NetApp
7-mode/HA pair/V-Series : Active/active configuration : Understanding active/active configuration : What an active/active configuration is
What an active/active configuration is
An active/active configuration is two storage systems (nodes) whose controllers are connected to each other directly.
You can configure the active/active configuration so that each node in the pair shares access to a common set of storage, subnets, and tape drives, or each node can own its own distinct set of storage and subnets.
The nodes are connected to each other through an NVRAM adapter, or, in the case of systems with two controllers in a single chassis, through an internal interconnect. This allows one node to serve data that resides on the disks of its failed partner node. Each node continually monitors its partner, mirroring the data for each other’s nonvolatile memory (NVRAM or NVMEM).