here is smartctl output for sdc, sdb & sda in this order. root@rescue ~ # smartctl --all /dev/sdc smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.10.16] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: ST_M13FQBL Serial Number: QNR_BFW Firmware Version: 1117F38F User Capacity: 4,142,054,400 bytes [4.14 GB] Sector Size: 512 bytes logical/physical Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 6 ATA Standard is: ATA/ATAPI-6 T13 1410D revision 2 Local Time is: Mon Nov 18 14:42:22 2013 CET SMART support is: Available - device has SMART capability. SMART support is: Enabled Error SMART Values Read failed: scsi error aborted command Smartctl: SMART Read Values failed. === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: UNKNOWN! SMART Status, Attributes and Thresholds cannot be read. Error SMART Error Log Read failed: scsi error aborted command Smartctl: SMART Error Log Read Failed Error SMART Error Self-Test Log Read failed: scsi error aborted command Smartctl: SMART Self Test Log Read Failed Device does not support Selective Self Tests/Logging root@rescue ~ # smartctl --all /dev/sdb smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.10.16] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: Seagate Barracuda 7200.11 Device Model: ST31500341AS Serial Number: 9VS48G74 LU WWN Device Id: 5 000c50 026b5ba18 Firmware Version: CC1H 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: ATA-8-ACS revision 4 Local Time is: Mon Nov 18 14:42:28 2013 CET 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: (0x82) Offline data collection activity was completed without error. 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: ( 617) 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: ( 1) minutes. Extended self-test routine recommended polling time: ( 255) minutes. Conveyance self-test routine recommended polling time: ( 2) minutes. SCT capabilities: (0x103f) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 10 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 115 099 006 Pre-fail Always - 87196730 3 Spin_Up_Time 0x0003 100 100 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 15 5 Reallocated_Sector_Ct 0x0033 099 099 036 Pre-fail Always - 60 7 Seek_Error_Rate 0x000f 090 060 030 Pre-fail Always - 1007030093 9 Power_On_Hours 0x0032 070 070 000 Old_age Always - 27148 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 15 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0 188 Command_Timeout 0x0032 100 099 000 Old_age Always - 274882101315 189 High_Fly_Writes 0x003a 021 021 000 Old_age Always - 79 190 Airflow_Temperature_Cel 0x0022 062 052 045 Old_age Always - 38 (Min/Max 38/38) 194 Temperature_Celsius 0x0022 038 048 000 Old_age Always - 38 (0 22 0 0) 195 Hardware_ECC_Recovered 0x001a 042 036 000 Old_age Always - 87196730 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 213021787974155 241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 4170770584 242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 1652554606 SMART Error Log Version: 1 No Errors Logged 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. root@rescue ~ # smartctl --all /dev/sda smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.10.16] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Model Family: Seagate Barracuda 7200.11 Device Model: ST31500341AS Serial Number: 9VS49LPR LU WWN Device Id: 5 000c50 026c5211f Firmware Version: CC1H 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: ATA-8-ACS revision 4 Local Time is: Mon Nov 18 14:42:36 2013 CET 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: (0x82) Offline data collection activity was completed without error. 