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Mohamed_Anushat's avatar
10 years ago
Solved

Ovewrite protection period and Append Period Settings

I have checked the symantec backup exec with most of the options and gathered many information to make a backup strategy.  i plan to use the Partition insted of Media.

Lets say i have 2 partition

Partition1   using Tape 1 and Tape 2

Partition2   using Tape 3,4,5,6 and Tape 7

I use partition 1 to take Differential backup daily,  i want to make sure the following things

1. Data can be append for 30 Days and backed up data will be protected for 60 Days,

2. After 30 Days Second Tape must be used to Append Data for another 30 Days

3. After 60 Days it should use the First tape back.

Kindly advise me the correct settings

here are the pictures of settings

settings.jpgJob.jpg

 

  • 1. OPP starts from the END of the last job to write to the tape. 2. When a tape is overwritten, all the backup sets on the tape is gone.
  • See this document http://www.symantec.com/docs/TECH5459
  • OK assuming you can get 30days differential on one tape, remember that the 60 day overwrite protection period period will start from the end of the last job to write to the tape.

     

    So Tape 1 is used for 30 days

    Tape 2 is then used for 30days

    Tape 1 will not be available for another 30 days so you will need tape 3

  • Hrm, so data sets on the tape mark the entire tape, that is good to know my data sets expire on a tape and are removed but I only have a single drive.

    Does it change with a library?

  • Nope libraries still need an overwrite (or erase/label) job to use a specific tape for the existing data on that tape to be removed.

     

     

  • So meaning to say if i have 2 tapes my settings should be  

    30 OPP and 30 AP,

    So tape 1 will be used for 30 days and opp start for next 30 Days for the first tape

    Tape 2 will be used for 30 days and opp start for next 30 Days for the second tape

    Then Tape 1 will be used again.

     

    i have some confusion on this topic

    1.  is OPP mark the Entire tape not to be available for the OPP Specific Duration based on the Last Backuped Job?

    2. Do tapes lost Entire Data, When the Tape is Overwrited by the first job after end of OPP Duration?

    Kindly Reply me 

    Thanks

  • 1. OPP starts from the END of the last job to write to the tape. 2. When a tape is overwritten, all the backup sets on the tape is gone.
  • Thanks, I appreciate it.

    I have one more question to ask you, but still testing and let you know once it complete.