You can use access control to restrict access from hosts and Lenovo Storage V7000clustered systems. You do not need to use access control to allow a Lenovo Storage V7000 system to use all of the defined logical units on the system.
Table 1 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. Lenovo Storage V7000 visibility (through switch zoning, physical cabling, and so on) must allow the Lenovo Storage V7000 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 Lenovo Storage V7000 connection. |
| WWN Mode | Allows access to logical units using the WWPN of each of the ports of an accessing host device. All WWPNs of all the Lenovo Storage V7000 nodes in the same system must be added to the list of linked paths in the storage system configuration. This becomes the list of host (Lenovo Storage V7000) 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. |