I have created a protection group for file server and taking backup of a share on tape drive.
under protection method--> I chose I want short-term protection using : tape
retention range: 1 week
frequency of backup: daily
backup mode: full and incremental
so full backup on Saturday and other days incremental backup.
I have around 700 GB data size.
I have shortages of tape. from recovery option: I saw in this month on 12thOct, on Saturday it run full backup. It took one tape [say tape 1]
on the next 6 days it run incremental backup on another tape.[say tape 2]
again on Saturday for full backup it took tape 3 [tape 3]
again to run incremental backup it is asking for free tape. and back up failed.
in this way I am wasting space on tape. data size is 700 GB, tape size is around 3 TB.
I can see there is option in 'optimize usage' where I can mention under advanced. write period and expiry tolerance.
i believe I need to modify these settings. please suggest if i want daily incremental backup and full backup on Saturday with 1 week retention and reuse the same tape or second tape instead of waiting for more tapes