christuf Posted December 14, 2011 Posted December 14, 2011 Hi - long time, trouble-free user of UnRAID. I got a couple of new HDDs during an Best Buy sale over Thanksgiving - intended to add one to my server, and keep another as a spare in case of a drive failure while the prices of disks are so high. So I brought my array offline to add the disk, but then thought - you know what... before I go adding a drive, why don't I hop in and check the SMART reports for the drives in the array (not that I've experienced any problems of late... just thought it was worth checking out). The parity drive kicked out the following SMART report: === START OF INFORMATION SECTION === Model Family: Western Digital Caviar Green (Adv. Format) family Device Model: WDC WD20EARS-00MVWB0 Firmware Version: 51.0AB51 User Capacity: 2,000,398,934,016 bytes Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Tue Dec 13 23:32:58 2011 EST 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: (0x85) Offline data collection activity was aborted by an interrupting command from host. Auto Offline Data Collection: Enabled. Self-test execution status: ( 121) The previous self-test completed having the read element of the test failed. Total time to complete Offline data collection: (37800) 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: ( 255) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x3035) SCT Status 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 178 178 051 Pre-fail Always - 16918 3 Spin_Up_Time 0x0027 169 167 021 Pre-fail Always - 6525 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 871 5 Reallocated_Sector_Ct 0x0033 191 191 140 Pre-fail Always - 186 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 091 091 000 Old_age Always - 6679 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 - 58 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 12 193 Load_Cycle_Count 0x0032 189 189 000 Old_age Always - 35007 194 Temperature_Celsius 0x0022 116 111 000 Old_age Always - 34 196 Reallocated_Event_Count 0x0032 127 127 000 Old_age Always - 73 197 Current_Pending_Sector 0x0032 199 196 000 Old_age Always - 506 198 Offline_Uncorrectable 0x0030 196 196 000 Old_age Offline - 1313 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 168 168 000 Old_age Offline - 8583 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 90% 6679 837993949 # 2 Short offline Completed: read failure 90% 6679 837993944 # 3 Short offline Completed: read failure 90% 6679 946584696 # 4 Short offline Completed: read failure 90% 6679 837993948 # 5 Short offline Completed without error 00% 2285 - # 6 Short offline Aborted by host 90% 2285 - # 7 Short offline Aborted by host 80% 2285 - # 8 Short offline Aborted by host 80% 2285 - # 9 Short offline Completed without error 00% 582 - 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. I know that having non-zero values for "Reallocated_Sector_Ct" and "Current_Pending_Sector" are bad news. Is this drive failing? Should I pre-emptively switch it out with one of my new drives? This is my first time dealing with changing my HDD config, so would be *really* grateful if someone could give me guidance on what to do. I'm guessing I just go into the UnRAID drive config and switch out the parity disk for one of my new disks, and start the array allowing parity to rebuild? Thank you so much in advance - let me know if you need any more info Chris
Joe L. Posted December 14, 2011 Posted December 14, 2011 The drive is failing... As described, RMA it. As you said, Stop the array replace parity drive with its replacement. Start array (it will begin calculating parity.) Once parity is calculated, run manual parity check to verify the disk can be read. Joe L.
christuf Posted December 15, 2011 Author Posted December 15, 2011 Thank you both - have replaced the drive (very glad I have a spare in stock!). Will run a check overnight, and if parity calculates without error, I will RMA the drive. Will start doing routine checks of the SMART status of the array drives. Is there any add-ons out there that could do it automatically on a preset (e.g. monthly) basis and email to warn of any errors?
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