Understanding .hdd files

[SaleB]

I have an .hdd file of a drive that is no longer available (returned through Samsung RMA). Is there a way to interpret the data stored in the file. Specifically I would like to know after how many power-on_hours and at which TB_written state it went from 100% to 99%.

The longer story is:
I had a 970 Evo Plus 500gb, that slowly lost health percent and when it got to 10% it locked itself in read-only mode 1165 days at 65tbw. The whole time Samsung Magician did not show any problems until the drive got locked. All the stories of people who should know better were "You should trust the official software and not some 3rd party software." The disk got RMA'd through Henaro and the replacement ended in a NUC (still works). The disk was replaced with a 970 Evo Plus 1TB. It also slowly lost percentages and finally locked itself at 709 days and 47tbw. That time I knew better than to trust OEM software so I cloned it to a new drive at 13% health. The disk was also successfully RMA'd through Henaro. I got the 990 as a replacement but I put a WD SN770 in the machine. WD is now 100/100 at 59 days and 3.41tbw, but it would give me peace of mind if I knew that the 970 has already started to decline after two months of use. The question with which it would help is, can it be a motherboard controller problem, or is it more of Samsung NVMe problem.

I tried to understand the these fields, but did not come to a reasonable conclusion:

Code: Select all

[44705]
SMART=FF_1200=00_00,FF_1201=00_013C,FF_1203=00_64,FF_1204=00_0A,FF_1205=00_00,FF_1220=00_0000000000000000000000000006570D,FF_1230=00_00000000000000000000000000195B8E,FF_1240=00_000000000085BBD1,FF_1250=00_000000000299CE78,FF_1260=00_00000000000000000000000000000022,FF_1270=00_0000000000000000000000000000001E,FF_1280=00_00000000000000000000000000000019,FF_1290=00_0000000000000000000000000000000B,FF_12A0=00_00000000000000000000000000000000,FF_12B0=00_0000000000000000000000000000002C,FF_12C0=00_00000000,FF_12C4=00_00000000,FF_12C8=00_013C,FF_12CA=00_0147
THRESHOLDS=

Thank you

[hdsentinel]

Sorry to say, but these files designed to be used by Hard Disk Sentinel only, not for manual checking.

[SaleB]

Sorry to waste your time. I figured it out.

The third parameter for 970evo is available spare, starting with 64(hex), which is 100(dec), at [44705]. At [44846] it falls from 64(hex) to 62(hex), which makes it 142 days in between. That means that I have to wait for three more months to be certain that the motherboard had accepted the SSD.

Interestingly for most of the other drives, the .hdd file is gibberish, but fortunately for NVMe's, it is clear text.