Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access for P9000 and XP A.11.00

/dev/rdsk/c21t8d0 /dev/rdsk/c24t8d0
HORCM_LDEV
# dev_group dev_name Serial# CU:LDEV(LDEV#) MU#
dg12 dg12_d0 10048 02:05 h1
dg23 dg23_d0 10048 02:05 h3
HORCM _INST
#dev_group ip_address service
dg12 NodeA.dc1.net horcm0 # communicate with DC1 nodes
dg23 NodeC.dc3.net horcm0 # communicate with DC3 nodes
Sample Raid Manager Configuration on a DC3 NodeC (Tri-Link)
HORCM _MON
#ip_address service poll(10ms) timeout(10ms)
NodeC horcm0 1000 3000
HORCM_CMD
#dev_name dev_name dev_name
/dev/rdsk/c6t2d0 /dev/rdsk/c8t2d0
HORCM_LDEV
# dev_group dev_name Serial# CU:LDEV(LDEV#) MU#
dg13 dg13_d0 10050 03:06 h2
dg23 dg23_d0 10050 03:06 h3
HORCM _INST
#dev_group ip_address service
dg23 NodeB.dc2.net horcm0 # communicate with DC2 nodes
dg13 NodeA.dc1.net horcm0 # communicate with DC1 nodes
11. Restart the Raid Manager instance so that the new information in the configuration file is read:
# horcmshutdown.sh <instance-#>
# horcmstart.sh <instance-#>
12. Repeat steps 1 through 12 on each host that runs this particular application package.
If a host runs more than one application package, you must incorporate device group and host
information for each of these packages.
NOTE: The Raid Manager configuration file must be different for each host, especially for the
HORCM_MON and HORCM_INST fields.
Creating Device Group Pairs
After configuring the Raid Manager configuration files on all nodes in the primary and recovery
cluster, you must create Continuous Access device group pairs. An application configured for a
3DC DR Solution may contain either three or two device group pairs based on Tri-Link or Bi-Link
configuration respectively.
An application configured for a 3DC DR Solution with Tri-Link configuration contains three device
group pairs; One Continuous Access Sync or Journal device group pair between DC1 and DC2,
Continuous Access-Journal device group pair, and a Delta Resync device group pair.
An application configured for Three Data Center solution with Bi-Link configuration contains two
device group pair; Continuous Access Sync or Journal device group pair between DC1 and DC2
and Continuous Access-Journal device group pair to DC3. All the device group pair relations must
be established prior to the rest of the configurations and normal package operations.
Creating Device Group Pairs for Tri-Link configuration
For a 3DC Tri-Link configuration, a Delta Resync pair can be created either between DC2 and
DC3 or DC1 and DC3. The steps to create the device group pairs differ based on where the Delta
Resync pair needs to be configured. For configuring Delta Resync pair between DC2 and DC3,
Configuring an application 115