How to Migrate Existing Deduplication Folder to other Storage Device ?

Hello,

i need a HowTo or Step by Step Guide to migrate the Deduplication Folder from existing Storage Device to another Storage Device ?

* Backup Exec 2012 SP2 on Windows Server 2008 R2 SP1
* Deduplication Folder takes place on a FC-SAN LUN
* Migration Target Storage Device --> another Storage FC LUN on another FC-Storage 

Can anyone guide me for this ?
Thanks.

Regards