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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://serverfault.com/questions/570756/smart-power-on-hours-attribute-for-different-hdd-manufacturers
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. The offset is 894794 hours. See also ticket #289 and Intel SSD Toolbox SMART Attributes FAQ.
https://serverfault.com/questions/664043/how-many-hours-of-smart-power-on-hours-use-should-a-new-hard-drive-have
IMO anything over 10 is used. The last time I ran an extended "long" SMART Test around 3hrs. This does vary and a big difference from "short test". I bought a Seagate external portable 5TB from Amazon. I thought perhaps it was testing. Only if it was a small number of hours. In my case the drive has 1026 Hours powered on equals 42.x days.
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.tenforums.com/tutorials/163843-how-check-drive-health-smart-status-windows-10-a.html
Media Wearout Indicator (SSDs) or Power-On Hours Intel SSDs report a normalized value from 100, a new drive, to a minimum of 1. It decreases while the NAND erase cycles increase from 0 to the maximum-rated cycles.Previously (pre-2010) occasionally used for Power-On Hours (more typically reported in 0x09).
https://community.intel.com/t5/Solid-State-Drives/The-SMART-Power-on-hours-of-Intel-535-never-increased/td-p/674334
The SMART Power-on hours of Intel 535 never increased Jump to solution. Hi, I have an Intel 535 480GB drive (SSDSC2BW480H6), with firmware RG21. I found that the SMART attribute 0x09 "Power-on hours" stick to zero and never increased. In contrast, my other Intel driver functioned properly on this value, and the precision is down to milliseconds.
https://apple.stackexchange.com/questions/333201/what-is-the-unit-of-power-on-hours-in-smartctl
1 Answer 1. ActiveOldestVotes. 1. SMART Monitoring Tools. The smartctltool claims hours, so that suggests one or more of the following: A fault in the tool; A fault in your drive reporting firmware; Or that your drive was only activefor six hours during that period.
https://www.reddit.com/r/synology/comments/d6mvsw/can_smart_power_on_hourspower_cycle_count_be/
I've installed them today in a DS718+ and before start creating Volume I went for a SMART test. My surprise is that Power-on time on both drives is not near to zero, is 8.220 hours! Also, Power Cycle Count is 31 and 32 for "Brand new" drives that I've installed half an hour ago.
https://www.reddit.com/r/DataHoarder/comments/7lqeod/strange_smart_stats_power_on_count_vs_power_on/
The power on hours are way higher than expected, and the power on count is waaay lower than expected. What's up with this? ... Excited to work on new 1221+ and 3x8TB IronWolfs. One is DOA, next is smart-dead. 66,6% death rate out of the box. 567. 105 comments. share. …
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