SSD | Smartwerte | Added_Bad_Flash_Blk_Ct | Samsung 870 EVO 2TB

[Markus.Tenne]

Hallo,

ich habe in einem NAS seit 1,5 Jahren eine Samsung SSD 870 EVO 2TB am laufen. Die SSD ist zu 70% belegt, die Daten sind recht statisch und es kommen immer nur wenige Daten dazu bzw. werden geändert.

In den letzten 5 Monaten stieg der Wert für Added_Bad_Flash_Blk_Ct von 0 auf nun 12 an.
Dies soll die Anzahl der schlechten Blöcke anzeigen (number of bad flash blocks). Ich kann nur diesen Wert (12) nicht einschätzen, ob der momentane Wert somit "zu hoch" ist oder auch eine Anzahl von 500 defekten Blöcken noch ok wäre.

Alle anderen Werte sind unauffällig:

Reallocated_Sector_Ct ......... 0
Power_On_Hours ................ 11899
Wear_Leveling_Count ........... 2
Uncorrectable_Error_Cnt ....... 0
Airflow_Temperature_Cel ....... 32°
ECC_Error_Rate ................ 0
POR_Recovery_Count ............ 2
Total_LBAs_Written ............ 4 TB (9855067084)
Added_Bad_Flash_Blk_Ct ........ 12

Wie ist da eure Einschätzung?

Ergänzung (Donnerstag um 14:59)

Ich habe hier auch noch mal den kompletten Auswurf von smartctl:

root@nas / $ smartctl -a -d ata /dev/sata3

smartctl 6.5 (build date Sep 26 2022) [x86_64-linux-4.4.302+] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Samsung based SSDs
Device Model:     Samsung SSD 870 EVO 2TB
Firmware Version: SVT03B6Q
User Capacity:    2,000,398,934,016 bytes [2.00 TB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      2.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   Unknown(0x09fc), ACS-4 T13/BSR INCITS 529 revision 5
SATA Version is:  SATA >3.2 (0x1ff), 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Thu Feb 20 14:55:18 2025 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

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:        ( 160) 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   097   097   000    Old_age   Always       -       11900
 12 Power_Cycle_Count                                                0x0032   097   097   000    Old_age   Always       -       2746
177 Wear_Leveling_Count                                              0x0013   099   099   000    Pre-fail  Always       -       2
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   068   052   000    Old_age   Always       -       32
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       -       2
241 Total_LBAs_Written                                               0x0032   099   099   000    Old_age   Always       -       9855244602
252 Added_Bad_Flash_Blk_Ct                                           0x0032   100   100   000    Old_age   Always       -       12

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%     11790         -

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
  256        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.

 

[Inzersdorfer]

Runtime_Bad_Block = 0
Used_Reserved_Block_Count_Total: 0

SMART Error Log Version : 1
No Errors Logged

Es muß erst einmal die Relevanz des Eintrags ID252 ergründet werden.