2 weeks ago
No. Simply build a 2nd MM. Then configure VRRP between the primary MM and the secondary MM. After that is configured, you will need to configure VRRP database synchronization between the primary and the secondary (make sure that the primary is operating as the VRRP Master before you do this, otherwise you risk copying the blank configuration from the secondary MM and erasing the primary MM with it).
I hope this helps,
Sr. Trainer and Author of "Understanding ArubaOS: Version 8.x" book