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

Building a Metropolitan Cluster Using MetroCluster/SRDF
Preparing a Cluster for MetroCluster/SRDF
Chapter 4 147
Building the Symmetrix CLI Database
The Symmetrix CLI (Command Line Interface) should be installed on all
nodes running packages that use data on the EMC Symmetrix disk
arrays. Create the SymCLI database on each system using the following
steps. For complete information, refer to the Symmetrix SymCLI
manual.
Issue the following command on each node after the hardware is
installed:
# symcfg discover
This builds the CLI database on the node.
You can display what is in the SymCLI database with the commands:
• symdg list
symld -g symdevgrpname list
• symgate list
If you have not configured the SymCLI database, you will see an error:
The Symmetrix configuration could not be loaded for a locally
attached Symmetrix
NOTE Make sure that you do not set the SYMCLI_SID and SYMCLI_DG
environment variables before running the symcfg command. These
environment variables limit the amount of information gathered when
the SymCLI database is created, and will not give you a complete
database.
Also, the SYMCLI_OFFLINE variable should not be set. This environment
variable disables the command line interface.
Determining Symmetrix Device Names on Each Node
To correctly specify the device file names when creating Symmetrix
device groups, you need to know how the HP-UX device files map to the
R1 and R2 Symmetrix devices. Use the following steps to gather the
necessary information.