Network, Usage, and Fault Domain designations must be completed before volumes can be mapped to servers.
This screen displays the list of controllers, slots, and ports present on the Compellent Storage Center. For each IO card and port to be used on each controller, you must specify a Network value of Front End or Back End, and a Usage value of Primary or Reserved. Servers connect to the front end; storage enclosures connect to the back end. Primary ports are used for data traffic; Reserved ports are used in the event of a failover. Set the Network and Usage parameters to Unknown to indicate a port is unused.
Fault Domains define how to associate Primary and Reserved Front End ports to one another. Use the Edit Fault Domains button to create, modify, and delete Fault Domains from the system. Assign the same Fault Domain to Primary and Reserved ports to designate where traffic will be moved in the event of a failover or revert. Ports with a Network value of Back End or Unknown should not have a Fault Domain value.
Use the controller diagram at the bottom of the screen to identify the IO card's slot number. The port numbers on the IO Cards are numbered from 1 (top) to 4 (bottom).
Initiator, Target, and Both columns display the number of remote ports with the respective roles attached to the local port. Initiators are typically servers on the Front End. Targets are typically storage enclosures (such as disks) on the Back End. Storage systems are typically Both.
NOTE: Primary and Reserved port settings are binding. You are unable to modify these values once they have been set. For more information about slots and ports, refer to the Compellent System Connections Manual.