A week ago I make a fresh OS install on a brand new ADATA SSD and wanted to check the TBW till now. Here is what I "found" in S.M.A.R.T.:
=== START OF INFORMATION SECTION === Device Model: ADATA SU800 Firmware Version: P1021A User Capacity: 512,110,190,592 bytes [512 GB] Sector Size: 512 bytes logical/physical Rotation Rate: Solid State Device Form Factor: 2.5 inches Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 241 Total_LBAs_Written 0x0000 100 100 000 Old_age Offline - 6548 Device Statistics (GP Log 0x04) Page Offset Size Value Flags Description 0x01 0x018 6 429149728 --- Logical Sectors Written
- Total_LBAs_Written: 6548
- Logical Sectors Written: 429149728
/dev/sda (field #10, "sectors written"): 923561758
One thing that I notice:
sudo dumpe2fs /dev/sda3 | grep "Filesystem created" returns
Sun Apr 15 01:12:02 2018 (which is when I install the OS) and till now ~253 hours has elapsed. But Power_On_Hours in S.M.A.R.T. tells 196 hours.
And here is the output of
Filesystem Size Used Avail Use% Mounted on /dev/sda1 464M 200M 236M 46% /boot /dev/sda3 454G 58G 373G 14% /
What I'm "sure" is that the TBW should be more than 80GB (there were some files that were temporary stored on the SSD).
So, how to check the TBW and which tool to trust?