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Provides comprehensive information on Multi Instancing support. |
Using the Multi Instancing feature, the same Agent and MediaAgent software can be installed on a computer multiple times; the resultant multiple instances of a particular software component can operate simultaneously on the computer, independent from each other.
Each instance consists of the following:
Some of the circumstances where this feature will prove useful are illustrated by the following:
This illustrates just two possible uses; there will certainly be other cases where Multi Instancing will prove useful in an enterprise.
For these
iDataAgents, ensure that there
is no overlapping subclient content across instances before commencing data
protection operations:
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For more information about clusters, see Clustering Support.
This section details the steps for using Multi Instancing.
Instance001 is installed in C:\Program Files\DataProtection\.
Instance002 could be installed in C:\Program
Files\DataProtection_Instance_2\.
Instance002 cannot be installed in C:\Program
Files\DataProtection\Instance_2\.
Bull Calypso Communications Service(GxCVD) uses port 8400 by default. If you are using a non-default port, you need to open up the corresponding port in the firewall. You can specify a non-default port number for GxCVD in following ways:
The ports used by Bull Calypso services (by default, ports 8400, 8401, 8402, and 8403) must not be used for other configurations. Verify the service port assignments before using a port for firewall configurations. |
When upgrading a CommCell with multiple instances on the same computer, each instance is upgraded individually.
When uninstalling components which have been Multi Instanced, each instance of a given Agent or MediaAgent will be shown separately, either in the Add/Remove Control Panel (Windows) or in the Uninstall menu (Unix) so you can select the one you want to uninstall. Once uninstalled, the license will be released, and the CommCell Browser will indicate it is no longer installed, but the binaries are not actually removed until the last component using them is uninstalled. For more information about uninstalling software components, see Uninstalling Components.
When specifying a Network TCP Port Number other than 8400 for a MediaAgent's Communications Service (GxCVD), which may be necessary when more than one instance of the MediaAgent is installed on a computer, bear in mind that clients with an earlier release may not be able to communicate through that port. Thus, when specifying a non-default port number in such cases, you should ensure that all clients using the MediaAgent supports the Multi Instancing feature, and non-default Network TCP Port Numbers.
In a firewall configuration, if the client computer has multiple instances of the Agent software installed, then each instance must be configured with a distinct IP address and hostname, to be uniquely identified by the CommServe.