HP XP Continuous Access Software - Manual (Page 84)

84 HP StorageWorks Disk Array XP RAID Manager: User’s Guide
LUN visibility from one host configuration
The following figure shows a one host protection mode configuration
sharing one array. Ora1 and Ora2 control operations are rejected because of
no visibility to Grp2 and Grp4 from HOST1. If HOST1 uses a command
device with protection set to OFF at creation time, then Ora1 and Ora2
volume pairs can be controlled.
CM* represents a command device with protection ON.
Protection is implemented completely within RM. If RM uses a command
device with protection enabled, RM will check permissions on all paired
volumes with which it deals.
Grp1
Grp2
Horcm0.conf on
HOST1
volumes for
Grp1
volumes for
Grp3
Horcm0.conf on
HOST2
volumes for
Grp2
Visibility to Grp2,Grp4
Visibility to Grp1,Grp3
Grp3
Ora1
Ora2
CM*
Grp4
Horcm1.conf on
HOST1
volumes for Grp2
volumes for Grp4
Horcm1.conf on
HOST2
volumes for
Grp4
Ora3
XP