How many hours have your hard disks been running?

Martin Brinkmann
Jun 29, 2008
Updated • Dec 18, 2012

Can you tell me how many hours your hard disk or Solid State Disk has been running and how many times it has been powered on since you started using it in your computer? My Samsung 1 TB hard drive was powered on 106 times and has been active for 814 hours since I build my new computer a few months ago.

How I know that? I looked it up in the software Crystal Disk Info. This software basically displays all kind of information about hard drives and Solid State Disks and two that are not displayed in every other of that type are the two I mentioned above.

It does display all the usual information as well. It begins with the hard disk temperature, serial number, transfer mode, drive letters and supported features among other parameters. Two of the aforementioned parameters are worth a closer look if you are experiencing crashes or slow downs.

The temperature of the hard drive can be a cause for system crashes. It if goes to high it can lead to data loss and errors. The transfer mode can be interesting if you think that your hard drive is not as fast as it should be. Check the supported transfer modes of your drive and compare them to the one that is currently being used for it. It might very well be that it's not the fastest available.

Crystal Disk Info is a portable application that is compatible to Windows 2000, XP, Vista and Windows Server 2003 / 2008.

Update: Crystal Disk Info has been updated regularly. The latest version 5.1.1. offers a similar feature set as the previously reviewed version but has been updated to include information about new hard drive technologies. What's interesting is that you still get the power on count and power on hours of each hard drive connected to your system, be it platter-based or solid state drive.

It pays to keep an eye on the stats to know when it is time to exchange the hard drive for a new one. I suggest you consult the manufacturer's recommendations which will tell you the average working hours for the company's hard drives.

The new version offers alerts which can be useful to receive information about a failing hard drive and lots of advanced features like changing a drive's automatic acoustic management (AAM) feature or advance power management (APM) values. The former lets you reduce the noise a drive makes which may have an effect on the drive's overall performance, the second a drive's power consumption.

Crystal Disk Info is a complete solution for managing the hard drives that are connected to your computer. Best of all, it is free to download and use.


Tutorials & Tips

Previous Post: «
Next Post: «


  1. Dan said on November 4, 2020 at 7:13 pm

    I don’t see any of this usage info on latest version, only stress test.

  2. Simon said on April 21, 2020 at 5:15 pm

    My Thinkpad from 2012, Power on Hours 12,597. Power cycles 13,164

  3. Anonymous said on December 27, 2018 at 7:14 pm

    i have a disk with more than 9 years of “on time” ,
    wich is more than 76112 hours
    CrystalDiskInfo 8.0.0 (C) 2008-2018 hiyohiyo
    Crystal Dew World :

    OS : Windows 7
    Date : 2018/12/27 19:06:21

    — Controller Map ———————————————————-
    + Intel(R) Desktop/Workstation/Server Express Chipset SATA RAID Controller [SCSI]
    – WDC WD740GD-50FLC0

    (1) WDC WD740GD-50FLC0
    Model : WDC WD740GD-50FLC0
    Firmware : 33.08F33
    Serial Number : WD-WMAKE2352619
    Disk Size : 74,3 GB (8,4/74,3/74,3/—-)
    Buffer Size : 8192 KB
    Queue Depth : 32
    # of Sectors : 145226112
    Rotation Rate : Unbekannt
    Interface : Serial ATA
    Major Version : ATA/ATAPI-6
    Minor Version : —-
    Transfer Mode : —- | SATA/150
    Power On Hours : 76112 Std.
    Power On Count : 1349 mal
    Temperature : 39 C (102 F)
    Health Status : Gut
    Features : S.M.A.R.T., AAM, 48bit LBA
    APM Level : —-
    AAM Level : 80FEh [OFF]
    Drive Letter : C:

    — S.M.A.R.T. ————————————————————–
    ID Cur Wor Thr RawValues(6) Attribute Name
    01 200 186 _51 000000000000 Lesefehlerrate
    03 109 108 _21 0000000013CA Mittlere Anlaufzeit
    04 _99 _99 _40 0000000006C5 Start/Stopp-Zyklen der Spindel
    05 200 200 140 000000000000 Wiederzugewiesene Sektoren
    07 100 253 _51 000000000000 Suchfehler
    09 __1 __1 __0 000000012950 Betriebsstunden
    0A 100 100 _51 000000000000 Misslungene Spindelanläufe
    0B 100 100 _51 000000000000 Nnotwendige Rekalibrierungen
    0C _99 _99 __0 000000000545 Geräte-Einschaltvorgänge
    C2 111 _94 __0 000000000027 Temperatur
    C4 200 200 __0 000000000000 Wiederzuweisungsereignisse
    C5 200 200 __0 000000000000 Aktuell ausstehende Sektoren
    C6 200 200 __0 000000000000 Nicht korrigierbare Sektoren
    C7 200 253 __0 000000000001 UltraDMA-CRC-Fehler
    C8 200 179 _51 000000000000 Schreibfehlerrate

