The disk of any server is very important as it stores critical information, this would include the OS information and any additional files which you may of added over time. You can check the status of the disk with the following commands:
smartctl short test -- 1 Minute
smartctl --test=short /dev/sda
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.10.23-xxxx-std-ipv6-64] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===
Sending command: "Execute SMART Short self-test routine immediately in off-line mode".
Drive command "Execute SMART Short self-test routine immediately in off-line mode" successful.
Testing has begun.
Please wait 1 minutes for test to complete.
Test will complete after Tue Feb 10 20:30:12 2015
Use smartctl -X to abort test.fdisk -l -- This will list all current disk.
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x0006dd70
Device Boot Start End Blocks Id System
/dev/sda1 * 4096 1952473087 976234496 83 Linux
/dev/sda2 1952473088 1953519615 523264 82 Linux swap / Solaris
sudo smartctl -a -d ata /dev/sda -- This will provide you with the disk health and show any errors.
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.0-45-generic] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Toshiba 3.5" HDD DT01ACA...
Device Model: TOSHIBA DT01ACA100
Serial Number: 13FHX2MPS
LU WWN Device Id: 5 000039 ff2e36a00
Firmware Version: MS2OA750
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 7200 rpm
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Sun Feb 8 23:41:30 2015 GMT
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: (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: ( 7944) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No 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: ( 133) minutes.
SCT capabilities: (0x003d) 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 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0005 139 139 054 Pre-fail Offline - 79
3 Spin_Up_Time 0x0007 127 127 024 Pre-fail Always - 182 (Average 180)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 55
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 118 118 020 Pre-fail Offline - 33
9 Power_On_Hours 0x0012 099 099 000 Old_age Always - 11315
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 52
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 96
193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 96
194 Temperature_Celsius 0x0002 222 222 000 Old_age Always - 27 (Min/Max 14/42)
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 - 0
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% 11146 -
# 2 Short offline Completed without error 00% 10751 -
# 3 Short offline Completed without error 00% 9129 -
# 4 Short offline Completed without error 00% 7569 -
# 5 Short offline Completed without error 00% 6792 -
# 6 Short offline Completed without error 00% 6788 -
# 7 Short offline Completed without error 00% 5089 -
# 8 Short offline Completed without error 00% 5085 -
# 9 Short offline Completed without error 00% 2501 -
#10 Short offline Completed without error 00% 2496 -
#11 Short offline Completed without error 00% 2496 -
#12 Short offline Completed without error 00% 2472 -
#13 Short offline Completed without error 00% 5 -
#14 Short offline Completed without error 00% 0 -
#15 Short offline Completed without error 00% 0 -
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. cat /proc/mdstat -- Shows the RAID status on the server.
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
unused devices: <none>Hard drives will fail.
It’s a question of when it will fail rather than if it will fail.
Here is an an hard drive which has failed after 7 hours of usage, a backup is always recommended.
smartctl 5.41 2011-06-09 r3365 [x86_64-linux-2.6.32-34-pve] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF INFORMATION SECTION ===
Device Model: HGST HUS724020ALA640
Serial Number: PN2134P6KWRLWX
LU WWN Device Id: 5 000cca 22df6e167
Firmware Version: MF6OAA70
User Capacity: 2,000,398,934,016 bytes [2.00 TB]
Sector Size: 512 bytes logical/physical
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 8
ATA Standard is: ATA-8-ACS revision 4
Local Time is: Tue Feb 10 23:41:42 2015 UTC
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: (0x80) Offline data collection activity
was never started.
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: ( 24) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No 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.
SCT capabilities: (0x003d) 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 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0005 100 100 054 Pre-fail Offline - 0
3 Spin_Up_Time 0x0007 100 100 024 Pre-fail Always - 0
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 3
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 100 100 020 Pre-fail Offline - 0
9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 7
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 3
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 3
193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 3
194 Temperature_Celsius 0x0002 157 157 000 Old_age Always - 38 (Min/Max 24/39)
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 196 196 000 Old_age Always - 16
SMART Error Log Version: 1
ATA Error Count: 16 (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 16 occurred at disk power-on lifetime: 7 hours (0 days + 7 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
-- -- -- -- -- -- --
84 51 01 07 10 00 00 Error: ICRC, ABRT at LBA = 0x00001007 = 4103
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
61 10 60 08 10 d4 40 00 07:13:27.766 WRITE FPDMA QUEUED
