Questions about smart railway?

Question

Hard disks

MART 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       -       4
 12 Power_Cycle_Count       0x0032   099   099   000    Old_age   Always       -       4
177 Wear_Leveling_Count     0x0013   100   100   000    Pre-fail  Always       -       0
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 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0032   068   058   000    Old_age   Always       -       32
195 Hardware_ECC_Recovered  0x001a   200   200   000    Old_age   Always       -       0
199 UDMA_CRC_Error_Count    0x003e   100   100   000    Old_age   Always       -       0
235 Unknown_Attribute       0x0012   100   100   000    Old_age   Always       -       0
241 Total_LBAs_Written      0x0032   099   099   000    Old_age   Always       -       56654761

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  Extended offline    Completed without error       00%         3         -

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.

1) I take the value 56654761 * 512 \u003d 29007237632 bytes \u003d 27.015095234 GB why is this value?
And what is the norm, and what is not the norm for this disk (total volume 500GB), Samsung SSD 870 EVO
2) Is the badblock utility informative? Showed no bads.
3) Please tell me the current resuscitation flash drives for 2022, I used Heerens Lehapass, but on modern motherboards this no longer starts. Preferably with Victoria.
4) Bads 915780 on another disk appeared on the erase test (the rest of the read b tests, and did not show butterfly bads - this is how the hddscan utility from the assembly showed ). Naturally, I was confused by the difference in these troubles between 3 tests, why such differences?

Answer 1

27.015095234GB why such a value?

I believe because the drive was turned on 4 times and worked for 4 hours.

Utility XX - informative? Showed no bads.

Most likely yes, if she does full surface tests with sufficient detail. No, if it's the other way around.

It doesn't work on modern motherboards anymore. Preferably with Victoria

Official Hiren's was updated some time ago.
In order for everything to start and everything to be tested, take any worker and throw R.tester there . It will run on the most modern, incl. server hardware (on the old, by the way, too).
The program is portable by default, just unpack the archive.

I was confused by the difference in these troubles between 3 tests, why such differences?

Take R.tester above and do a full write test first (destroys data!), and then a full read test. This is the best test for the home.