Differential Backups

Discussion in 'Acronis True Image Product Line' started by martinlest, Apr 23, 2006.

Thread Status:
Not open for further replies.
  1. martinlest

    martinlest Registered Member

    Joined:
    Sep 26, 2004
    Posts:
    82
    Location:
    Hampshire, UK
    If I choose differential backup each time, I get a series of files, just as with incremental backups. Should I be deleting any earlier differential file before I point to the original image file and make a new one? Can't see this mentioned in the documentation (did I miss it? Sorry for posting here, if so!).

    Thanks,

    Martin
     
  2. Allen L.

    Allen L. Registered Member

    Joined:
    Sep 1, 2004
    Posts:
    335
    Location:
    -Close-
    For a restore using differential backups, because all *changed* files from the original exist on each newly made differential file, you only need your first *complete* image file and the last made differential backup file to make a successful restore. So if you have 6 files...the first being the original image and #6 being the last differential, that would be all you need to made a complete restore. You can delete file #2, 3, 4, and 5. Just be sure to keep #1 and the last made differential, in this case #6.

    ...Allen
     
  3. martinlest

    martinlest Registered Member

    Joined:
    Sep 26, 2004
    Posts:
    82
    Location:
    Hampshire, UK
    Thanks. That is how I had figured it: I tend to delete any previous differential files before I create a new one (differential) - but didn't want to come to grief if and when I need to restore!

    M. :)
     
  4. Chutsman

    Chutsman Registered Member

    Joined:
    Jun 17, 2005
    Posts:
    1,181
    Location:
    Brandon, Florida, USA
    You really should TEST a Restore now, when you don't need it, even if it means buying another hard drive. Even though you get the "Backup Successful" message, that doesn't mean it will give you a working Restore. Lots of messages here about people finding out the Restore didn't work when they really needed it.
     
  5. martinlest

    martinlest Registered Member

    Joined:
    Sep 26, 2004
    Posts:
    82
    Location:
    Hampshire, UK
    Oh, I almost always test the backups I make, to see if I can extract individual files or folders and so on. What I meant was I didn't want to delete a differential backup then find it had data I should have kept!

    Thanks for the advice,

    M.
     
  6. martinlest

    martinlest Registered Member

    Joined:
    Sep 26, 2004
    Posts:
    82
    Location:
    Hampshire, UK
    One other important thing occurs to me: if I delete folders and files after I make a full image, will those deletions be taken into account when I make a differential backup? In other words, if my main backup contains the folders/files, and later I make a differential backup after they've been removed from the drive, will a backup from the differential contain the deleted folders or not?

    thank you,

    M.
     
  7. Menorcaman

    Menorcaman Retired Moderator

    Joined:
    Aug 19, 2004
    Posts:
    4,661
    Location:
    Menorca (Balearic Islands) Spain
  8. martinlest

    martinlest Registered Member

    Joined:
    Sep 26, 2004
    Posts:
    82
    Location:
    Hampshire, UK
    Sorry - I didn't get any reply in this thread so thought I'd start a new one, as it is a different subject really anyway. I'll stick to the other thread now.

    M. :)
     
Thread Status:
Not open for further replies.