vSphere Replication can replicate multiple virtual machines.

When you configure replication, you set a recovery point objective (RPO) to determine the period of time between replications. For example, an RPO of 1 hour seeks to ensure that a virtual machine loses no more than 1 hour of data during the recovery. For smaller RPOs, less data is lost in a recovery, but more network bandwidth is consumed keeping the replica up to date.

Every time that a virtual machine reaches its RPO target, vSphere Replication records approximately 3800 bytes of data in the vCenter Server events database. If you set a low RPO period, this can quickly create a large volume of data in the database. To avoid creating large volumes of data in the vCenter Server events database, limit the number of days that vCenter Server retains event data. See Configure Database Retention Policy in the vCenter Server and Host Management Guide. Alternatively, set a higher RPO value.

The available quiescing types are determined by the virtual machine's operating system. See http://kb.vmware.com/kb/2041909 for Microsoft Volume Shadow Copy Service (VSS) quiescing support for Windows virtual machines.

To replicate virtual machines using vSphere Replication, you must deploy the vSphere Replication appliance at the primary and secondary sites. You must power on the virtual machines to begin replication.

Before you replicate multiple machines, configure datastore mappings in the Site Recovery Manager user interface. You configure the mappings so that information is available to Site Recovery Manager regarding the target datastore destinations for replication.

1

On the vSphere Web Client Home page, click VMs and Templates.

2

Select a folder or datacenter in the left pane and click the Virtual Machines tab.

3

Select the virtual machines to replicate using the Ctrl or Shift keys.

4

Right-click the virtual machines and click vSphere Replication.

5

Use the RPO slider or enter a value to configure the maximum amount of data that can be lost in the case of a site failure.

The available RPO range is from 15 minutes to 24 hours.

6

Select a Guest OS Quiescing configuration, if applicable to the source virtual machine operating system.

7

(Optional) Choose whether to enable Initial copies of .vmdk files have been placed on the target datastore.

Select this option if you have physically copied VMDK files to the target site for use as replication seeds. Site Recovery Manager uses datastore mappings and source virtual machine information to find and use initial copies. Site Recovery Manager shows progress and status as it searches for initial copies. You can stop the search process or start it again.

8

Accept the automatic assignment of a vSphere Replication server or select a particular server on the target site.

9

Review the settings and click Finish to establish replication.

10

Select the vSphere Replication view in the Site Recovery Manager interface.

11

Select the remote vSphere Replication site and click the Virtual Machines tab.

If you have configured the datastore mappings for vSphere Replication, the virtual machines synchronize with the target site.

If you did not configure the datastore mappings for vSphere Replication before configuring replication, the virtual machines appear in red with the status Datastore mappings were not configured. Reconfigure vSphere Replication on the virtual machines manually.