Home > Storage > PowerStore > Virtualization and Cloud > Dell PowerStore: VMware Site Recovery Manager Best Practices > Modifying SRM settings for larger environments
VMware Site Recovery Manager ships with a default configuration that is tuned for a large cross-section of environments. However, each environment is unique in terms of architecture, infrastructure, size, and recovery time objective (RTO). Larger or more-complex SRM environments may require tuning adjustments in SRM (listed in the following bullet points) for SRM workflows to carry out their assigned tasks properly. For more information about making adjustments to accommodate such environments, see the SRM documentation section Modify Settings to Run Large Site Recovery manager Environments.
This option specifies the timeout allowed (in seconds) for running SRA commands in array-based-replication-related workflows. Increasing this value is typically required for larger environments. Recovery plans with many datastores to manage may fail if the storage-related commands take longer than five minutes to complete. For larger environments, increase this value (for example, to 3600 or higher) in the advanced SRM settings.
This option specifies the maximum number of concurrent SRA operations allowed.
This option specifies the number of additional host rescans during test, planned-migration, and recovery workflows. This feature was not available in SRM 5.0 and was reintroduced in SRM 5.0.1. Increase this value (for example, to 2 or higher) in the advanced SRM settings.
This option specifies the timeout allowed (in seconds) for host rescans during test, planned migration, and recovery workflows. Recovery plans with many datastores or hosts will fail if the host rescans take longer than five minutes to complete. Increase this value (for example, to 600 or higher) in the advanced SRM settings.
This option specifies the maximum number of concurrent power-on operations performed by SRM at the cluster object level. To enable the option globally, specify a numerical value (such as 32) by modifying the vmware-dr.xml file. You can add this option anywhere in the <config> section, and restart the Site Recovery Manager Server service after making a change.
<config>
<defaultMaxBootAndShutdownOpsPerCluster>32
</defaultMaxBootAndShutdownOpsPerCluster>
</config>
You can configure this value per cluster by editing the srmMaxBootShutdownOps in vSphere DRS Advanced Options. This value overrides a value specified in the vmare-dr.xml file.
This option specifies the maximum number of concurrent power-on operations performed by SRM at the host object level. To enable this option, specify a numerical value (such as 4) by modifying the vmware-dr.xml file. You can add this option anywhere in the <config> section, and restart the Site Recovery Manager Server service after making a change.
<config>
<defaultMaxBootAndShutdownOpsPerHost>4
</defaultMaxBootAndShutdownOpsPerHost>
</config>
The vmware-dr.xml file is located in the config directory that resides in the SRM installation folder. The specific location varies depending on the operating system and SRM version. For example:
C:\Program Files\VMware\VMware vCenter Site Recovery Manager\config\vmware-dr.xml
/opt/vmware/srm/conf/vmware-dr.xml