Disk to Disk to Tape Configuration ?

Hello Everyone

I want to setup a primary disk pool , and a secondary tape pool . The disk pool will hold the data backup for 7 days. The Tape pool will hold the data for 30 days.

Normally i would only setup the primary disk pool to migrate to tape after 7 days. But customer require that the tape hold all the recent data of 30 days.


What is the best way to archive this requirements ?


Thanks and Best Regards