Hey! I encountered SMART errors when trying to run the long test for my SSD. I started troubleshooting those but I don’t really understand the SMART statistics too well. To me it seems like there isn’t a critical issue here but for some reason the long test fails. Somewhere on the internet I saw that this could be a general issue with Sandisk drives if you haven’t updated the firmware which I haven’t done. So far I’ve only encountered one data issue during the past +6 months.
But the more interesting / concerning thing was the error log. To me it seems like the power on lifetime has been reset at some point and the log contains errors older than the drive itself. This is the part that confused me. For context, I bought the drive from Amazonde at the beginning of 2019 so a bit over 6 years ago. The errors are from ~7 years ago. The overall power on time seems a bit low to me but this disk was in my desktop until 6 months ago. Am I just misinterpreting the log or has Amazon sold me a refurbished SSD as a new one without informing me about it?
sudo smartctl -x /dev/sde
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.6.44-production+truenas] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Marvell based SanDisk SSDs
Device Model: SanDisk SSD PLUS 1000GB
Serial Number: 184768449212
LU WWN Device Id: 5 001b44 4a9f70a8d
Firmware Version: UH4400RL
User Capacity: 1,000,207,286,272 bytes [1.00 TB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
TRIM Command: Available, deterministic
Device is: In smartctl database 7.3/5528
ATA Version is: ACS-2 T13/2015-D revision 3
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Wed Jun 25 22:05:11 2025 EEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
AAM feature is: Unavailable
APM feature is: Disabled
Rd look-ahead is: Enabled
Write cache is: Enabled
DSN feature is: Unavailable
ATA Security is: Disabled, frozen [SEC2]
Wt Cache Reorder: Unavailable
=== 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: ( 120) seconds.
Offline data collection
capabilities: (0x15) SMART execute Offline immediate.
No Auto Offline data collection support.
Abort Offline collection upon new
command.
No Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
No 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: ( 255) minutes.
SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
5 Reallocated_Sector_Ct -O--CK 100 100 000 - 0
9 Power_On_Hours -O--CK 100 100 000 - 7441
12 Power_Cycle_Count -O--CK 100 100 000 - 1437
165 Total_Write/Erase_Count -O--CK 100 100 000 - 1557
166 Min_W/E_Cycle -O--CK 100 100 --- - 10
167 Min_Bad_Block/Die -O--CK 100 100 --- - 0
168 Maximum_Erase_Cycle -O--CK 100 100 --- - 23
169 Total_Bad_Block -O--CK 100 100 --- - 542
170 Unknown_Marvell_Attr -O--CK 100 100 --- - 0
171 Program_Fail_Count -O--CK 100 100 000 - 0
172 Erase_Fail_Count -O--CK 100 100 000 - 0
173 Avg_Write/Erase_Count -O--CK 100 100 000 - 10
174 Unexpect_Power_Loss_Ct -O--CK 100 100 000 - 35
184 End-to-End_Error -O--CK 100 100 --- - 0
187 Reported_Uncorrect -O--CK 100 100 000 - 9
188 Command_Timeout -O--CK 100 100 --- - 0
194 Temperature_Celsius -O---K 065 078 000 - 35 (Min/Max 14/78)
199 SATA_CRC_Error -O--CK 100 100 --- - 0
230 Perc_Write/Erase_Count -O--CK 100 100 000 - 1068 512 1068
232 Perc_Avail_Resrvd_Space PO--CK 100 100 005 - 100
233 Total_NAND_Writes_GiB -O--CK 100 100 --- - 10471
234 Perc_Write/Erase_Ct_BC -O--CK 100 100 000 - 24342
241 Total_Writes_GiB ----CK 100 100 000 - 9874
242 Total_Reads_GiB ----CK 100 100 000 - 8922
244 Thermal_Throttle -O--CK 000 100 --- - 0
||||||_ K auto-keep
|||||__ C event count
||||___ R error rate
|||____ S speed/performance
||_____ O updated online
|______ P prefailure warning
General Purpose Log Directory Version 1
SMART Log Directory Version 1 [multi-sector log support]
Address Access R/W Size Description
0x00 GPL,SL R/O 1 Log Directory
0x01 SL R/O 1 Summary SMART error log
0x02 SL R/O 1 Comprehensive SMART error log
0x03 GPL R/O 16 Ext. Comprehensive SMART error log
0x04 GPL,SL R/O 8 Device Statistics log
0x06 SL R/O 1 SMART self-test log
0x07 GPL R/O 1 Extended self-test log
0x10 GPL R/O 1 NCQ Command Error log
0x11 GPL R/O 1 SATA Phy Event Counters log
0x30 GPL,SL R/O 9 IDENTIFY DEVICE data log
0x80-0x9f GPL,SL R/W 16 Host vendor specific log
0xa1 GPL,SL VS 1 Device vendor specific log
0xa2 GPL,SL VS 2 Device vendor specific log
0xa3-0xa4 GPL,SL VS 1 Device vendor specific log
0xa7 GPL,SL VS 1 Device vendor specific log
