Data Storage Management

What are your preferred methods for storing inactive data and why?

What are your preferred methods for storing inactive data and why?

Second tier storage: Putting our DFSMS/HSM ML1 data on FATA-disk

We are mainframe users (IBM Z9 and Z10). All DASD is IBM DS8300 and we are looking at the implementation of a second tier. We would like to put our DFSMS/HSM ML1 data on FATA-disk. After some calculations we found out that a 150 TB second tier buffer would be big enough to store one year of ML1...