Extend the expiry date of a VM image

Hi All,

We  backup our VMware VMs  to the DataDomain with the policy storage for 5 weeks. Then there is a request to extend it to 3 montsh.  What is the best way to do it?

1. Can we just use the bpexpdate command? Is it possible on the disk like DataDomain?
2. Tape out? By duplicating the image usig Vault to the tape with expired date 3 months? (Is it true also if we duplicate to the tape then we lost the capabilities to do GRT restore?)
3. Is there any better option?

We are using NetBackup v. 7.6.0.2

Thank you.

Iwan Tamimi