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crocs's avatar
crocs
Level 4
13 years ago
Solved

SBE12 - Infinite - Allow append

Hi!
I could use some advice.

I backup a phisical machine every week a Sunday.
This full backup is associate a media sets name: VCENTER - FULL.

One full backup is 35gb and the tape is LTO4 - 800gb.
I want to maintain this backup for 2 weeks, then i set overwrite protection period 2 weeks.

My problem is Append period (now set 6 days ), the full backup is very little and setting a appen period 6 days, there is a waste of space!
Expired six day , SBE take another tape ! but wrote very little.
This is a situation:

 

In this case , i can set Append Period: INFINITE - ALLOW APPEND ?
is the best thing to do? to avoid waste of tape!?

Thanks!

2012
Backup and Recovery
Backup Exec
Certification
  • Kiran_Bandi's avatar
    Kiran_Bandi
    13 years ago

     then when the tape is full, certainly the sbe take another tape

    Yes, definately. And the tape will be kept away from backup operation for 6 days from the day it became FULL (As you configured 6 days OPP). 

    Set Infinite- allow append ?

    Yes, you can set it to infinite append. I do not see/didn't faced any problems with that setting while using tapes.

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  • Backup_Exec1's avatar
    Backup_Exec1
    Level 6
    13 years ago
    Hi In this case , i can set Append Period: INFINITE - ALLOW APPEND ? Ans: End of last append is the time when overwrite protection is applied on tape,so if you set infinite append that means after the tspe is overwritten first time ,it will keep on appending until tape is completely filled. So yes you can use infinite allow append to use tape to it full capacity. Thanks
  • pkh's avatar
    pkh
    Moderator
    13 years ago

    Since the size of your backups are so small, have you considered using disk, instead of tape.  The advantage of using disk is that you do not need to stage the backup to disk during a GRT restore.  This makes a GRT restore from disk a lot faster than from tape.

  • crocs's avatar
    crocs
    Level 4
    13 years ago
    thanks for the advice, but unfortunately I have the available storage.

     

  • crocs's avatar
    crocs
    Level 4
    13 years ago

    Ok thanks!

    When the tape is full , the SBE restarts from the beginning ( same tape ) ? overwriting data expired ( overwrite protection period - expired ) ?.

  • Backup_Exec1's avatar
    Backup_Exec1
    Level 6
    13 years ago

    Hi

     

    Backup exec would have it own way of managing the tapes. Yes once tape is overwritable it will start writing the tape from first.

     

    Thanks

  • Kiran_Bandi's avatar
    Kiran_Bandi
    Level 6
    13 years ago

    overwriting data expired ( overwrite protection period - expired ) ?.

    A tape is expired means all the backup images on that media are expired. Data on the tape will be overwritten completely once the tape becomes overwritable. (You can think of it as erasing the tape completely and writing the new data. )

    That is why OPP of the media will be recalculated everytime data gets append to it.

  • crocs's avatar
    crocs
    Level 4
    13 years ago

    Thanks Kiran!

    humm ... then when the tape is full, certainly the sbe take another tape ( minimum two for media sets - VCENTER - FULL.).

    In my case , How would you do?

    Set Infinite- allow append ?

     

     

  • Kiran_Bandi's avatar
    Kiran_Bandi
    Level 6
    13 years ago

     then when the tape is full, certainly the sbe take another tape

    Yes, definately. And the tape will be kept away from backup operation for 6 days from the day it became FULL (As you configured 6 days OPP). 

    Set Infinite- allow append ?

    Yes, you can set it to infinite append. I do not see/didn't faced any problems with that setting while using tapes.