TrueImage 9 file backup?

Discussion in 'Acronis True Image Product Line' started by Geto, Nov 4, 2005.

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  1. Geto

    Geto Registered Member

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    Hi,

    1) How file-level backup detects that file is changed, for what parameters-criteria?

    2) When I restore from file-based incremental snapshot, then how TrueImage
    processes files:
    *) does it deletes or not files from disk those not present in backup?
    *) does it overwrite files?

    Thank,
    G
     
  2. Geto

    Geto Registered Member

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    Hellooo.....sorry, but is this too hard question for us?
     
  3. Geto

    Geto Registered Member

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    Why TI manual dont say nothing about how file-level backup works:
    1) how it detects that files are changed?
    2) When I restore from file-based incremental snapshot, then how TrueImage
    processes files:
    *) does it deletes or not files from disk those not present in backup?
    *) does it overwrite files that are already present in partition?
    3) does it support open-file point-in-time backup?
     
  4. Geto

    Geto Registered Member

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    OK, I answer then myself:
    1) probably only with "archive flag" and no more
    2) *) not deleting
    *) overwriting
    3) not supported

    .........is this right?
     
  5. Acronis Support

    Acronis Support Acronis Support Staff

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    Hello Geto,

    Thank you for choosing Acronis Disk Backup Software.

    Please accept my apologies for the delay with the response.

    1. Acronis True Image 9.0 compares file modification dates.

    2. - No, Acronis True Image 9.0 does not delete files that are not present in the backup that is being restored (e.g. files that were added after the image has been created);

    - Yes, Acronis True Image 9.0 overwrites files that are being restored over the other files with same file names (e.g. when you select "restore to original location" option);

    3. I'm afraid that it is not clear for me what exactly do you mean by "open-file point-in-time backup". However, if I nderstand you correctly then the answer is yes, since Acronis True Image 9.0 allows you to schedule a task for the file-based back up of files that are currently in use (so-called open files). If that's not the case then please desribe your third question in more words. I will certainly answer it.

    Thank you.
    --
    Alexey Popov
     
  6. Geto

    Geto Registered Member

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    But if modification date is older (example I copy to patrition some old file version that stay important for me) than in backup, then TI backs up it or not?

    But if file is exactly identical, then TI still overwrites it or not.

    Is this forum also for enterprise clients or I am totally in wrong place with my
    wrong questions. But Acronis have also server version, so...."open file backup" is standard technique, present in every enterprise-class software.
    "open file backup" providers can be software or hardware. Backup software
    presents its own provider and also administrators can choose others.
    Also Microsoft present its own "open file backup" provider called VolumeShadowCopy with 2003 servers. I havent time to explain how this technique works, but it is also "point in time" ready and implemented by kernel-mode filesystem filter drivers. Acronis uses it also, but with sector-based backup and its some different than file-level. Without it there is at all
    implssible to backup live operating system session, system state or any open
    file. But now we talk about TI file-level backup.

    About sheduling open files copying - there is very few chances that while one live session those files becomes closed. Whyle reboot there is also no chance to schedule this copying because those same files opened again before backup soft can be even access them (example drivers).
    Another problem with scheduling is that then those scheduled for copying files arent anymore consistent with other files backed up earlyer - partition point-in-time backup principle does not exist anymore.

    ....but how exactly TI schedules open files copying?

    G
     
  7. Acronis Support

    Acronis Support Acronis Support Staff

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    Hello Geto,

    1. Well, it does not matter if the file is older then the same file already residing in the initial full image. The main criterion is that the file has been changed. If yes, then it will be added to the incremental image. The same is for differential images.

    Please also note that since you have created an incremental image, Acronis True Image 9.0 will suggest you a few restore points. Thus you will be able to revert to any state this particular file has.

    2. Yes, it will overwrite these files anyway.

    3. I'm sorry for misunderstanding. Now your question is clear to me. I'm afraid that neither Acronis True Image 8.0 Server for Windows nor Acronis True Image 8.0 Enterprise Server for Windows support open-file point-in-time backup. This feature will be implemented in the future versions of these products, but exact time frame is not decided yet.

    Yes, this forum is for every person interested in Acronis software incliding our enterprise clients.

    If you have any further questions please feel free to ask.

    Thank you.
    --
    Alexey Popov
     
    Last edited: Nov 11, 2005
  8. Geto

    Geto Registered Member

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    Thank You for answer!

    Yes, its good decision
    If you can then please talk for Acronis programmers that overwriting
    files exactly the same contents (same modified date,size,creation date)
    isnt nessesary - this only wastes restoration time. And also good idea is to
    delete files from partition (while file-level restore) those wasnt present while
    incremental backup was performed.
    Its completely OK, I just afraid .....maybe you forget it :D
     
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