Management Access to the High-Availability Pair
When configuring a high-availability (high availability) pair, you assign the pair a virtual IP (VIP) address, which enables you to manage the two appliances as if they were a single unit. After you enable high-availability mode, managing the secondary appliance through its IP address is mostly disabled, with most parameters grayed out. A warning message displays the reason on every page. Use the high availability VIP for all management tasks. You can, however, disable the secondary appliance’s high availability state from its management UI.