  4. Nacho Morfeo said on April 28, 2018 at 5:39 am

    My oldest drive has 3.9 years of continuous running … (5 years of actual time) . Ye its time to retire that one , done his job well… now is a secondary drive.. a lot less use , but still…

  5. Anonymous said on January 31, 2018 at 10:28 pm

    Mine is WD caviar blue, bought about 10 years ago, running in my NAS, power on hours : 58420

  6. Voladon said on November 6, 2016 at 6:55 pm

    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.

  7. 1millionhours said on June 24, 2016 at 12:32 pm

    i have a toshiba hdd and it have 1043075 power on hours, something must be wrong
    1 . 0 4 3 . 0 7 5 hours (43461 days and 11 hours), and only have 5 years running non stop

  8. anon said on April 30, 2016 at 1:24 pm

    Seagate st3120022a, 93.000 hour… xD

  9. mmmmm said on February 17, 2016 at 5:54 pm

    #1 Hitachi hdd 49331 hours (system)
    #2 Hitachi hdd 32621 hours
    #3 New 2TB Hitachi about 150 hours (offline)
    #4 Hitachi hdd (offline) more than 40000 hours
    #5 Seagate IDE hdd 11440
    #6 External WD hdd about 1500 hours (archive)

    All drive are in good condition, without bad sectors and raw read error rate.

  10. Mark said on February 14, 2016 at 11:16 pm

    My WD Green has 41937 hours on the clock, a whooping 8979 power on count and the head has been parked / un-parked for “0000000823B2” – Or for those of you who don’t want to waste time converting it from hexi, 533426 times XD – Hard Disk Sentinel is telling me its death is imminent, Speed fan says it’s at “65% fitness, 85% performance” and Crystal Disk says it’s all “Good” … No reallocated sectors either which for the age of it is amazing! Having said that, I backup to two unlimited online cloud providers just in case!

  11. toodles said on December 1, 2015 at 11:30 pm

    So I’m guessing the “new” drive in my friend’s laptop, that shows 48 power ons and 1173 hours powered on, probably wasn’t actually new when it was installed a few days ago? mmm, mmm, mmm. Someone is going to be in twubble.

  12. wally said on October 27, 2015 at 4:51 am

    My WD greens went from cheap external enclosures my wife covered with blankets and literally cooked everything.

    The drives survived and were put into a Zyxel NSA320 and now have 27,000 and 29,500 hours respectively. These hours are over 4 years so you see they haven’t had much off time. I really respect and like my WD greens.

    I also have 30+ Seagate 3TB drives in various NAS units and they are great also.

  13. Joe said on June 22, 2014 at 3:05 am

    My WD800JD has 58913 on the clock, but it took 10 years to do so….stll runs fine. This discussion points to the value of setting the “Power off disk after” setting of Windows, even for systems that stay on all the time.

  14. MKM said on June 11, 2014 at 6:13 pm

    I HAVE a 640 Gb running For 420000 Hour ?!?!? opened More than 2100 times , TEMP 49-51C

    and i just got my Pc 3 years back is it normal ?

    1. Joe said on June 22, 2014 at 2:59 am

      Something not right about that, considering there is only 26280 hours in 3 years ;)

      My WD800JD has 59013 hours on the clock, but it took 10 years to get there… still running fine, no errors.

      This discussion points to the value of setting the “Power off disk after” parameter in Windows.

  15. Cat said on September 7, 2013 at 3:07 pm

    CrystalDiskInfo tried to install RealPlayer along with its own installation.

  16. matt said on September 18, 2011 at 6:48 pm

    Exellent program worked out how many hours my computer has done since I had it ( drive is origional fitment)
    Drive is Fujitsu MHT2080AT in Fujitsu Amilo D 1840W Approx 7yrs old.
    Power on 2203 , hours 15,400 works out at about 2,500 a year as its had hardly any use for last 18months. Now It cost more that alot of laptops did at the time but now I can see why as the only thing I have changed is added 512Mb memory!

  17. Derp said on April 12, 2011 at 7:22 pm

    2TB WD Green: 10201 hours, 168 power cycles
    1.5TB Seagate CC1J: 18342 hours, 528 power cycles
    1.5TB Seagate CC1H: 15171 hours, 352 power cycles

  18. Dragos said on January 21, 2011 at 7:33 pm

    I got 3 hdd! All WD.

