I am looking at implementing synthetic backups to reduce backup time/impact to the client. I am totally new to synthetic backups.
Background:
Netbackup 6.5.6
Disk based storage unit (BasicDisk)
Media Manager storage unit with LTO4 tape drives.
We have contractual obligation to store full backups on tape at offsite location.
The data is Filenet data, in 32GB MSAR files so dedup would not help us for this particular app.
My plan:
disk based backups, initial full backup and daily incrementals.
on a weekly basis, run a synthetic full to create the offsite copy.
My questions:
How long do I set the retention for my initial full and daily incrementals?
Should I be doing incrementals, or do I need to use cumulative incrementals?
Do I ever need to rerun the regular full backup?
