Protection facility specification, Protection facility specification 81 – HP XP Continuous Access Software User Manual
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HP StorageWorks Disk Array XP RAID Manager: User’s Guide
Protection facility specification
Only permitted volumes and volumes visible to the host can be listed in the
horcm.conf file. A volume must fulfill two requirements to be considered
“permitted” by the RM protection facility:
• It is host viewable (for example, with the HP supplied Inquiry tool).
• It is a volume listed in the horcm.conf file.
RM manages volume mirror descriptors (MU# for CA, BC0/BC1/BC2) as
a unit. The permitted volumes in the following table lie at the intersection
(the dark shaded areas) of volume device files, representing volumes that
the host is allowed to see (row), and volumes that are listed in the
horcm.conf file (column).
Guide to table terms:
L
The volume mirror descriptor is listed in the
horcm.conf file.
Not
The volume mirror descriptor is not listed in the
horcm.conf file.
Unknown
Volumes that the host cannot see, even though the
volumes were listed in the horcm.conf file.
P
Permitted
N
Not permitted
Volumes on
horcm.conf
Mirror descriptor defined in horcm.conf
CA
BC0
BC1
BC2
L
not
L
not
L
not
L
not
Unknown
N
N
N
N
N
N
N
N
/dev/rdsk/c0t0d0
P
N
P
N
P
N
P
N