    2 x 160gb and one 1Tb

    In order:

    28159 hours
    13503 hours
    7210 hours < 1Tb

    Non stop seeding!!!!! :)

  19. trssho91 said on May 22, 2010 at 4:49 am

    in my 24/7 server:
    120GB Western Digital: on 33588 hours, 237 power cycles
    160GB Seagate : on 16054 hours, 409 power cycles
    500GB Hitachi Deskstar: on 19034 hours, 128 power cycles
    500GB Western Digital : on 3215 hours, 30 power cycles

    all look good, plan to eventually replace the seagate mainly because i got it used and I dont like how seagates use some of the smart data (ie raw read error rates being a bogus value) – other than that, drives used daily – all temps average between 32-37 deg C – i think anything over 40 is a no no

  20. Anonymous said on April 1, 2010 at 4:50 pm

    i have 19,000 hours on my seatgate 80gb, still good for me

  21. Siken M.S. Dangol said on February 12, 2010 at 9:16 pm

    My Segate 80GB HDD has reached historical mark of 10,000 and still it is running without any problem.

    Click on the link to see

  22. BN said on November 24, 2008 at 11:23 pm

    something wrong with their download page

    here’s the direct link

  23. Simakuutio said on November 24, 2008 at 8:50 pm

    Duh… downloading from their site is failing…:

    Error in download_count on line 16.
    ./abcd/ is already defined.

    Well, maybe next time…

  24. Bruno said on June 30, 2008 at 8:54 am

    for me too, strange result for Power on Hours : 64?hours
    but it saids “caution” for my first hard drive, and I know that it’s true (power on count : 2549)

  25. Martin said on June 30, 2008 at 8:45 am

    That’s damn hot Litschi :)

  26. Litschi said on June 30, 2008 at 6:23 am

    I’ve tested it on 3 PCs and got always strange results, like this one… (link to image)

  27. Emil said on June 29, 2008 at 11:05 pm

    My my…

    2248 hours and 284 power ups for about 5 months, I need to use it less ???

  28. Womble said on June 29, 2008 at 8:11 pm

    My Raptor has done 8451 hours.

    interesting that my greenpower drive run’s a degree hotter than my raptor, but quite good when you factor that the green power is a 4 platter 1Tb drive the Raptor is of course single platter 36Gb drive.

  29. Dante said on June 29, 2008 at 5:57 pm

    Don’t need no steenkin software to tell me :)

    My harddrives are 24/7. That’s also why I no longer buy Western Digitals. They just plain sucks – built to crash.

  30. Martin said on June 29, 2008 at 5:25 pm

    Rarst it was shortly after system boot :)

  31. Rarst said on June 29, 2008 at 5:20 pm

    28781 hours for mine. Too lazy to look for purchase date, around 3+ years.

    Are you keeping yours in the freezer?.. :)

    >The temperature of the hard drive can be a cause for system crashes. It if goes to high it can lead to data loss and errors.

    Dumb IT mythology. I hadn’t ever seen HDD dead from thermal damage alone. You must practically fry it by running at 60+C to achieve overheat. Anything up to 50C is pretty comfortable temperature for HDD and it’s hard to get more in average computer case.

  32. Keule said on June 29, 2008 at 3:18 pm

    3,8 years on my side.

  33. Thinker said on June 29, 2008 at 11:03 am

    It don’t works with my 2×250 sata raid :(

    1. AtomicGecko said on January 25, 2011 at 12:46 am

      Open the program
      Goto > Function > Advanced Feature > Advanced Disk Search
      sees my SATA RAID now

  34. Martin said on June 29, 2008 at 10:39 am

    Cagliostro that’s a lot for a year I think ;)

  35. Cagliostro said on June 29, 2008 at 10:29 am

    My notebook hard disk was powered on 886 times and active 3615h. As it’s about a year old that’s more than i thought.

    1. ZR said on December 31, 2011 at 6:49 pm

      Maxtor Maxline Pro 500 ( 500gb sata) powered on 600 times and 38,443 hours temperature about 42C

      so 4.39years on time. Its in my Dell poweredge 700 Server. on 24/7 Clean it every 2 months

      Maxtor FTW

      1. Thunder said on December 25, 2019 at 9:47 am

        My WD harddrive powered on 6000 time and has about 46,952 hours of usage and hit temperatures of about 46C and it has many bad sectors and the thing is it is not even a server I use it daily it was bought back in 2011

Leave a Reply

Check the box to consent to your data being stored in line with the guidelines set out in our privacy policy

We love comments and welcome thoughtful and civilized discussion. Rudeness and personal attacks will not be tolerated. Please stay on-topic.
Please note that your comment may not appear immediately after you post it.