attributes like POH played a heavy role in device failures. The massive Seagate 12TB ST12000NM0007 turned out to be the fastest to break, reaching an average age of 1 year and six months and a total of 2,023 failures. Power On Time Count is reliable for an accurate diagnosis of a written hard drive. If your computer suffers from a sudden power loss and the data in the. Google tested over 100,000 consumer grade serial and parallel ATA hard disks, finding evidence that S.M.A.R.T. over time, but you can improve the speed and efficiency of your hard drive. Once a drive has surpassed the 43,800 hour mark, it may no longer be classed as in "perfect condition". 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. It is used to predict drive failure, supported by manufacturers such as Samsung, Seagate, Toshiba, IBM ( Hitachi), Fujitsu, Maxtor, Kingston and Western Digital. attributes (originally known as IntelliSafe, before its introduction to the public domain on, by the computer hardware and software company Compaq), The power-on timer (Attribute 9 raw value) on my Maxtor disk acts strange. Most of your computers other components are purely electronic and can only be damaged by electronic means (such as a power surge). Im planning to use this hdd as a secundary drive to. and also it says more than 100 days Estimated remaining lifetime while all of my other drives say more than 1000 days. ![]() Power-on hours ( POH) is the length of time, usually in hours, that electrical power is applied to a device.Ī part of the S.M.A.R.T. Hello guys Im a bit worried because the 2TB HITACHI hdd (from 2010) I just bough from CEX it says 3068 days power on time, thats like 8 years and a half. Specifies how long the hard drive is inactive before the disk turns offĪdministrative Templates\System\Power Management\Hard Disk Settings\Turn Off the Hard Diskįor more information see Mobile Battery Life Solutions - A Guide for Mobile Platform Professionals.The length of time that electrical power is applied to a device The following table summarizes details of the HDD idle settings. I wrote down the values around midnight and when I checked again at noon, both drives' Power-On Hours value had increased by exactly 12 hours. System manufacturers should consider specifying shorter values when trying to achieve aggressive battery conservation on mobile PCs. The NAS runs 24/7 and I have noticed that the Power-On Hours value in CrystalDiskInfo has increased far too much compared to the actual time I had activity on the drives. We encourage system manufacturers to work with HDD vendors to determine the optimal HDD idle timeout value for specific devices.īy default, Windows Vista specifies moderately long HDD idle timeout values. Once a drive has surpassed the 43,800 hour mark, it may no longer be classed as in 'perfect condition'. Hard disk drives (HDDs) and solid-state drives (SSDs). 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. The power savings that are realized when the HDD media is spun down varies by the make and model of the HDD. The type of storage your computer uses matters for performance, including power usage and reliability. For that matter, you can kill a drive by leaving it off and untouched. ![]() All the time using Adobe CS4/5 tons of rendering, downloads, installs, OS wipes and anything else you can think of I threw at these drives. As hard drive performance is one of the parameters which is often claimed to be almost-stagnant relative to processing power. From what I can tell, regularly turning a hard drive on and off can wear it down. Again, plugged in permanently to my Desktop and then my laptop which werent off very often. ![]() During HDD hibernation, drives stop spinning, reducing power. The HDD idle timeout allows Windows to automatically spin down the HDD media after a period of disk read and write inactivity. THAT drive (has a Samsung 2.5' 5400rpm drive) is at 42,305 power on hours (1762 days or 4.82 years). You can specify the period of time drives remain idle before entering HDD hibernation mode. ![]() Although the hard disk drive (HDD) is not the primary power consumer in the typical mobile PC, power savings can be realized by spinning down the HDD media.
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