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: ( 609) 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: ( 1) minutes. Extended self-test routine recommended polling time: ( 255) minutes. Conveyance self-test routine recommended polling time: ( 2) minutes. SCT capabilities: (0x103f) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 10 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 105 087 006 Pre-fail Always - 187486275 3 Spin_Up_Time 0x0003 100 100 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 8 5 Reallocated_Sector_Ct 0x0033 001 001 036 Pre-fail Always FAILING_NOW 4095 7 Seek_Error_Rate 0x000f 086 057 030 Pre-fail Always - 9457085579 9 Power_On_Hours 0x0032 070 070 000 Old_age Always - 27078 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 037 020 Old_age Always - 8 184 End-to-End_Error 0x0032 100 100 099 Old_age Always - 0 187 Reported_Uncorrect 0x0032 001 001 000 Old_age Always - 400 188 Command_Timeout 0x0032 100 098 000 Old_age Always - 420913217663 189 High_Fly_Writes 0x003a 028 028 000 Old_age Always - 72 190 Airflow_Temperature_Cel 0x0022 063 046 045 Old_age Always - 37 (Min/Max 26/37) 194 Temperature_Celsius 0x0022 037 054 000 Old_age Always - 37 (0 24 0 0) 195 Hardware_ECC_Recovered 0x001a 044 038 000 Old_age Always - 187486275 197 Current_Pending_Sector 0x0012 100 100 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0 240 Head_Flying_Hours 0x0000 100 253 000 Old_age Offline - 20328080239046 241 Total_LBAs_Written 0x0000 100 253 000 Old_age Offline - 3230313850 242 Total_LBAs_Read 0x0000 100 253 000 Old_age Offline - 535643002 SMART Error Log Version: 1 ATA Error Count: 224 (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 224 occurred at disk power-on lifetime: 27073 hours (1128 days + 1 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 71 04 9d 00 32 e0 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- ec 00 01 00 00 00 a0 00 11d+08:50:46.614 IDENTIFY DEVICE ff 00 00 00 00 00 00 00 11d+08:50:46.575 [VENDOR SPECIFIC] 00 00 00 00 00 00 00 ff 11d+08:50:46.575 NOP [Abort queued commands] ff 00 00 00 00 00 00 00 11d+08:50:44.093 [VENDOR SPECIFIC] 00 00 00 00 00 00 00 ff 11d+08:50:44.093 NOP [Abort queued commands] Error 223 occurred at disk power-on lifetime: 27073 hours (1128 days + 1 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 71 04 9d 00 32 e0 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 -- -- -- -- -- -- -- -- ---------------- -------------------- a1 00 00 00 00 00 a0 00 11d+07:56:37.110 IDENTIFY PACKET DEVICE ec 00 00 00 00 00 a0 00 11d+07:56:37.103 IDENTIFY DEVICE ff 00 00 00 00 00 00 00 11d+07:56:36.774 [VENDOR SPECIFIC] 00 00 00 00 00 00 00 ff 11d+07:56:36.773 NOP [Abort queued commands] a1 00 00 00 00 00 a0 00 11d+07:56:31.758 IDENTIFY PACKET DEVICE Error 222 occurred at disk power-on lifetime: 27073 hours (1128 days + 1 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 71 04 9d 00 32 e0 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- ec 00 00 00 00 00 a0 00 11d+07:56:37.103 IDENTIFY DEVICE ff 00 00 00 00 00 00 00 11d+07:56:36.774 [VENDOR SPECIFIC] 00 00 00 00 00 00 00 ff 11d+07:56:36.773 NOP [Abort queued commands] a1 00 00 00 00 00 a0 00 11d+07:56:31.758 IDENTIFY PACKET DEVICE ec 00 00 00 00 00 a0 00 11d+07:56:31.751 IDENTIFY DEVICE Error 221 occurred at disk power-on lifetime: 27073 hours (1128 days + 1 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 71 04 9d 00 32 e0 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 -- -- -- -- -- -- -- -- ---------------- -------------------- a1 00 00 00 00 00 a0 00 11d+07:56:31.758 IDENTIFY PACKET DEVICE ec 00 00 00 00 00 a0 00 11d+07:56:31.751 IDENTIFY DEVICE ff 00 00 00 00 00 00 00 11d+07:56:31.432 [VENDOR SPECIFIC] 00 00 00 00 00 00 00 ff 11d+07:56:31.432 NOP [Abort queued commands] a1 00 00 00 00 00 a0 00 11d+07:56:31.353 IDENTIFY PACKET DEVICE Error 220 occurred at disk power-on lifetime: 27073 hours (1128 days + 1 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 71 04 9d 00 32 e0 Commands leading to the command that caused the error were: CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name -- -- -- -- -- -- -- -- ---------------- -------------------- ec 00 00 00 00 00 a0 00 11d+07:56:31.751 IDENTIFY DEVICE ff 00 00 00 00 00 00 00 11d+07:56:31.432 [VENDOR SPECIFIC] 00 00 00 00 00 00 00 ff 11d+07:56:31.432 NOP [Abort queued commands] a1 00 00 00 00 00 a0 00 11d+07:56:31.353 IDENTIFY PACKET DEVICE ec 00 00 00 00 00 a0 00 11d+07:56:31.346 IDENTIFY DEVICE 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.