Thanks for your input.
Yes i have checked and it appears that despite the retention settings that were originally configured (5 weeks) the OPP is infact set to infinite on -everything-.
So logically I am assuming that this would need to be set to match the corresponding desired retention period - as how I read this is that the OPP superseeds the retention period. Problem is, I can see the OPP for each media set but cannot see anywhere to change it.
The closest I have found is configuration and settings -> backup exec settings -> storage -> media protection overwrite level. This has been set to partial without prompt but im guessing this is the wrong place as no option explicity gives me an option to set OPP to X amount of time.
Before I lose my chain of thought due to distractions in the office, I also have a query regarding the full backup. Ultimately for me is to have a full backup run every friday while having a differential for mon,tues,wed,thurs. I have set the daily retention to 7 days and the weekly to 4 (so that by the time the 7th day is up and monday gets overwritten it will be present in the full backup - to make the daily media replaceable /rinse and repeat).
Now I set this up and it ran full backups for 3x servers and already my new disk is 75% full. What I would like to know is will the next week full backup be standalone or just an increment to the previous? I am probably not wording this correctly so let me try to expand:
Week 1 - Full backup x3 = 750GB total
Week 2 - Full backup x3 = 750GB(previous) + 750GB(new) = 1500GB total
Week 3 - Full backup x3 = 750GB(week1) + 750GB(week2) + 750GB(week3) = 2250GB total
Or
Will the difference (perhaps 50 GB of new data since last week over the course of the daily differential backups) be merged to the 1st week making week 2 = 800GB?
As it stands i stand to run out of disk space yet again already in week 2 depending on how the full backups work (I can get more storage but I just would like to know for ease of mind really).