SSD の寿命を Linux で判断する
SSD(Intel X25-M)で寿命を確認するには at nkjmkzk.net
$ sudo smartctl -i /dev/sdc -d sat -a
smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.18.0-13-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: SATA SSD
Serial Number: D61E076A1D2203758638
LU WWN Device Id: 5 000000 000000000
Firmware Version: SBFM10.6
User Capacity: 240,057,409,536 bytes [240 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Form Factor: < 1.8 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: Unknown(0x0ff8) (minor revision not indicated)
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Tue Jan 29 00:20:22 2019 JST
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: (65535) seconds.
Offline data collection
capabilities: (0x79) SMART execute Offline immediate.
No Auto Offline data collection 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: ( 4) minutes.
Extended self-test routine
recommended polling time: ( 32) minutes.
Conveyance self-test routine
recommended polling time: ( 8) minutes.
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 100 100 050 Pre-fail Always - 0
9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 6907
12 Power_Cycle_Count 0x0012 100 100 000 Old_age Always - 4379
168 Unknown_Attribute 0x0012 100 100 000 Old_age Always - 0
170 Unknown_Attribute 0x0003 093 093 010 Pre-fail Always - 180
173 Unknown_Attribute 0x0012 100 100 000 Old_age Always - 2490448
192 Power-Off_Retract_Count 0x0012 100 100 000 Old_age Always - 1372
194 Temperature_Celsius 0x0023 067 067 000 Pre-fail Always - 33 (Min/Max 33/33)
218 Unknown_Attribute 0x000b 100 100 050 Pre-fail Always - 0
231 Temperature_Celsius 0x0013 100 100 000 Pre-fail Always - 96
241 Total_LBAs_Written 0x0012 100 100 000 Old_age Always - 7107
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 0
Note: revision number not 1 implies that no selective self-test has ever been run
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.上の情報をどう読み取ればよいかわからなかったので、Windows 7 に CrystalDiskInfo をインストールして調べてみた。
「Crystal Disk Info」で、SSDの健康状態を把握しよう！ ｜ SSD徹底解説！
ただ、Wndows では ext4 が読み取れないので、下を参考に Ext2Fsd をインストールする。
ext4のパーティションをWindowsで読み書きする方法 | Linux Fan
以上の結果、下のように診断されました。
結果としては、Linux で smartctl を使ったのと同じ情報だが、なるほどこれはわかりやすい。
まだこの SSD は大丈夫みたいです。（2019/1/29）
