Access Control FeatureThe access control feature allows you to manage access to the disk array unit.It consists in: Establishing the port or host that can access each logical disk. Running the logical disk masking feature on a port-by-port or host-by-host basisto protect data and ensure security.About Access ControlThe access control feature determines the logical disks accessible from the controller orhost and masks these disks. To use access control, the cross call feature must beenabled.Dedicated software (NEC Storage AccessControl for S1300), which must be purchasedseparately, is necessary for using the access control feature. For more information onusing NEC Storage AccessControl, refer to the Quick Reference Guide.Before the access control feature can be used on this system, the license key providedwith the software must be entered from the management software in order to release thelicense lock. You can release the license lock and make settings by yourself or contactyour local service representative.Modes Supported by Access ControlThe access control feature supports the following two modes. Port mode WWN modeDo not use the two modes in the same unit. Considering the systemconfiguration/design and the complexity of operation, the use of only Port Mode orWWN Mode in each disk array unit is strongly recommended. Two modes cannot beco-existent in one controller.1-26 System Overview