SANRAD manual Introduction to V-Switch Clusters

SANRAD V-Switches are both fully operational in a cluster. No V-Switch must sit in stand-by mode.

Introduction to V-Switch Clusters

Two V-Switches can be concurrently connected to the same FC storage devices to balance volume exposure thus creating a V-Switch cluster. In a cluster, each V-Switch interacts in an active-active, peer-to-peer fashion with the other V-Switch, or neighbor, in the cluster. No one V-Switch must be configured specially to act as the master V-Switch in the cluster providing higher flexibility in building a cluster.

All virtual volumes are accessible to each V-Switch and the exposing V- Switch is defined per volume.

In Figure 32, page 73, two V-Switches are connected to one FC JBOD. From the four physical disks, two virtual volumes have been created, both equally accessible to both V-Switches.

Both V-Switches are also connected to two hosts via the IP SAN. The volume exposure of the two virtual volumes is balanced equally between the two V-Switches. Volume 1 is exposed via V-Switch 1 to Host 1, represented by the orange dashed line. Volume 2 is exposed via V-Switch 2 to Host 2, represented by the purple dotted line.

The volume exposure is balanced equally between the two V-Switches with one volume exposed on each V-Switch for best resource utilization.

72 SANRAD V-Switch User Manual