline - 33 9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 979 10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 17 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 98 193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 98 194 Temperature_Celsius 0x0002 171 171 000 Old_age Always - 35 (Lifetime Min/Max 15/42) 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 8 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 without error 00% 979 - # 2 Short offline Completed without error 00% 979 - # 3 Extended offline Interrupted (host reset) 90% 940 - # 4 Short offline Completed without error 00% 921 - # 5 Short offline Completed without error 00% 921 - # 6 Short offline Completed without error 00% 921 - SMART data counts increment over the entire life of the disk, they never "normalize" or zero. If you see them continuing to grow, then it is a disk needing more attention. Eventually, when a given count exceeds the manufacturer's threshold, the drive will be marked as "failed" Don't worry, the disk will eventually fail... ALL disks fail eventually, it is just a matter of waiting long enough. Joe L.
December 22, 200817 yr The Raw values are sometimes meaningful and sometimes not. It depends on the drive and the manufacturer. Some values might be bit masks, making the number completely meaningless. It seems to be common convention that the RAW temperature reading is the temperature in Celcius. Your value of "8" may mean something and it may not. Another user may have a gigantic value that is completely meaningless. The "Value" column provides a normalized value between 0 and 255. Higher numbers are GOOD, lower numbers are BAD. If the value drops to the THRESH (threshold) value or below, that means the disk is expected to fail very soon.
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