HP StorageWorks EVA Cluster Extension Software Administrator Guide (T3667-96045, April 2010)

HP SMI-S configuration
When using HP SMI-S and EVA Cluster Extension, note the following requirements:
• To function properly, EVA Cluster Extension requires at least one instance of HP SMI-S EVA running
on a management server. You must, therefore, set up at least one management server with HP
SMI-S in each data center.
• In a Continuous Access EVA environment, both EVA storage systems should be actively managed
by the same management server during the EVA Cluster Extension resource configuration proced-
ures. After resources are configured, EVA Cluster Extension can complete failover with a manage-
ment server that is passively/actively managing the array.
• If EVA Cluster Extension cannot connect to the first management server in the list, it can switch to
any of the configured HP SMI-S EVA instances on the alternate management servers. To interface
with the local array, EVA Cluster Extension will try all local management servers before resorting
to the remote management servers. To interface with the remote array, EVA Cluster Extension will
also try the local management servers first, unless the intersite links are down. When the intersite
links are down, EVA Cluster Extension will immediately try to use the remote management servers
to interface with the remote array.
Configuration file (clxsmiscfg) for Linux
EVA Cluster Extension for Linux uses the binary configuration file clxsmiscfg on each cluster node.
This file is used to store configuration and access information for each configured management server.
The information contained in clxsmiscfg cannot be edited with a standard text editor. However,
management server entries can be added, modified, and deleted using the clxpmu utility, which is
included with the standard installation of EVA Cluster Extension. See “clxpmu” on page 96 for more
information.
After the file clxsmiscfg has been configured locally on a cluster node, it must be copied to each
node in the cluster. clxsmiscfg is located in the EVA Cluster Extension bin directory: /opt/
hpclxeva/bin.
Configuration tool (clxevaconfig.exe) for Windows
EVA Cluster Extension for Windows uses the configuration tool (clxevaconfig.exe) to store
configuration and access information for each configured management server. This tool stores
information in the clxevacfg file. However, because the clxevacfg file cannot be edited with a
standard text editor, management server entries can only be added, modified, and deleted using the
configuration tool that is included with the standard installation of EVA Cluster Extension. For more
information, see “Configuring EVA Cluster Extension” on page 25.
SSL protocol
You can configure EVA Cluster Extension to use the SSL protocol to communicate with the HP SMI-S
server. The SSL setting depends on whether or not SSL has been enabled on the HP SMI-S server side.
Some HP products do not support SSL communication with the HP SMI-S server. Make sure that all of
the products you use with the EVA storage system that rely on the HP SMI-S server also support SSL.
If you use one product that uses the HP SMI-S server and does not support SSL communication, you
must disable SSL on the HP SMI-S server side and change all clients (for example, EVA Cluster Extension)
to disable SSL communication.
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