March 25, 201313 yr UnRaid marked one of my hard drives as red recently. I did a SMART test and while the SMART tests all come back clean (I also put the hard drive into another computer and did other hdd scan tests which revealed no problems). However, on the SMART Status Page, the hard drive also reveals "ATA Error Count: 1" and has some information that my other hard drives do not have. I do not understand this error, especially since the SMART tests keep coming back clean. Should I proceed to insert this disk back into the array, or do I need to proceed to replace it? I should note that I have had to hard reboot this server a few times since I've been having some problems with UnRaid freezing during a robocopy operation. So, I'm not sure if this error may be related to that. Here is the SMART Status Report: Statistics for /dev/sdj SAMSUNG_HD103UJ_S13PJ1CS301478 smartctl -a -d ata /dev/sdj smartctl 5.40 2010-10-16 r3189 [i486-slackware-linux-gnu] (local build) Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: SAMSUNG SpinPoint F1 DT series Device Model: SAMSUNG HD103UJ Serial Number: S13PJ1CS301478 Firmware Version: 1AA01113 User Capacity: 1,000,204,886,016 bytes Device is: In smartctl database [for details use: -P show] ATA Version is: 8 ATA Standard is: ATA-8-ACS revision 3b Local Time is: Sun Mar 24 20:03:53 2013 PDT 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: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. 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: (11601) 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: ( 194) minutes. Conveyance self-test routine recommended polling time: ( 21) minutes. SCT capabilities: (0x003f) SCT Status supported. SCT Error Recovery Control 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 0x000f 100 100 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0007 068 068 011 Pre-fail Always - 10310 4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 903 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 100 100 051 Pre-fail Always - 0 8 Seek_Time_Performance 0x0025 100 100 015 Pre-fail Offline - 9853 9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 11730 10 Spin_Retry_Count 0x0033 100 100 051 Pre-fail Always - 0 11 Calibration_Retry_Count 0x0012 100 100 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 334 13 Read_Soft_Error_Rate 0x000e 100 100 000 Old_age Always - 0 183 Runtime_Bad_Block 0x0032 100 100 000 Old_age Always - 26 184 End-to-End_Error 0x0033 100 100 000 Pre-fail Always - 0 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 188 Command_Timeout 0x0032 100 100 000 Old_age Always - 0 190 Airflow_Temperature_Cel 0x0022 067 062 000 Old_age Always - 33 (Min/Max 30/33) 194 Temperature_Celsius 0x0022 068 061 000 Old_age Always - 32 (Min/Max 29/35) 195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 494 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 100 100 000 Old_age Always - 199 200 Multi_Zone_Error_Rate 0x000a 100 100 000 Old_age Always - 0 201 Soft_Read_Error_Rate 0x000a 100 100 000 Old_age Always - 0 SMART Error Log Version: 1 ATA Error Count: 1 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 1 occurred at disk power-on lifetime: 0 hours (0 days + 0 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 -- -- -- -- -- -- -- 00 d0 00 a7 4e 29 e0 at LBA = 0x00294ea7 = 2707111 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- c8 00 10 97 4e 29 e0 08 05:10:22.830 READ DMA c8 00 e0 b7 45 29 e0 08 05:10:22.810 READ DMA c8 00 08 97 42 29 e0 08 05:10:22.810 READ DMA c8 00 90 07 3e 29 e0 08 05:10:22.800 READ DMA c8 00 98 87 3b 29 e0 08 05:10:22.790 READ DMA 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% 11729 - # 2 Short offline Completed without error 00% 11725 - # 3 Short offline Completed without error 00% 11725 - # 4 Short offline Completed without error 00% 11707 - # 5 Short offline Completed without error 00% 11707 - # 6 Short offline Completed without error 00% 31 - # 7 Short offline Interrupted (host reset) 90% 31 - 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. Any help you can provide would be appreciated. Thanks!
March 25, 201313 yr 199 UDMA_CRC_Error_Count 0x003e 100 100 000 Old_age Always - 199 indicates a problem with the cabling to this drive and checksum errors across it. If you've been anal and tie-wrapped your SATA cables into neat bundles, you've caused the problem, as the cables are not shielded and pick up noise from each other. Cut the tie-wraps and get some space between the cables. (messy = better) It is especially bad if they are bundled with the power cables. In any case,the drive is probably fine, but the cable/cabling to it needs attention. Joe L.
March 25, 201313 yr Author Thanks for the prompt information Joe! I had bought this server from LimeTech, but I did have to replace the power supply early last year, and I don't recall whether I tried to "clean things up". I've uploaded some photos of how it currently looks below: https://skydrive.live.com/redir?resid=57B825B47436CA07!107&authkey=!APAW42tism9WA3o In case that link breaks since it's too long, here is a shortened link: http://sdrv.ms/11AFkOx The drive in question is in the middle bay. Does this look too tight? And if I remove the tie, can I ignore this error unless I see the error again? Thanks!
March 25, 201313 yr The ATA Error Count is just a history of certain errors and it stays with the drive, but only the last 5 are displayed. Each one shows the operational hour in which it occurred, and you can see in your SMART report that the only error says "Error 1 occurred at disk power-on lifetime: 0 hours", when the drive was brand new! You now have operated this drive for over 11,700 hours, so that's a long time ago. Keep your SMART reports for each drive, so you can compare them. If you check another SMART report in a week or month, and the CRC error count is still 199, then you know that you probably fixed the problem, because there are no additional CRC errors.
March 25, 201313 yr Author Rob: Thanks for pointing out that this error occurred at day and hour 0! In that case, I'll leave things as-is and I'll attempt to re-add it to the array using Joe's instructions at http://lime-technology.com/forum/index.php?topic=2569.msg20649#msg20649. Thanks again Joe L and RobJ for your very prompt and insightful answers!
March 25, 201313 yr The drive in question is in the middle bay. Does this look too tight? And if I remove the tie, can I ignore this error unless I see the error again? Thanks! The cables to that middle bay are closely adjacent for most of their length, cut the tie-wrap, try to separate the cables so they are not all closely adjacent and not parallel for most of their length.
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