How to setting retention on Disk Staging?

[Apitha]

I set Duplicate backup from Disk to Tape by use Disk Staging.

How can I set tape retention?

Or it use same retention on Disk?

[Nicolai]

The retention is the same as defined in the policy when using Disk Staging (Basic Disk). If you used Storage Lifecycle Policy's, you wold be able to define different retentions.

[Marianne]

This TechNote is for NBU 5.x, but is still valid and explains the basics:
http://seer.entsupport.symantec.com/docs/270101.htm