Configuration file and mirror descriptors – HP XP RAID Manager Software User Manual
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(6) HORCM_LDEVG
The HORCM_LDEVG parameter defines the device group information that the RAID Manager
instance reads. For details about device group, see
“LDEV group function” (page 66)
.
The following values are defined.
•
Copy group: specifies a name of copy group. This is equivalent to the dev_group of
HORCM_DEV and HORCM_LDEV parameters.
RAID Manager operates by using the information defined here.
•
ldev_group: Specifies a name of device group that the RAID Manager instance reads.
•
Serial#: Specifies a DKC serial number.
(7) HORCM_INSTP
The HORCM_INSTP parameter uses when specifying a path ID for the link of Continuous Access
Synchronous as well as HORCM_INST parameter.
HORCM_INSTP
dev_group ip_address service pathID
VG01 HSTA horcm 1
VG02 HSTA horcm 2
NOTE:
The path ID can be specified at Continuous Access Synchronous. It cannot be specified
at Cnt Ac-J. Because the path ID is used at the paircreate command and the pairresync
-swapp[s], it must be specified at the both site of P-VOL and S-VOL. If the path ID is not specified,
it is used as a CU free.
Configuration definition for cascading volume pairs
The RAID Manager software (HORCM) is capable of keeping track of up to seven pair associations
per LDEV (1 for Continuous Access Synchronous/Cnt Ac-J, 3 for Cnt Ac-J, 3 for Business
Copy/Snapshot, 1 for Snapshot). By this management, RAID Manager can be assigned to seven
groups per LU that describe seven mirror descriptors for a configuration definition file.
Figure 16 Mirror descriptors and group assignment
Configuration file and mirror descriptors
The group name and MU# described in the HORCM_DEV parameter of a configuration definition
file are assigned the corresponding mirror descriptors, as outlined in
. “Omission
of MU#” is handled as MU#0, and the specified group is registered to MU#0 on Business Copy
and Continuous Access Synchronous. Also, the MU# that is noted for HORCM_DEV in
reflects a random numbering sequence (for example, 2, 1, 0).
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RAID Manager software environment