6.1

Modify Settings to Run Large Site Recovery Manager Environments
If you use Site Recovery Manager to test or recover a large number of virtual machines, you might need to
modify the default Site Recovery Manager settings to achieve the best possible recovery times in your
environment or to avoid timeouts.
In large environments, Site Recovery Manager might simultaneously power on or power off large numbers
of virtual machines. Simultaneously powering on or powering off large numbers of virtual machines can
create a heavy load on the virtual infrastructure, which might lead to timeouts. You can modify certain
Site Recovery Manager settings to avoid timeouts, either by limiting the number of power on or power off
operations that Site Recovery Manager performs concurrently, or by increasing the timeout periods.
The limits that you set on power on or power off operations depend on how many concurrent power on or
power off operations your infrastructure can handle.
You modify certain options in the Advanced Settings menus in the vSphere Web Client or in the
Site Recovery Manager client plug-in. To modify other settings, you edit the vmware-dr.xml configuration
file on the Site Recovery Manager Server. Always modify settings by using the client menus when an option
exists. If you modify settings, you must make the same modifications on the Site Recovery Manager Server
and vCenter Server instances on both the protected and recovery sites.
For descriptions of the settings that you can change, see “Settings for Large Site Recovery Manager
Environments,” on page 148.
Procedure
1 In the vSphere Web Client, select a cluster.
2 On the Manage tab, select Settings > vSphere DRS.
3 Click Edit.
4 In Advanced Options, set the srmMaxBootShutdownOps setting.
Option Description
Option text box
Enter srmMaxBootShutdownOps.
Value text box
Enter the maximum number of boot and shutdown operations, for
example 32. If you set the value to 32, the next guest starts booting or
shutting down as soon as one of the first batch of 32 has finished, namely
VMs 1 to 32 all start together, then VM 33 starts once one of the first batch
has finished, VM 34 starts when the second one of the first batch has
finished, and so on.
5 Click OK to save your changes.
6 Log in to the Site Recovery Manager Server host.
7 Open the vmware-dr.xml file in a text editor.
You find the vmware-dr.xml file in the C:\Program Files\VMware\VMware vCenter Site Recovery
Manager\config folder.
8 Change the defaultMaxBootAndShutdownOpsPerCluster and defaultMaxBootAndShutdownOpsPerHost
settings in the vmware-dr.xml file:
<config>
...
<defaultMaxBootAndShutdownOpsPerCluster>24</defaultMaxBootAndShutdownOpsPerCluster>
<defaultMaxBootAndShutdownOpsPerHost>4</defaultMaxBootAndShutdownOpsPerHost>
...
</config>
Chapter 12 Advanced Site Recovery Manager Configuration
VMware, Inc. 147