Smartmontools is open source tools to check your disk health.
It can be used to check hard disk, SAS disk, SSD and also check disk on raid conroller such as HP Smart Array controller, LSI Megaraid Dell PERC.
How to install Smartmontools on CentOS
# yum install smartmontoolsTo install Smartmontools on Ubuntu
# sudo apt-get install smartmoontolsStart and enable Smartmontools on start up
# systemctl start smartd
# systemctl enable smartdEnable Smart Capability for the disk /dev/sda
# smartctl -s on /dev/sdaTo disable Smart Capability for the disk /dev/sda
# smartctl -s off /dev/sdaUse Smartmontools on regular drive or software raid
# smartctl -i -a /dev/sdaBelow is example output for SSD drive
=== START OF INFORMATION SECTION ===
Model Family: Samsung based SSDs
Device Model: SAMSUNG MZ7LM480HCHP-00003
Serial Number: S1YJNXAH102923
LU WWN Device Id: 5 002538 c40146fa4
Firmware Version: GXT3003Q
User Capacity: 480,103,981,056 bytes [480 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4c
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Sun Oct 27 08:34:29 2019 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
.........
SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0
9 Power_On_Hours 0x0032 094 094 000 Old_age Always - 29238
12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 78
177 Wear_Leveling_Count 0x0013 092 092 005 Pre-fail Always - 543
179 Used_Rsvd_Blk_Cnt_Tot 0x0013 100 100 010 Pre-fail Always - 0
180 Unused_Rsvd_Blk_Cnt_Tot 0x0013 100 100 010 Pre-fail Always - 2431
181 Program_Fail_Cnt_Total 0x0032 100 100 010 Old_age Always - 0
182 Erase_Fail_Count_Total 0x0032 100 100 010 Old_age Always - 0
183 Runtime_Bad_Block 0x0013 100 100 010 Pre-fail Always - 0
184 End-to-End_Error 0x0033 100 100 097 Pre-fail Always - 0
187 Uncorrectable_Error_Cnt 0x0032 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0032 066 051 000 Old_age Always - 34
195 ECC_Error_Rate 0x001a 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 0
199 CRC_Error_Count 0x003e 100 100 000 Old_age Always - 0
202 Exception_Mode_Status 0x0033 100 100 010 Pre-fail Always - 0
235 POR_Recovery_Count 0x0012 099 099 000 Old_age Always - 66
241 Total_LBAs_Written 0x0032 099 099 000 Old_age Always - 271275742255
242 Total_LBAs_Read 0x0032 099 099 000 Old_age Always - 73508579082
243 SATA_Downshift_Ct 0x0032 100 100 000 Old_age Always - 0
244 Thermal_Throttle_St 0x0032 100 100 000 Old_age Always - 0
245 Timed_Workld_Media_Wear 0x0032 100 100 000 Old_age Always - 65535
246 Timed_Workld_RdWr_Ratio 0x0032 100 100 000 Old_age Always - 65535
247 Timed_Workld_Timer 0x0032 100 100 000 Old_age Always - 65535
251 NAND_Writes 0x0032 100 100 000 Old_age Always - 565960926336
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% 28745 -
# 2 Extended offline Completed without error 00% 28634 -
# 3 Extended offline Completed without error 00% 16189 -
# 4 Extended offline Completed without error 00% 7545 -
# 5 Extended offline Completed without error 00% 7531 -
On Samsung SSD drive above you can check Wear_Leveling_Count 092, so the disk life time still 92%.
We can see Power_On_Hours is 29238, this mean the SSD has been power on for 29238 hours (1.218 days).
