Long backup time with pVHD

Discussion in 'Paragon Drive Backup Product Line' started by andb52, Jan 27, 2014.

  1. andb52

    andb52 Registered Member

    Joined:
    Jan 27, 2014
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    3
    Hello. I am currently using the Paragon Hard Disk Manager 14 Professional Demo. My intention is to buy it after I confirm that it works effectively to create incremental backups of various hard disks I have.

    The problem is this: it is taking forever to do an initial backup of a large drive. I have a 2 TB HDD, with approximately 1.5 TB of used space. I am trying to back it up to another 2 TB HDD in the same JBOD (connected to the computer by a USB 3.0 cable). After 12 hours, it says it still has 16 more hours to go.

    By contrast, if I do a "normal" PBF backup, it takes a maximum of (I'm estimating) around 10 hours.

    Here's another wrinkle: when I backup the C drive, which is about 66 GB of used space, it completes in about 7 minutes.

    What is going on? Why is it so slow? Do you have any suggestions?

    I want to use pVHD because I want to create quicker and more efficient incremental backups.

    Any advice would be appreciated. I am on Windows 7 x64. Thank you.

    EDIT:

    As a little update, it seems to be going about 10 MB/s (e.g. after a second or so, the filesize of the pvhd jumps from 858,132,600 KB to 858,142,600 KB).

    EDIT 2:

    In the end, it took around 60 hours! Crazy.
     
    Last edited: Jan 29, 2014
  2. andb52

    andb52 Registered Member

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    In case anyone is interested, I discovered how to solve the problem. Instead of writing to one large file, I had it split the image into separate files (the default was to create 4 GB-sized files, and I stuck with that). It ended up taking 6 hours, which is awesome. I am now quite pleased.
     
  3. Robin A.

    Robin A. Registered Member

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    Feb 25, 2006
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    So, it seems to me that you got 40% less time that your expectation, or about 73 MB/sec average in a combined read/write operation. Do you attribute this to the pVHD format?
     
  4. andb52

    andb52 Registered Member

    Joined:
    Jan 27, 2014
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    Robin,

    I'm sorry I haven't checked this thread since my last post. In case you remain curious, yes, I definitely attribute the faster speed to the pVHD (I believe it was also advertised as such, which is why I was so keen on trying it). I highly recommend it!
     
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