Win 10 reports bloated size on disk for NAS driveWhy is there such a big difference between “Size” and...

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Win 10 reports bloated size on disk for NAS drive


Why is there such a big difference between “Size” and “Size on disk”?Hard Drive Selection for NAS enclosureWhy is size on disk so large for a single file?NAS as normal storage drive?What does it mean if a hard disk is meant for NAS use?Folder Size 18.7gb but Size on disk 1.33TB - why/how could this have happened? Synology DS212 NAS RAIDSize vs Size on Disk Windows 10Hard drive requirments for a home NAS Streaming (Plex) serverReduce RAID 5 NAS size (and number of disks)Size and Size on Disk Massive BloatWindows 10 reports low disk space after filling up C:WindowsTemp













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My friend has a Buffalo TS1200D NAS which has three folders mapped to drives on her Win 10 desktop computer. When I look at the drive in "NAS Navigator2" it tells me the disk usage is

37.2 GB/1830.3 GB (2.0%).



I had a look because zipped back-ups were too big to upload to the cloud storage. As you'll see from the linked screenshot, in Windows, the largest mapped drive shows the following properties:




  • 28,254 files in 139 folders.

  • size = 33.0 GB

  • size on disk = 3.44 TB


Link to screenshot of Windows Properties



How can the size on disk be _SO_MUCH_ bigger than the file size?



How can the size on disk be reported as being bigger than the size of the disk?!



It seems it's way more than you'd expect from cluster sizes that I've read about elsewhere. Noting the answers to [this question] and assuming 32kB cluster size, the minimum size on disk would be:
28,254 x 32,000 = 0.9 GB

We seem to be in a completely different ball-park!



Other info: the NAS has 2 disks using RAID 1 and, to the best of my knowledge, all the default settings out of the box.



Any thoughts on this gratefully received :)










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    My friend has a Buffalo TS1200D NAS which has three folders mapped to drives on her Win 10 desktop computer. When I look at the drive in "NAS Navigator2" it tells me the disk usage is

    37.2 GB/1830.3 GB (2.0%).



    I had a look because zipped back-ups were too big to upload to the cloud storage. As you'll see from the linked screenshot, in Windows, the largest mapped drive shows the following properties:




    • 28,254 files in 139 folders.

    • size = 33.0 GB

    • size on disk = 3.44 TB


    Link to screenshot of Windows Properties



    How can the size on disk be _SO_MUCH_ bigger than the file size?



    How can the size on disk be reported as being bigger than the size of the disk?!



    It seems it's way more than you'd expect from cluster sizes that I've read about elsewhere. Noting the answers to [this question] and assuming 32kB cluster size, the minimum size on disk would be:
    28,254 x 32,000 = 0.9 GB

    We seem to be in a completely different ball-park!



    Other info: the NAS has 2 disks using RAID 1 and, to the best of my knowledge, all the default settings out of the box.



    Any thoughts on this gratefully received :)










    share|improve this question







    New contributor




    CGoodchild is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      0












      0








      0








      My friend has a Buffalo TS1200D NAS which has three folders mapped to drives on her Win 10 desktop computer. When I look at the drive in "NAS Navigator2" it tells me the disk usage is

      37.2 GB/1830.3 GB (2.0%).



      I had a look because zipped back-ups were too big to upload to the cloud storage. As you'll see from the linked screenshot, in Windows, the largest mapped drive shows the following properties:




      • 28,254 files in 139 folders.

      • size = 33.0 GB

      • size on disk = 3.44 TB


      Link to screenshot of Windows Properties



      How can the size on disk be _SO_MUCH_ bigger than the file size?



      How can the size on disk be reported as being bigger than the size of the disk?!



      It seems it's way more than you'd expect from cluster sizes that I've read about elsewhere. Noting the answers to [this question] and assuming 32kB cluster size, the minimum size on disk would be:
      28,254 x 32,000 = 0.9 GB

      We seem to be in a completely different ball-park!



      Other info: the NAS has 2 disks using RAID 1 and, to the best of my knowledge, all the default settings out of the box.



      Any thoughts on this gratefully received :)










      share|improve this question







      New contributor




      CGoodchild is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      My friend has a Buffalo TS1200D NAS which has three folders mapped to drives on her Win 10 desktop computer. When I look at the drive in "NAS Navigator2" it tells me the disk usage is

      37.2 GB/1830.3 GB (2.0%).



      I had a look because zipped back-ups were too big to upload to the cloud storage. As you'll see from the linked screenshot, in Windows, the largest mapped drive shows the following properties:




      • 28,254 files in 139 folders.

      • size = 33.0 GB

      • size on disk = 3.44 TB


      Link to screenshot of Windows Properties



      How can the size on disk be _SO_MUCH_ bigger than the file size?



      How can the size on disk be reported as being bigger than the size of the disk?!



      It seems it's way more than you'd expect from cluster sizes that I've read about elsewhere. Noting the answers to [this question] and assuming 32kB cluster size, the minimum size on disk would be:
      28,254 x 32,000 = 0.9 GB

      We seem to be in a completely different ball-park!



      Other info: the NAS has 2 disks using RAID 1 and, to the best of my knowledge, all the default settings out of the box.



      Any thoughts on this gratefully received :)







      hard-drive nas






      share|improve this question







      New contributor




      CGoodchild is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











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      Check out our Code of Conduct.









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      CGoodchild is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked 15 mins ago









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      CGoodchild is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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