You can use access control to restrict access from hosts and system. . You do not need to use access control to allowthe system to use all of the defined logical units on the system.
Access control methods that are available lists the access control methods that are available.
| Method | Description |
|---|---|
| Port Mode | Allows access to logical units that you want to define on a per storage-system port basis. System visibility (through switch zoning, physical cabling, and other factors) must allow the system to have the same access from all nodes and the accessible storage system ports have been assigned the same set of logical units with the same logical unit number. This method of access control is not recommended for system connections. |
| WWN Mode | Allows access to logical units by using the WWPN of each of the ports of an accessing host device. All WWPNs of all the system nodes in the same system must be added to the list of linked paths in the storage system configuration. This list becomes the list of host system ports for an LD Set or group of logical units. This method of access control allows sharing because different logical units can be accessed by other hosts. |