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https://kb.acronis.com/content/9109
Description. Power-On Hours (POH) S.M.A.R.T. parameter indicates a count of hours in power-on state. The value of this attribute shows total count of hours (or minutes, or seconds, depending on manufacturer) in power-on state. A decrease of this attribute value to the critical level (threshold) indicates a decrease of the MTBF (Mean Time Between Failures).
https://superuser.com/questions/154465/hdd-health-power-on-count-hours
Update the question so it can be answered with facts and citations by editing this post . Closed 2 years ago. Improve this question. In this question i checked my HDD health on a drive i had for roughly a year. It has 188 power on count and 896 power on hours.
https://serverfault.com/questions/570756/smart-power-on-hours-attribute-for-different-hdd-manufacturers
Thus, if you do self-tests once per week at the same time, instead of the time-stamps being 168 hours apart, they are 157 hours apart. This is also fixed in all Maxtor disks manufactured after July 2003. Power_On_Hours Attribute of my new Intel SSD reports ~890000 hours. This is a bug in Intel 330 Firmware 300i and Intel 520 Firmware 400i.
https://www.tenforums.com/tutorials/163843-how-check-drive-health-smart-status-windows-10-a.html
https://serverfault.com/questions/664043/how-many-hours-of-smart-power-on-hours-use-should-a-new-hard-drive-have
Purchased a new HGST hard drive. Using smartctl on OS X the new drive shows 71 hours of power on hours. Does this make sense or is this a sign of a refurbished drive? I can't imagine why the manufacturer would need it powered on for almost 3 days. I can confirm these values are not minutes or seconds (they have not changed)
https://en.wikipedia.org/wiki/Power-On_Hours
Power-on hours is intended to indicate a remaining lifetime prediction for hard drives and solid state drives, generally, "the total expected life-time of a hard disk is 5 years" or 43,800 hours of constant use. Once a drive has surpassed the 43,800 hour mark, it may no longer be classed as in "perfect condition".
https://www.ghacks.net/2008/06/29/how-many-hours-have-your-hard-disks-been-running/
SSD : 14801 hours (616 days) Power On Count: 1810 /; Kingston SH10S3120G-NV 120 GB / Good (95%) 24 *C. HHD1 : 37491 hours (1562 days) Power On Count: 1133 /; WDC WD2500JS-55NCB1 250 GB / Good 46 *C. HHD2 : 29891 hours (1245 days) Power On Count: 3014 /; ST31500341AS 1500 GB / Caution 38 *C. This is my daily used computer.
https://www.techpowerup.com/forums/threads/refurbished-hard-drives-with-0-power-on-hours.258772/
I've read reviews of other buyers saying the same things (signs of use, but 0 hours). Basically, it seems they reset the SMART data. I'm curious if there is any way I can get the true SMART data from the drive and "correct" the power on hours. I don't care if they have a milllion hours, I just want it to be accurate. Thanks.
https://forums.anandtech.com/threads/is-crystaldiskinfos-power-on-hours-reading-accurate.2374615/
However, the 'power on hours' reading for my SSD is 193 hours, and for the HDD it's 221 hours! It would make a lot more sense IMO if those figures were the other way around. The 'power on count' is...
https://www.dolphindatalab.com/one-click-to-clear-hard-drive-smart/
Hard drive smart is one of the most important factors to judge the health of the hard drives. If it has values on different items contained in the Smart table, the drives are usually considered as second-hand hard drives. To refurbish the hard drives, the very first thing is to reset the smart. Smart table contains usually the following parameters:
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