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Table Of Contents
SRM License Keys and vCenter Server Instances in Linked Mode
If your vCenter Server instances are connected with vCenter Server instances in linked mode, you install the
same SRM license on both vCenter Server instances.
SRM License Keys and Protected and Recovery Sites
SRM requires a license key that specifies the number of virtual machines that you can protect at a site.
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Install SRM license keys at one site to enable recovery.
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Install the same SRM license keys at both sites to enable bidirectional operation, including reprotect.
SRM checks for a valid license whenever you add a virtual machine to or remove a virtual machine from a
protection group. If licenses are not in compliance, vSphere triggers a licensing alarm. Configure alerts for
triggered licensing events so that licensing administrators receive a notification by email.
Example: SRM Licenses Required for Recovery and Reprotect
You have a site that contains 25 virtual machines for SRM to protect.
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For failover, you require a license for 25 virtual machines, that you install on the protected site to allow
one-way protection from the protected site to the recovery site.
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For reprotect, you require a license for 25 virtual machines, that you install on the protected and the
recovery site to allow bidirectional protection between both sites.
SRM Network Ports
SRM Server instances use several network ports to communicate with each other, with client plug-ins, and
with vCenter Server. If any of these ports are in use by other applications or are blocked on your network,
you must reconfigure SRM to use different ports.
SRM uses default network ports for intrasite communication between hosts at a single site and intersite
communication between hosts at the protected and recovery sites. You can change these defaults when you
install SRM. Beyond these standard ports, you must also meet network requirements of your particular
array-based replication provider.
You can change the network ports from the defaults when you first install SRM. You cannot change the
network ports after you have installed SRM.
For a list of all the ports that must be open for SRM and vSphere Replication, see
http://kb.vmware.com/kb/1009562.
For the list of default ports that all VMware products use, see http://kb.vmware.com/kb/1012382.
Operational Limits of SRM
Each SRM server can support a certain number of virtual machines, protection groups, datastore groups,
vSphere Replication management server instances per host, and vSphere Replication servers per
vSphere Replication appliance.
For details about the operational limits of SRM and vSphere Replication, see
http://kb.vmware.com/kb/2034768.
Site Recovery Manager Installation and Configuration
22 VMware, Inc.