How to use Smartmontools on HP hp smart array raid controller
# smartctl -a -d cciss,0 /dev/sda
# smartctl -a -d cciss,1 /dev/sdaExample output SAS drive on HP hp smart array raid controller
# smartctl -a -d cciss,0 /dev/sda
smartctl 7.0 2018-12-30 r4883 [x86_64-linux-3.10.0-957.21.3.el7.x86_64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Vendor: HP
Product: EH0300FBQDD
Revision: HPD2
Compliance: SPC-3
User Capacity: 300,000,000,000 bytes [300 GB]
Logical block size: 512 bytes
Rotation Rate: 15000 rpm
Form Factor: 2.5 inches
Logical Unit id: 0x5000c5005952102f
Serial number: 6XN1RFAY0000B303B3TU
Device type: disk
Transport protocol: SAS (SPL-3)
Local Time is: Sun Oct 27 10:56:56 2019 WIB
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Temperature Warning: Enabled
=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK
Current Drive Temperature: 35 C
Drive Trip Temperature: 65 C
Manufactured in week 32 of year 2012
Specified cycle count over device lifetime: 10000
Accumulated start-stop cycles: 120
Elements in grown defect list: 76
Error counter log:
Errors Corrected by Total Correction Gigabytes Total
ECC rereads/ errors algorithm processed uncorrected
fast | delayed rewrites corrected invocations [10^9 bytes] errors
read: 0 10 0 10687 0 251507.146 0
write: 0 0 0 0 0 53598.375 0
verify: 0 0 0 0 0 4474.826 0
Non-medium error count: 328
SMART Self-test log
Num Test Status segment LifeTime LBA_first_err [SK ASC ASQ]
Description number (hours)
# 1 Background long Completed - 47569 - [- - -]
# 2 Background short Completed - 44 - [- - -]
# 3 Background short Completed - 40 - [- - -]
# 4 Background long Completed - 0 - [- - -]
Long (extended) Self-test duration: 1860 seconds [31.0 minutes]Testing SSD drive sdb on HP raid controller
# smartctl -a -d cciss,4 /dev/sdb
smartctl 7.0 2018-12-30 r4883 [x86_64-linux-3.10.0-957.21.3.el7.x86_64] (local build)
Copyright (C) 2002-18, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: VK0480GECQP
Serial Number: S1KGNYAH241630
LU WWN Device Id: 5 002538 50037aa42
Firmware Version: HPG3
User Capacity: 480,103,981,056 bytes [480 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 6
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Sun Oct 27 10:59:02 2019 WIB
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART Status not supported: Incomplete response, ATA output registers missingSMART overall-health self-assessment test result: PASSED
Warning: This result is based on an Attribute check.
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: ( 2100) seconds.
Offline data collection
capabilities: (0x53) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
No 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 35) 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: 1
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 200 200 002 Pre-fail Always - 0
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
9 Power_On_Hours 0x0032 095 095 000 Old_age Always - 20928
173 Unknown_Attribute 0x0033 098 098 005 Pre-fail Always - 311
175 Program_Fail_Count_Chip 0x0033 100 100 001 Pre-fail Always - 0
180 Unused_Rsvd_Blk_Cnt_Tot 0x003b 100 100 097 Pre-fail Always - 0
194 Temperature_Celsius 0x0022 068 053 000 Old_age Always - 32
196 Reallocated_Event_Count 0x0033 100 100 005 Pre-fail Always - 0
202 Unknown_SSD_Attribute 0x0033 100 100 010 Pre-fail 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 Extended offline Completed without error 00% 17877 -
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
255 0 65535 Read_scanning was never started
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.How to use Smartmontools on LSI Megaraid SAS RAID controller Dell PERC
# smartctl -a -d megaraid,0 /dev/sdXSmartmontools on LSI 3ware SATA RAID controller
# smartctl -a -d 3ware,0 /dev/twXSmartmontools on Areca SATA[/SAS] RAID controller
# smartctl -a -d areca,0 /dev/sgXCommandline Smartmontools on Adaptec SAS RAID controller
# smartctl -a -d aacraid,H,L,ID /dev/sdXYou can read more about Smartmontools on https://www.smartmontools.org
