On 17/12/2020 20:32, bob prohaska wrote:
> SMART keeps some track of deterioration
> in mechanical drives, does it exist for SSDs?
Absolutely. It's mandatory more or less. It gives you error rates on all
the things you need to worry about. This drive has been going a shade
over 5 years of actual 'on' time as my linux desk top boot drive: data
is held on a server so it doesn't get much action. But logs are written
to this. So it has in fact more writes than reads! (9780 GB versus 5255GB)
It still reports 95% of its useful life left.
============================================
sudo smartctl -a /dev/sdb
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.19.0-32-generic] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: SandForce Driven SSDs
Device Model: KINGSTON SV300S37A120G
Serial Number: 50026B774A09C471
LU WWN Device Id: 5 0026b7 74a09c471
Firmware Version: 580ABBF0
User Capacity: 120,034,123,776 bytes [120 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: ATA8-ACS, ACS-2 T13/2015-D revision 3
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Fri Dec 18 00:31:42 2020 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: (0x02) Offline data collection activity
was completed without error.
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: (0x7d) SMART execute Offline immediate.
No Auto Offline data collection support.
Abort 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: ( 48) minutes.
Conveyance self-test routine
recommended polling time: ( 2) minutes.
SCT capabilities: (0x0025) SCT Status 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 0x0032 095 095 050 Old_age
Always - 2/30119639
5 Retired_Block_Count 0x0033 100 100 003 Pre-fail
Always - 0
9 Power_On_Hours_and_Msec 0x0032 047 047 000 Old_age
Always - 47131h+15m+31.470s
12 Power_Cycle_Count 0x0032 100 100 000 Old_age
Always - 552
171 Program_Fail_Count 0x000a 100 100 000 Old_age Always
- 0
172 Erase_Fail_Count 0x0032 100 100 000 Old_age Always
- 0
174 Unexpect_Power_Loss_Ct 0x0030 000 000 000 Old_age
Offline - 102
177 Wear_Range_Delta 0x0000 000 000 000 Old_age
Offline - 96
181 Program_Fail_Count 0x000a 100 100 000 Old_age Always
- 0
182 Erase_Fail_Count 0x0032 100 100 000 Old_age Always
- 0
187 Reported_Uncorrect 0x0012 100 100 000 Old_age Always
- 0
189 Airflow_Temperature_Cel 0x0000 029 045 000 Old_age
Offline - 29 (0 235 0 45 0)
194 Temperature_Celsius 0x0022 029 045 000 Old_age Always
- 29 (0 235 0 45 0)
195 ECC_Uncorr_Error_Count 0x001c 107 107 000 Old_age
Offline - 2/30119639
196 Reallocated_Event_Count 0x0033 100 100 003 Pre-fail Always
- 0
201 Unc_Soft_Read_Err_Rate 0x001c 107 107 000 Old_age
Offline - 2/30119639
204 Soft_ECC_Correct_Rate 0x001c 107 107 000 Old_age
Offline - 2/30119639
230 Life_Curve_Status 0x0013 100 100 000 Pre-fail Always
- 100
231 SSD_Life_Left 0x0013 095 095 010 Pre-fail Always
- 1
233 SandForce_Internal 0x0032 000 000 000 Old_age Always
- 23531
234 SandForce_Internal 0x0032 000 000 000 Old_age Always
- 9780
241 Lifetime_Writes_GiB 0x0032 000 000 000 Old_age Always
- 9780
242 Lifetime_Reads_GiB 0x0032 000 000 000 Old_age Always
- 5255
SMART Error Log not supported
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% 26355
-
# 2 Short offline Completed without error 00% 22020
-
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.
--
Of what good are dead warriors? … Warriors are those who desire battle
more than peace. Those who seek battle despite peace. Those who thump
their spears on the ground and talk of honor. Those who leap high the
battle dance and dream of glory … The good of dead warriors, Mother, is
that they are dead.
Sheri S Tepper: The Awakeners.
--- SoupGate-Win32 v1.05
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