0xa9 GPL,SL VS 3 Device vendor specific log
SMART Extended Comprehensive Error Log Version: 1 (16 sectors)
Device Error Count: 12
CR = Command Register
FEATR = Features Register
COUNT = Count (was: Sector Count) Register
LBA_48 = Upper bytes of LBA High/Mid/Low Registers ] ATA-8
LH = LBA High (was: Cylinder High) Register ] LBA
LM = LBA Mid (was: Cylinder Low) Register ] Register
LL = LBA Low (was: Sector Number) Register ]
DV = Device (was: Device/Head) Register
DC = Device Control Register
ER = Error register
ST = Status register
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 12 [1] occurred at disk power-on lifetime: 7420 hours (309 days + 4 hours)
When the command that caused the error occurred, the device was doing SMART Offline or Self-test.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
40 -- 51 00 00 00 00 00 00 08 00 a0 00
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
ea 00 00 00 00 00 00 00 00 00 00 a0 00 13d+02:23:05.801 FLUSH CACHE EXT
2f 00 00 00 01 00 00 00 00 08 30 a0 00 8d+17:33:56.522 READ LOG EXT
ea 00 00 00 00 00 00 00 00 00 00 a0 00 8d+17:33:56.021 FLUSH CACHE EXT
2f 00 00 00 01 00 00 00 00 08 30 a0 00 8d+06:19:57.336 READ LOG EXT
ea 00 00 00 00 00 00 00 00 00 00 a0 00 8d+06:19:56.991 FLUSH CACHE EXT
Error 11 [0] occurred at disk power-on lifetime: 7316 hours (304 days + 20 hours)
When the command that caused the error occurred, the device was active or idle.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
40 -- 51 00 04 00 00 00 00 08 04 a0 00 Error: UNC
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
2f 00 00 00 01 00 00 00 00 08 30 a0 00 8d+17:33:56.522 READ LOG EXT
ea 00 00 00 00 00 00 00 00 00 00 a0 00 8d+17:33:56.021 FLUSH CACHE EXT
2f 00 00 00 01 00 00 00 00 08 30 a0 00 8d+06:19:57.336 READ LOG EXT
ea 00 00 00 00 00 00 00 00 00 00 a0 00 8d+06:19:56.991 FLUSH CACHE EXT
ea 00 00 00 00 00 00 00 00 00 00 a0 00 3d+10:03:10.808 FLUSH CACHE EXT
Warning! SMART Extended Comprehensive Error Log Structure error: invalid SMART checksum.
Error 10 [63] occurred at disk power-on lifetime: 61166 hours (2548 days + 14 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
00 -- 00 00 00 00 00 00 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
00 00 00 00 00 00 00 00 00 00 00 00 45 16d+13:40:55.765 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 44 13d+06:08:44.612 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 43 9d+22:36:33.459 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 42 6d+15:04:22.306 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 41 3d+07:32:11.153 NOP [Abort queued commands]
Error 9 [62] occurred at disk power-on lifetime: 61166 hours (2548 days + 14 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
00 -- 00 00 00 00 00 00 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
00 00 00 00 00 00 00 00 00 00 00 00 35 16d+13:40:55.765 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 34 13d+06:08:44.612 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 33 9d+22:36:33.459 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 32 6d+15:04:22.306 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 31 3d+07:32:11.153 NOP [Abort queued commands]
Error 8 [61] occurred at disk power-on lifetime: 61166 hours (2548 days + 14 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
00 -- 00 00 00 00 00 00 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
00 00 00 00 00 00 00 00 00 00 00 00 25 16d+13:40:55.765 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 24 13d+06:08:44.612 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 23 9d+22:36:33.459 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 22 6d+15:04:22.306 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 21 3d+07:32:11.153 NOP [Abort queued commands]
Error 7 [60] occurred at disk power-on lifetime: 43981 hours (1832 days + 13 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
00 -- 00 00 00 00 00 00 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
00 00 00 00 00 00 00 00 00 00 00 00 15 16d+13:40:55.765 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 14 13d+06:08:44.612 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 13 9d+22:36:33.459 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 12 6d+15:04:22.306 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 11 3d+07:32:11.153 NOP [Abort queued commands]
Warning! SMART Extended Comprehensive Error Log Structure error: invalid SMART checksum.
