How long do your image backups take - Full Disk vs Diff vs Increment? Solved

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  1.    #11

    Helmut said: View Post
    In post #9 you have mistakenly quoted your Macrium speeds as 574 MB/s and 81 MB/s, those are bits not Bytes.
    so 574 Mb/s and 81 Mb/s.
    Divide by 8 to get MB/s.
    I have looked at my Macrium logs most recent image (230 GB) and the numbers are:
    I/O performance: Read 748 Mb/s - Write 187 Mb/s
    Image and Verification Completed Successfully in 04:36:27
    Thanks for the feedback...

    My units are actually correct. I always change the MReflect units to MB/s as I find it easier to visualize. Attached a picture of my log file...


    Click image for larger version. 

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    Last edited by KabyBlue; 02 Feb 2019 at 08:06.
      My ComputerSystem Spec


  2. Posts : 1,090
    Windows 10
       #12

    Ah yes, there it is in the Advanced Options/settings, never knew that, don't understand the other options.
      My ComputerSystem Spec

  3. jimbo45's Avatar
    Posts : 6,740
    Windows / Linux : Centos, Ubuntu, OpenSuse
       #13

    Hi there
    If you just image the OS (have on separate HDD or partition) you shoulfn't need anything like imaging 230 GB -- a typical windows installation will be around 60 GB which will image to around 40GB and take minutes even on modest hardware.

    For data etc it's another issue and this is where incremental / differentials come into play -- unless you do a lot data editing etc after the initial backup these shouldn't take more than minutes either -- you shouldn't need to full copy / image data disks very often -- say once a month or so if your incrementals / differentials are fairly small.

    Convention though for speed is usually Mb/s is bits whereas the capital B (MB/s is bytes) although this is kept in determining or expressing Internet and network speeds there's real confusion when it comes to data transfer via programs like Macrium.

    Cheers
    jimbo
      My ComputerSystem Spec

  4. storageman's Avatar
    Posts : 569
    Windows 10 Pro 1809 17763.379
       #14

    @KabyBlue Looks like the bottle neck is in writing your image. 81MB/s is pretty slow. Probably due to the WD Passport device. They use the slowest Hard drives (probably 5400rpm's) and maybe what chipset they use for USB Interface (There are fast ones & slow ones).
      My ComputersSystem Spec

  5.    #15

    storageman said: View Post
    @KabyBlue Looks like the bottle neck is in writing your image. 81MB/s is pretty slow. Probably due to the WD Passport device. They use the slowest Hard drives (probably 5400rpm's) and maybe what chipset they use for USB Interface (There are fast ones & slow ones).
    Yeah I figured as much. Hopefully when SSD price/GB drop further down, I can afford a 2-4TB external SSD
      My ComputerSystem Spec

  6.    #16

    jimbo45 said: View Post
    If you just image the OS (have on separate HDD or partition) you shoulfn't need anything like imaging 230 GB -- a typical windows installation will be around 60 GB which will image to around 40GB and take minutes even on modest hardware.

    For data etc it's another issue and this is where incremental / differentials come into play -- unless you do a lot data editing etc after the initial backup these shouldn't take more than minutes either -- you shouldn't need to full copy / image data disks very often -- say once a month or so if your incrementals / differentials are fairly small.
    Thnx for the input...

    I am a fan of the incremental backup strategy but also try to keep the amount of incremental images in a "chain-link" at a minimum (at most 3-5) at which point I just go ahead and create another full image backup.
      My ComputerSystem Spec


 
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