Sectors written/read shown for an HDD?

[rcx]

Where does the info for Logical Sectors Written/Read come from, for HDDs?
It's not SMART, so some sort of Windows counters?

 

[Martin]

That comes either from SMART or Device Statistics. The latter is not supported by most other tools, but unlike SMART it's a standardized format.

 

[rcx]

What's Device Statistics?

There are no such SMART stats on the specific HDD I'm looking at (are there any non-SSDs that report it?).

 

[Martin]

It's called ATA Device Statistics.
There are many drives which support this. Please post a screenshot of the drive details in main window.

 

[rcx]

Wow, strange. Thanks!

(By "non-SSDs that report it" I meant SMART attributes such as TBW.)

For future reference, if anyone arrives in this thread looking for info, the feature has been introduced in 2008's ATA ACS-2, under Annex A, A.5 Device Statistics (Log Address 04h). In the more recent ACS-4 it's under section 9.5.

By the way, funny that they limit some fields to 48-bit, like a repeat of old times. Reading/writing 512 petabytes is still a lot, but it's small enough to be surpassable in the foreseeable future.