Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Physical Data Replication for ContinentalClusters Using EMC SRDF
Preparing a Continental Cluster for Data Replication
Chapter 7 327
Preparing a Continental Cluster for Data
Replication
These procedures will prepare your MC/ServiceGuard clusters for use in
a ContinentalClusters configuration.
1. Ensure that the Symmetrix ICDAs are correctly cabled to each host
system in the cluster that will run packages whose data reside on the
Symmetrix.
NOTE Fibre Channel host adapters with the Fibre Channel/SCSI Mux,
native Fibre Channel host adapters (connected directly, through
hubs or through switches) to the Symmetrix or F/W SCSI host
adapters directly connected to the Symmetrix may be used.
2. Install the SymCLI software on each host system in both clusters
that has data residing on the Symmetrix. The default directory is
/usr/symcli/bin.
3. Create the SymCLI database on each system according to the
instructions in the SymCLI manual Run symcfg discover to create
the Symmetrix database on all nodes in both clusters.
# symcfg discover
NOTE Make sure that you do not set the SYM_SID and SYM_DG
environment variables before running the symcfg command.
4. Get a list of data for the Symmetrix devices available. Use the
syminq command (without any switches) to get a list:
# syminq
The list includes the following data for each Symmetrix logical
device:
• HP-UX special device filename
• device type (R1, R2, BCV or blank)