6.1

Table Of Contents
Powering on Many Virtual Machines Simultaneously on the Recovery
Site Can Lead to Errors
When many virtual machines perform boot operations at the same time, you might see errors during array-
based and vSphere Replication recovery.
Problem
When powering on many virtual machines simultaneously on the recovery site, you might see these errors
in the recovery history reports:
n
The command 'echo "Starting IP customization on Windows ..." > > % VMware_GuestOp_OutputFile
%.
n
Cannot complete customization, possibly due to a scripting runtime error or invalid script
parameters.
n
An error occurred when uploading files to the guest VM.
n
Timed out waiting for VMware Tools after 600 seconds.
Cause
By default, Site Recovery Manager does not limit the number of power-on operations that can be performed
simultaneously. If you encounter errors while virtual machines power on on the recovery site, you can
modify the vmware-dr.xml file to set a limit on the number of virtual machines that power on
simultaneously.
If you encounter these errors, limit the number of power-on operations on the recovery site according to the
capacity of your environment for a standalone host or for a cluster.
Solution
1 On the recovery server, go to C:\Program Files\VMware\VMware vCenter Site Recovery
Manager\config.
2 Open the vmware-dr.xml file in a text editor.
3 Update the defaultMaxBootAndShutdownOpsPerCluster and defaultMaxBootAndShutdownOpsPerHost
values to limit the number of power-on operations at the recovery site.
The following example shows how to limit the number of power-on operations to a maximum of 32 per
cluster and 4 per standalone host.
<config>
<defaultMaxBootAndShutdownOpsPerCluster>32</defaultMaxBootAndShutdownOpsPerCluster>
<defaultMaxBootAndShutdownOpsPerHost>4</defaultMaxBootAndShutdownOpsPerHost>
</config>
4 Restart the Site Recovery Manager Server service.
LVM.enableResignature=1 Remains Set After a
Site Recovery Manager Test Recovery
Site Recovery Manager does not support ESXi environments in which the LVM.enableResignature flag is
set to 0.
Problem
During a test recovery or an actual recovery, Site Recovery Manager sets LVM.enableResignature to 1 if
the flag is not already set. Site Recovery Manager sets this flag to resignature snapshot volumes and mounts
them on ESXi hosts for recovery. After the operation finishes, the flag remains set to 1.
Chapter 15 Troubleshooting Site Recovery Manager
VMware, Inc. 171