61 08 58 00 d0 d4 40 00 07:13:27.766 WRITE FPDMA QUEUED
61 08 50 78 10 d8 40 00 07:13:27.766 WRITE FPDMA QUEUED
61 08 48 00 10 00 40 00 07:13:27.766 WRITE FPDMA QUEUED
ec 00 00 00 00 00 a0 00 07:13:27.765 IDENTIFY DEVICE
Error 15 occurred at disk power-on lifetime: 7 hours (0 days + 7 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
-- -- -- -- -- -- --
84 51 01 17 10 d4 00 Error: ICRC, ABRT at LBA = 0x00d41017 = 13897751
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
61 08 40 20 18 d8 40 00 07:13:27.446 WRITE FPDMA QUEUED
61 08 38 00 10 00 40 00 07:13:27.446 WRITE FPDMA QUEUED
61 08 30 78 10 d8 40 00 07:13:27.446 WRITE FPDMA QUEUED
61 08 28 00 d0 d4 40 00 07:13:27.446 WRITE FPDMA QUEUED
61 10 20 08 10 d4 40 00 07:13:27.446 WRITE FPDMA QUEUED
Error 14 occurred at disk power-on lifetime: 7 hours (0 days + 7 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
-- -- -- -- -- -- --
84 51 01 27 18 d8 01 Error: ICRC, ABRT at LBA = 0x01d81827 = 30939175
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
61 08 38 78 32 dd 40 00 07:13:26.308 WRITE FPDMA QUEUED
61 08 30 58 41 dd 40 00 07:13:26.308 WRITE FPDMA QUEUED
61 08 28 80 32 dd 40 00 07:13:26.308 WRITE FPDMA QUEUED
61 08 20 08 42 dd 40 00 07:13:26.308 WRITE FPDMA QUEUED
61 08 18 70 41 dd 40 00 07:13:26.308 WRITE FPDMA QUEUED
Error 13 occurred at disk power-on lifetime: 7 hours (0 days + 7 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
-- -- -- -- -- -- --
84 51 01 27 18 d8 01 Error: ICRC, ABRT at LBA = 0x01d81827 = 30939175
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
61 08 00 78 41 dd 40 00 07:13:25.926 WRITE FPDMA QUEUED
61 08 f0 20 18 d8 40 00 07:13:25.926 WRITE FPDMA QUEUED
ec 00 00 00 00 00 a0 00 07:13:25.925 IDENTIFY DEVICE
ef 03 42 00 00 00 a0 00 07:13:25.925 SET FEATURES [Set transfer mode]
ec 00 00 00 00 00 a0 00 07:13:25.924 IDENTIFY DEVICE
Error 12 occurred at disk power-on lifetime: 7 hours (0 days + 7 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
-- -- -- -- -- -- --
84 51 01 67 41 dd 01 Error: ICRC, ABRT at LBA = 0x01dd4167 = 31277415
Commands leading to the command that caused the error were:
CR FR SC SN CL CH DH DC Powered_Up_Time Command/Feature_Name
-- -- -- -- -- -- -- -- ---------------- --------------------
61 08 58 00 42 dd 40 00 07:13:20.268 WRITE FPDMA QUEUED
61 08 50 68 41 dd 40 00 07:13:20.268 WRITE FPDMA QUEUED
61 08 48 88 32 dd 40 00 07:13:20.268 WRITE FPDMA QUEUED
61 08 40 60 41 dd 40 00 07:13:20.268 WRITE FPDMA QUEUED
ec 00 00 00 00 00 a0 00 07:13:20.266 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.SSD drives are also subject to fail as well:
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-3.14.77-mod-std-ipv6-64-rescue] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Crucial/Micron MX100/MX200/M5x0/M600 Client SSDs
Device Model: Micron_M600_MTFDDAK256MBF
Serial Number: 154110C4F492
LU WWN Device Id: 5 00a075 110c4f492
Firmware Version: MU03
User Capacity: 256,060,514,304 bytes [256 GB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-3 T13/2161-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Fri Jun 30 15:50:59 2017 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.
No failed Attributes found.
General SMART Values:
Offline data collection status: (0x80) Offline data collection activity
was never started.
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: ( 814) 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: ( 5) minutes.
Conveyance self-test routine
recommended polling time: ( 3) minutes.
SCT capabilities: (0x0035) 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 100 100 000 Pre-fail Always - 0
5 Reallocate_NAND_Blk_Cnt 0x0032 100 100 010 Old_age Always - 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 12499
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 13
171 Program_Fail_Count 0x0032 100 100 000 Old_age Always - 0
172 Erase_Fail_Count 0x0032 100 100 000 Old_age Always - 0
173 Ave_Block-Erase_Count 0x0032 001 001 000 Old_age Always - 3436
174 Unexpect_Power_Loss_Ct 0x0032 100 100 000 Old_age Always - 12
180 Unused_Reserve_NAND_Blk 0x0033 000 000 000 Pre-fail Always - 1924
183 SATA_Interfac_Downshift 0x0032 100 100 000 Old_age Always - 0
184 Error_Correction_Count 0x0032 100 100 000 Old_age Always - 0
187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0
194 Temperature_Celsius 0x0022 064 053 000 Old_age Always - 36 (Min/Max 18/47)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0030 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 100 100 000 Old_age Always - 0
202 Percent_Lifetime_Used 0x0030 000 000 001 Old_age Offline FAILING_NOW 100
206 Write_Error_Rate 0x000e 100 100 000 Old_age Always - 0
210 Success_RAIN_Recov_Cnt 0x0032 100 100 000 Old_age Always - 0
246 Total_Host_Sector_Write 0x0032 100 100 000 Old_age Always - 515686330412
247 Host_Program_Page_Count 0x0032 100 100 000 Old_age Always - 16160251554
248 Bckgnd_Program_Page_Cnt 0x0032 100 100 000 Old_age Always - 13516879563
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 Vendor (0xff) Completed without error 00% 200 -
# 2 Vendor (0xff) Completed without error 00% 159 -
# 3 Vendor (0xff) Completed without error 00% 117 -
# 4 Vendor (0xff) Completed without error 00% 76 -
# 5 Short offline Completed without error 00% 34 -
# 6 Short offline Completed without error 00% 32 -
# 7 Short offline Completed without error 00% 32 -
# 8 Vendor (0xff) Completed without error 00% 29 -
# 9 Vendor (0xff) Completed without error 00% 16 -
#10 Short offline Completed without error 00% 0 -
#11 Short offline Completed without error 00% 0 -
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.