September 1, 201114 yr Last Saturday I was watching a HD movie from a small XMBC application connected via a Gigabit ethernet cable to my unRAID server. Several times movie stopped in order to cache more data. Never happened to me before (at least when using copper, wifi is another story). Lately, I received my daily unRAID email notification.... but this time I discovered that I had one bad drive! Looking at its content revealed that it had the movie I was watching which explains the performance issue. I've been copying content to this bad drive (in reality to the parity drive) but didn't notice it was disabled! That is why unRAID is great. For the records here is my smartctl output for this year and half old drive. smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.0-ck] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: Western Digital Caviar Green (Adv. Format) Device Model: WDC WD15EARS-00Z5B1 Serial Number: WD-WMAVU2826445 LU WWN Device Id: 5 0014ee 0576e1465 Firmware Version: 80.00A80 User Capacity: 1 500 301 910 016 bytes [1,50 TB] Sector Size: 512 bytes logical/physical 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: Thu Sep 1 10:26:45 2011 CEST 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: FAILED! Drive failure expected in less than 24 hours. SAVE ALL DATA. See vendor-specific Attribute list for failed Attributes. General SMART Values: Offline data collection status: (0x84) Offline data collection activity was suspended by an interrupting command from host. Auto Offline Data Collection: Enabled. 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: (33000) 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: (0x3031) 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 199 199 051 Pre-fail Always - 4382 3 Spin_Up_Time 0x0027 187 182 021 Pre-fail Always - 5625 4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1384 5 Reallocated_Sector_Ct 0x0033 041 041 140 Pre-fail Always FAILING_NOW 1265 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 086 086 000 Old_age Always - 10904 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 - 38 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 18 193 Load_Cycle_Count 0x0032 176 176 000 Old_age Always - 73871 194 Temperature_Celsius 0x0022 121 110 000 Old_age Always - 29 196 Reallocated_Event_Count 0x0032 001 001 000 Old_age Always - 968 197 Current_Pending_Sector 0x0032 199 199 000 Old_age Always - 330 198 Offline_Uncorrectable 0x0030 200 200 000 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 Warning: ATA error count 664 inconsistent with error log pointer 3 ATA Error Count: 664 (device log contains only the most recent five errors) CR = Command Register [HEX] FR = Features Register [HEX] SC = Sector Count Register [HEX] SN = Sector Number Register [HEX] CL = Cylinder Low Register [HEX] CH = Cylinder High Register [HEX] DH = Device/Head Register [HEX] DC = Device Command Register [HEX] ER = Error register [HEX] ST = Status register [HEX] Powered_Up_Time is measured from power on, and printed as DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes, SS=sec, and sss=millisec. It "wraps" after 49.710 days. Error 664 occurred at disk power-on lifetime: 10902 hours (454 days + 6 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER ST SC SN CL CH DH -- -- -- -- -- -- -- 04 61 45 00 00 00 a0 Device Fault; Error: ABRT Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- ef 03 45 00 00 00 a0 08 13d+01:16:56.399 SET FEATURES [set transfer mode] ec 00 00 00 00 00 a0 08 13d+01:16:56.379 IDENTIFY DEVICE ec 00 00 00 00 00 a0 08 13d+01:16:50.913 IDENTIFY DEVICE ef 03 45 00 00 00 a0 08 13d+01:16:50.895 SET FEATURES [set transfer mode] ec 00 00 00 00 00 a0 08 13d+01:16:50.874 IDENTIFY DEVICE Error 663 occurred at disk power-on lifetime: 10902 hours (454 days + 6 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER ST SC SN CL CH DH -- -- -- -- -- -- -- 04 61 45 00 00 00 a0 Device Fault; Error: ABRT Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- ef 03 45 00 00 00 a0 08 13d+01:16:50.895 SET FEATURES [set transfer mode] ec 00 00 00 00 00 a0 08 13d+01:16:50.874 IDENTIFY DEVICE ec 00 00 00 00 00 a0 08 13d+01:16:45.409 IDENTIFY DEVICE ef 03 45 00 00 00 a0 08 13d+01:16:45.390 SET FEATURES [set transfer mode] ec 00 00 00 00 00 a0 08 13d+01:16:45.369 IDENTIFY DEVICE Error 662 occurred at disk power-on lifetime: 10902 hours (454 days + 6 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER ST SC SN CL CH DH -- -- -- -- -- -- -- 04 61 45 00 00 00 a0 Device Fault; Error: ABRT Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- ef 03 45 00 00 00 a0 08 13d+01:16:45.390 SET FEATURES [set transfer mode] ec 00 00 00 00 00 a0 08 13d+01:16:45.369 IDENTIFY DEVICE ec 00 00 00 00 00 a0 08 13d+01:16:44.839 IDENTIFY DEVICE ef 03 46 00 00 00 a0 08 13d+01:16:44.820 SET FEATURES [set transfer mode] Error 661 occurred at disk power-on lifetime: 10902 hours (454 days + 6 hours) When the command that caused the error occurred, the device was active or idle. After command completion occurred, registers were: ER ST SC SN CL CH DH -- -- -- -- -- -- -- 04 61 46 00 00 00 a0 Device Fault; Error: ABRT Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- ef 03 46 00 00 00 a0 08 13d+01:16:44.820 SET FEATURES [set transfer mode] ec 00 00 00 00 00 a0 08 13d+01:16:44.799 IDENTIFY DEVICE ec 00 00 00 00 00 a0 08 13d+01:16:44.270 IDENTIFY DEVICE ef 03 46 00 00 00 a0 08 13d+01:16:44.251 SET FEATURES [set transfer mode] 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.
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