Problem Regarding Backup on Disk as well as on Tape Drive

Dear Experts,

We have one Developmenet System and one QA System, and we want to take daily online database backup for both servers, now my situation is like below

(1) I have only one LTO Tape drive, which i have attached on QA Server, so in this case i can take daily backup of QA only.

(2) But Company wants policy like Alternate backup of both servers on LTO attached on QA Server, i think it is possible if we configure init<sid>.profile

(3) My problem is, on another side company wants alternate backup on Disk also, means

Day Development Server Quality Server

Monday Disk Tape

Tuesday Tape Disk

Wednesday Disk Tape

Thursday Tape Disk

Friday Disk Tape

Saturday Tape Disk

i think you can understand my problem.

So how can i set my init<sid>.sap profile file accordingly.

Waiting for your favorable response.

Thanks and Regards,

K R Singh