Forum Discussion

snawaz3's avatar
snawaz3
Level 6
12 years ago

TIR with move detection

My backup policies contained TIR with move detection selected. I read that TIR does not allow file level restore. It allows only folder level restore. I unchecked TIR with move detection and ran a full backup. The backups do not contain all the folders. Why did this happen and how can I get my backup to backup all folders.

 

 

7.1.x and Earlier
Backup and Recovery
NetBackup
Windows Server (2003-2008)
  • Mark_Solutions's avatar
    Mark_Solutions
    12 years ago
    That is possible and known as incremental forever, but when it was first introduced there was a lot of talk about it and eventually the "advice" was to run a real one once a month to ensure you had a verified stable copy of the backup - the fear was that corruption could creep in I have some customers who only do a real one once a year but it is your choice how and if you do a real one Your real issue is that a job that takes 7 to 8 days is just unacceptable and really your place needs to invest in acheiving a better result than that - either by using multiple streams as we talked about in your other thread or by investing in de-dupe, or being able to use a snapshot technology on this data - even the Enterprise client to do flashbackup backups
  • revarooo's avatar
    revarooo
    Level 6
    12 years ago

    You can restore at file level with TIR enabled, you must select in the restore screen Standard rather than True Image. To restore TIR, you just select True Image Restore in the restore screen. Obviously you MUST have TIR enabled.

     

    As for you re-running a full with TIR disabled and it not backing everything up, did the job complete with a status 0? If not, we'd have to see the bpbkar log with trace logging enabled to see if files are skipped.

     

  • snawaz3's avatar
    snawaz3
    Level 6
    12 years ago
    The jobs completed with stauus 0. But when I go to BAR and and select restore from noemal backup I get the following in attached document. On 15 I had dome a backup with TIR with move detection checked. On 27 I did a backup with TIR with move detection unchecked. I am missing a lot of files on the 27.
  • Mark_Solutions's avatar
    Mark_Solutions
    Level 6
    12 years ago
    What are you saying is different? They are different shares all together TIR would not make this happen - if a folder is missing it is either excluded or the policy selections are not correct
  • snawaz3's avatar
    snawaz3
    Level 6
    12 years ago
    sorry for the wrong screen shot. attached is a new screen shot. on 28 mar i again selected TIR with move detection and all the folders got backed up. I get this screen shot from going to FILE>SELECT FILES AND FOLDERS TO RESTORE>FROM NORMAL BACKUP in BAR.
  • Mark_Solutions's avatar
    Mark_Solutions
    Level 6
    12 years ago
    On 15th you have 9 jobs - for 27th / 28th you have 18 jobs - is this when you were trying different streams and so have twice as many jobs so only some folders in each backup in each stream? Was TIR the only thing that changed for these dates - it should not cause that difference on full backups
  • snawaz3's avatar
    snawaz3
    Level 6
    12 years ago
    on the 27 i did a full backup wIth TIR deselected. screen shot of FILE>SELECT FILES AND FOLDERS TO RESTORE>FROM TIR BACKUP in BAR.on 28 was backup with TIR selected. in the screen shot 27 does not show as i backed up with TIR deselected.
  • Mark_Solutions's avatar
    Mark_Solutions
    Level 6
    12 years ago
    AH! - I see what you mean I still think this may be down to the changes you were making with this policy whilst testing different streams and that is affecting the TIR results too. Can you be sure both sets are from the same selection lists? You were doing a lot of testings with multiple streams last week that could account for this
  • snawaz3's avatar
    snawaz3
    Level 6
    12 years ago
    ok. i know I have been doing a lot of things simultaneously which i reliaze now is a bad idea. I was just trying to reduce the backup time so that my backups of my file server does not take 7 to 10 days to complete. The total size is about 16 TBs. I am thinking of implementing Synthetic Backups. I under stand if a do a normal full backup and then one differential and one cummulative incremental with synthetic backup selected, that will give me a full synthetic backup. That will act as my base full backup for next week, and if I do 3 differntial backups on monday tuesday and wednesday and then do a cummulative incremental on thursday, then my full backup on friday should take less time as it would consolidate my cummulative incremental with the previous full synthetic backup offline.? Does that make sense? that is what I got out of the admin guide. Also any idea how long TIR takes? Would not doing a TIR shorten my backup time? or is that just wishful thinking as TIR does not take up any significant ammount of time?
  • Mark_Solutions's avatar
    Mark_Solutions
    Level 6
    12 years ago
    TIR will actually increase your backup time slightly as it has to "map" the system and transfer that TIR information before it starts doing the backup The time it takes depends on how many files it has to scan and "map" - so on a huge system it could take quite some time
  • snawaz3's avatar
    snawaz3
    Level 6
    12 years ago
    thanks for all the info. any comments on the synthetic backup i am thinking about. will the way i propose doing it work? is my understanding correct?