How do I get detailed SMART disk information on OS X (Mavericks or later)
I'm trying to get a detailed SMART status report on the drives in my Mac. I'm not talking about "Verified," I'm talking about the detailed report that's about 100 lines long listing all the vital statistics of the drive.
Anyone know how to do this with diskutil? If diskutil can't do it is there a different free tool I can use?
I recently had the same question and found a command line tool www.smartmontools.org which can be installed via brew:
brew install smartmontools
Also via MacPorts:
sudo port install smartmontools
you can then run it
smartctl -a disk0s3
for the full report where disk0s3 is the disks physical backing which can be found in Disk Utility.app by getting info on the drive. (or via diskutil list on command line.) Here is an example of the output:
smartctl 6.2 2013-07-26 r3841 [x86_64-apple-darwin13.1.0] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Samsung based SSDs
Device Model: Samsung SSD 840 Series
Serial Number: S14LNEAD609248A
LU WWN Device Id: 5 002538 5503acd2e
Firmware Version: DXT08B0Q
User Capacity: 500,107,862,016 bytes [500 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: Thu Jun 19 16:34:10 2014 MDT
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: (53956) 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: ( 70) 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
5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0
9 Power_On_Hours 0x0032 099 099 000 Old_age Always - 2379
12 Power_Cycle_Count 0x0032 098 098 000 Old_age Always - 1579
177 Wear_Leveling_Count 0x0013 096 096 000 Pre-fail Always - 38
179 Used_Rsvd_Blk_Cnt_Tot 0x0013 100 100 010 Pre-fail Always - 0
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
187 Uncorrectable_Error_Cnt 0x0032 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x0032 059 039 000 Old_age Always - 41
195 ECC_Error_Rate 0x001a 200 200 000 Old_age Always - 0
199 CRC_Error_Count 0x003e 100 100 000 Old_age Always - 0
235 POR_Recovery_Count 0x0012 099 099 000 Old_age Always - 1571
241 Total_LBAs_Written 0x0032 099 099 000 Old_age Always - 14090964124
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
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.
Here's two extra nuggets of knowledge that may be of assistance:
the
smartmontoolspackage is also available under MacPorts. If you have MacPorts installed,sudo port install smartmontoolswill do the trickthe
dfcommand will quickly give you an idea of what is mounted where.
Extending on Lee Joramo's excellent answer you can install the GSmartControl GUI on top of smartmontools. It comes in a Homebrew tap.
So the procedure is:
brew install smartmontools
brew install gsmartcontrol
gsmartcontrol
Or, if you use MacPorts:
sudo port install gsmartcontrol
(which will automatically install smartmontools as a dependency)
BTW: I had to activate SMART first. The GUI can do that for you. If you want to use the command line it is smartctl -s on -a disk0s2.
Quite new and compatible with MacOS Sierra, Yosemite and El Capitan option:
Get native precompiled package from https://sourceforge.net/projects/smartmontools/
Install it, open Terminal and run:
sudo /usr/local/sbin/smartctl -a /dev/disk0
You will get full output like this:
smartctl 6.5 2016-05-07 r4318 [Darwin 16.3.0 x86_64] (sf-6.5-1)
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: Crucial_CT500MX200SSD1
Serial Number: 16151248FBA4
...
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)
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
...
and following rest of SMART information. Hope this helps to users who want simple solution.
Some additional information running smartctl 7.1 on macOS 10.15 (Catalina)+
Behaviour / output varies if SSD types are different, e.g. NVMe vs SATA/SATA Express
NVMe
MacBookPro14,3 (NVMe) 512GB SM0512L, smartctl actually can retrieve a field named Data Units Written which is equivalent to Total LBAs Written.
