Group: Forum Members
Hi Darren! To make more sense of what you're trying to do, you need to know that any DIFF image is a "child" of the FULL "parent." Any INC image is a child of the most recent DIFF or FULL image. Knowing this, when you delete a FULL image, all of its delendant children (DIFFs & INCs) have to disappear as well since their dependency is being deleted.
That stated, if you set your FULL up to a WEEKLY operation and pick the date/time you'd like it to start, day of the week to run and the EVERY = 1-week... you're in for a weekly FULL. Then set up a DIFF for a WEEKLY operation as well, select the day(s) you want it to run (the ones other than the FULL), EVERY = 1-week and the date/time to start the schedule... you're in for daily DIFFs each week.
As far as RETENTION is concerned, all you need to manage is your FULLs as their children (the DIFFs) will disappear along with them (they have to). To do that all you have to do is CHECK the FULL retention option and set it for KEEP = 5-weeks. Insure that the other retention rules (DIFF & INC) are unCHECKed. To make sure you get your 5th week before week 1 is deleted, in the main Scheduling window (not the events themselves)... make sure the Run the purge before backup option is unCHECKed (it's located in the lower left area of the window).
In the above schedule, you're managing your FULLs at a 5-week interval and deleting your 1st FULL (as well as all its DIFFs... the whole 5-week set will be deleted) as soon as your 6th FULL has been generated.
Hope this helps!