Change preferred interface for a NAS server

See Understanding PowerMax File for storage systems for an overview of PowerMax File.

This control is also available from the NAS Server All Details > Network > File Interface tab.

The preferred interface of NAS Server is an interface from which all the non-local outbound connections of this NAS Server are initiated. The preferred interfaces for IPv4 and IPv6 are independent from each other. The acting preferred interfaces, one for IPv4 and one for IPv6, are selected among active interfaces by the following rules, ordered by priority (highest first):

• Manually selected interfaces have priority over automatically selected ones.
• Production interfaces have priority over backup and DR testing ones.
• The interface with the default gateway has priority over one not having one.
• From the otherwise equal priority interfaces, one with the most routes has the priority.
• From the otherwise equal priority interfaces, one with the minimal value of IP address has the priority