Can I continue to use the “Grandfather-Father-Son” model for tape rotation?
Technically, yes, although it is not recommended. With Tivoli Storage Manager Express, file versions were retained in disk storage for 14 days after becoming inactive or being deleted from a client system. With Tivoli Storage Manager, you can change this amount of time. This allows you to keep data long enough to avoid having to create daily, weekly, or monthly backup sets. For example, if you change these retention settings to 30 days, you can restore point-in-time file versions for at least a month after data was initially backed up. Among other benefits, this approach should allow you to use fewer tapes. These retention options, and others, can be changed by modifying management class settings.
