SMART Spin up vs Power on Time

[MarkCasazza]

I recently acquired 4 pulled drives. I am interpreting the values telling me the drives were powered on for 5 years, but not spinning.

Spin up time 55834575339 (1.77years)
Power-on time 42931 (4.9 years)

Since the drive spun up when I powered it, one previous spin up time was at least 3.54 years.

Am I interpreting this correctly?

 

[CountMike]

HD Sentinel ? Those are binary values.

 

[MarkCasazza]

I got those values from the "Get SMART Data" feature in HDDGuru's Low Level Format tool. I converted the raw data into Years. Since the Spin up time is "average" 1.77 Years as an average value when I know the drive just spun up in seconds tells me depending on how many data point are in the average it spent 3 years not spinning or more probably 5 years powered on and not spinning. I know that i how I always built my RAID solutions. The hot spare drive was usually sitting there with power but not spinning until it was needed. I'm looking to confirm my interpretation because I can still return these drives. I will pin one up a few time to see if I can figure out how many values get averaged.

 

[CountMike]

Spin up and down can occur many times a day in the windows because of power saving features.

 

[MarkCasazza]

I think everyone is missing my question. Sorry for not being direct. Are these values an indication that the drives spent their 5 years of being powered on not spinning? If not, I really don't want to install 4 drives that have been spinning for 5 years as they are at the end of their life, but if they were sitting idle but powered on I think they have several years left.

 

[CountMike]

If those calculations are right it did spend 4.9 years powered on but mostly in idle state and actually did some work (reading/writing) in total of 1.7 years.
SMART can't note anything unless HDD is actually powered on.
To me it looks like it spent it's life time in some kind of recorder. TV or security camera.
Crystal Disk Info gives you more clear data for number of "Power on count" and "Power on Hours" without having to calculate from binary/hex values in SMART data.