HP XP Continuous Access Software - Manual (Page 82)

82 HP StorageWorks Disk Array XP RAID Manager: User’s Guide
MPE/iX Not supported (only SCSI connections). MPE/iX can
protect volumes only by using the protection mode of
RM.
OpenVMS
Not supported. If a command device is set to enable
protection mode, it is ignored by RM.
Command device configuration
You can use both protected and unprotected modes in a single array by
enabling or disabling the protection facility of each command device. As a
minimum configuration, it is possible to have two command devices, one
with protection enabled and the other disabled.
Protection mode is enabled for the host that uses a LUN security enabled
command device.
LUN visibility from two host configuration
The following figure shows a two host protection mode configuration
sharing one array. Operations directed at Ora2 are rejected because of no
visibility for Grp4 from HOST2.
CM* represents a command device with protection set to ON at creation
time.