13012. Access ControlAccess Control sets an accessible logical disk for each host (HBA) or each port. The useof the access control feature enables the division of logical disks into logical disk groups.The division extends the flexibility of the system configuration. The feature also ensuresdata protection and security protection by limiting access to each host (HBA) or each port.As a rule, do not use the two modes below in the same disk array unit. In consideration ofthe system configuration/design and the complexity of operation, the use of only PortMode or WWN Mode in each disk array unit is strongly recommended.Dedicated software (NEC Storage AccessControl), which is to be purchased separately, isnecessary for using the access control feature. For details on the usage, refer to theinstruction manual provided with the software.Before the access control feature can be used on this disk array unit, the license keyprovided with the software must be entered from "NEC Storage Manager" in order torelease the license lock.You can release the license lock and make settings by yourself.NEC maintenance service representative provides the installation service (additionallycharged) for releasing the license lock and making settings. Contact your maintenanceservice representative if necessary.Note: Set the CROSS CALL feature to ON when you use the access control feature.12.1 Port ModeAccessible logical disks are set in ports in the port mode.The access control in the port mode has the following features.• Conversion between logical disk number for management in unit and that on hostinterface• Masking by setting logical disks accessible from port• Addition/deletion of logical disks accessible from port• Registration of host permitting accesses12.2 WWn ModeAccessible logical disks in the system are set for each host (HBA) in the WWn mode.The access control in the WWn mode has the following features.• Conversion between logical disk number for management in unit and that on hostinterface• Masking by setting logical disks accessible from host (HBA)• Addition/deletion of logical disks accessible from host (HBA)