Link Width: x4
Link Speed: 8.0 GT/s
# smartctl output
smartctl -a /dev/disk0
smartctl 7.1 2019-12-30 r5022 [Darwin 19.5.0 x86_64] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Number: APPLE SSD SM0512L
Serial Number: C0281xxxxxxxx2
Firmware Version: CXS5EA0Q
PCI Vendor/Subsystem ID: 0x144d
IEEE OUI Identifier: 0x002538
Controller ID: 2
Number of Namespaces: 1
Local Time is: Thu Jul 2 12:05:31 2020 AEST
Firmware Updates (0x06): 3 Slots
Optional Admin Commands (0x0006): Format Frmw_DL
Optional NVM Commands (0x001f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat
Maximum Data Transfer Size: 256 Pages
Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
0 + 6.00W - - 0 0 0 0 5 5
1 - 0.0400W - - 1 1 1 1 210 1200
2 - 0.0050W - - 2 2 2 2 1900 5300
=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
SMART/Health Information (NVMe Log 0x02)
Critical Warning: 0x00
Temperature: 35 Celsius
Available Spare: 100%
Available Spare Threshold: 10%
Percentage Used: 1%
Data Units Read: 45,208,642 [23.1 TB]
Data Units Written: 44,739,539 [22.9 TB]
Host Read Commands: 1,440,047,433
Host Write Commands: 833,678,921
Controller Busy Time: 1,952
Power Cycles: 7,356
Power On Hours: 1,190
Unsafe Shutdowns: 47
Media and Data Integrity Errors: 0
Error Information Log Entries: 0
Read Error Information Log failed: NVMe admin command:0x02/page:0x01 is not supported
SATA / SATA Express via AHCI
(Mid 2015) MacBookPro11,5 (under SATA/SATA Express but still PCIe based SSD) 512GB SM0512G
- physical interconnect - PCI
- AHCI 1.30 though
175 Host_Writes_MiB is the key.
terrywang@ninja:~$ smartctl -a /dev/disk0
smartctl 7.1 2019-12-30 r5022 [Darwin 19.5.0 x86_64] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Apple SD/SM/TS...E/F/G SSDs
Device Model: APPLE SSD SM0512G
Serial Number: S------------63
LU WWN Device Id: 5 002538 900000000
Firmware Version: BXW1SA0Q
User Capacity: 500,277,790,720 bytes [500 GB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: Solid State Device
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4c
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Thu Jul 2 12:17:35 2020 AEST
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: ( 0) 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: ( 10) minutes.
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 0x001a 200 200 000 Old_age Always - 0
5 Reallocated_Sector_Ct 0x0033 100 100 000 Pre-fail Always - 0
9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 5303
12 Power_Cycle_Count 0x0032 067 067 000 Old_age Always - 32789
169 Unknown_Apple_Attrib 0x0013 239 239 010 Pre-fail Always - 3629423527808
173 Wear_Leveling_Count 0x0032 196 196 100 Old_age Always - 21484011576
174 Host_Reads_MiB 0x0022 099 099 000 Old_age Always - 26175030
175 Host_Writes_MiB 0x0022 099 099 000 Old_age Always - 19170887
192 Power-Off_Retract_Count 0x0012 099 099 000 Old_age Always - 48
194 Temperature_Celsius 0x0022 073 018 000 Old_age Always - 27 (Min/Max 9/82)
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
199 UDMA_CRC_Error_Count 0x001a 200 200 000 Old_age Always - 0
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]
Warning! SMART Selective Self-Test Log Structure error: invalid SMART checksum.
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.
Samsung SSDs - How Magician software calculates health status
Samsung Magician simply use a SSD's TBW as health indicator, for example, 850 EVO 250GB (designed TBW 75GB)
2.56TB / 75TB = 3.41% of its designed capacity.
NOTE: On Linux (or Windows), S.M.A.R.T. - ID 241
Total LBAs Writtenis the one to look at, but please be aware it reports the number of 512-byte sectors, you'll need to do math to convert to TB or TiB.
Formula: (Total_LBAs_Written * sector size) / 1024^4 = TiB Convert TiB to TB (facepalm) / TBW -> % designed lifespan