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overwrite vs append

Not applicable

hello everybody

I have been created three mediaset as the follow:

a- 2 tapes for full backup related  with the first  jobs backup (im going to backup three virtual machine)

b-1 tape  for full backup releted with the second job (im going to backup four virtual machine )

c-1 tape for differencial backup related with two jobs above.


Im a little confuse how to configure the overwrite and append period. I want to store the two full backup for one month and after that to overwrite in the a &b tape library. also in the c tape library i have been  scheduled  backup every wensdays and thursdays on the week .

for the a and b tape i choose overwrite period for 4 weeks and for the c tape library overwrite period for 2 weeks .

i dont know if im in the right way . can you suggest anything if im wrong . i want after one month to restart the job that i scheduled because i havent more tape . it is neccesary fot me to save the latest the full back up and differncial backup for 2 jobs .




Level 4
Employee Accredited

I think for A and B you can put an OPP 4 weeks with append 12 hours and C for 2 weeks. 

Level 4
Employee Accredited

Please find below

An explanation of the "Overwrite Protection Period" and the "Append Period"

   VIP    Certified

You are repeating what the OP said he has set for media sets.