Error 6 [59] occurred at disk power-on lifetime: 61166 hours (2548 days + 14 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
00 -- 00 00 00 00 00 00 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
00 00 00 00 00 00 00 00 00 00 00 00 45 16d+13:40:55.765 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 44 13d+06:08:44.612 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 43 9d+22:36:33.459 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 42 6d+15:04:22.306 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 41 3d+07:32:11.153 NOP [Abort queued commands]
Error 5 [58] occurred at disk power-on lifetime: 61166 hours (2548 days + 14 hours)
When the command that caused the error occurred, the device was in an unknown state.
After command completion occurred, registers were:
ER -- ST COUNT LBA_48 LH LM LL DV DC
-- -- -- == -- == == == -- -- -- -- --
00 -- 00 00 00 00 00 00 00 00 00 00 00
Commands leading to the command that caused the error were:
CR FEATR COUNT LBA_48 LH LM LL DV DC Powered_Up_Time Command/Feature_Name
-- == -- == -- == == == -- -- -- -- -- --------------- --------------------
00 00 00 00 00 00 00 00 00 00 00 00 35 16d+13:40:55.765 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 34 13d+06:08:44.612 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 33 9d+22:36:33.459 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 32 6d+15:04:22.306 NOP [Abort queued commands]
00 00 00 00 00 00 00 00 00 00 00 00 31 3d+07:32:11.153 NOP [Abort queued commands]
SMART Extended Self-test Log Version: 1 (1 sectors)
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed without error 00% 7424 -
# 2 Extended offline Fatal or unknown error 60% 7420 0
# 3 Extended offline Self-test routine in progress 70% 7419 -
# 4 Extended offline Self-test routine in progress 70% 7419 -
# 5 Extended offline Self-test routine in progress 90% 7417 -
# 6 Extended offline Self-test routine in progress 90% 7417 -
# 7 Extended offline Self-test routine in progress 90% 7417 -
# 8 Short offline Completed without error 00% 7352 -
# 9 Short offline Completed without error 00% 7328 -
#10 Short offline Completed without error 00% 7304 -
#11 Short offline Completed without error 00% 7280 -
#12 Short offline Completed without error 00% 7256 -
#13 Short offline Completed without error 00% 7232 -
#14 Short offline Completed without error 00% 7208 -
#15 Extended offline Fatal or unknown error 60% 7188 0
#16 Extended offline Self-test routine in progress 70% 7187 -
#17 Extended offline Self-test routine in progress 70% 7187 -
#18 Short offline Completed without error 00% 7184 -
#19 Short offline Completed without error 00% 7160 -
Selective Self-tests/Logging not supported
SCT Commands not supported
Device Statistics (GP Log 0x04)
Page Offset Size Value Flags Description
0x01 ===== = = === == General Statistics (rev 1) ==
0x01 0x008 4 1437 --- Lifetime Power-On Resets
0x01 0x010 4 7441 --- Power-on Hours
0x01 0x018 6 20708842850 --- Logical Sectors Written
0x01 0x028 6 18711685093 --- Logical Sectors Read
0x01 0x038 6 7443 --- Date and Time TimeStamp
0x05 ===== = = === == Temperature Statistics (rev 1) ==
0x05 0x008 1 35 --- Current Temperature
0x05 0x010 1 35 --- Average Short Term Temperature
0x05 0x018 1 - --- Average Long Term Temperature
0x05 0x020 1 76 --- Highest Temperature
0x05 0x028 1 29 --- Lowest Temperature
0x05 0x030 1 42 --- Highest Average Short Term Temperature
0x05 0x038 1 42 --- Lowest Average Short Term Temperature
0x05 0x040 1 36 --- Highest Average Long Term Temperature
0x05 0x048 1 36 --- Lowest Average Long Term Temperature
0x05 0x050 4 0 --- Time in Over-Temperature
0x05 0x058 1 95 --- Specified Maximum Operating Temperature
0x05 0x060 4 0 --- Time in Under-Temperature
0x05 0x068 1 0 --- Specified Minimum Operating Temperature
0x07 ===== = = === == Solid State Device Statistics (rev 1) ==
0x07 0x008 1 2 N-- Percentage Used Endurance Indicator
|||_ C monitored condition met
||__ D supports DSN
|___ N normalized value
Pending Defects log (GP Log 0x0c) not supported
SATA Phy Event Counters (GP Log 0x11)
ID Size Value Description
0x0003 2 0 R_ERR response for device-to-host data FIS
0x0004 2 0 R_ERR response for host-to-device data FIS
0x0006 2 0 R_ERR response for device-to-host non-data FIS
0x0007 2 0 R_ERR response for host-to-device non-data FIS
0x0009 2 2 Transition from drive PhyRdy to drive PhyNRdy
0x000a 2 3 Device-to-host register FISes sent due to a COMRESET
0x000f 2 0 R_ERR response for host-to-device data FIS, CRC
0x0012 2 0 R_ERR response for host-to-device non-data FIS, CRC
0x0001 2 0 Command failed due to ICRC error