Configuring placeholder datastores
You must configure a placeholder datastore to hold a place in the vCenter inventory at the recovery site for the protected virtual machine (VM). The placeholder datastore does not need to be large as the placeholder VMs are small and use only a few hundred or fewer kilobytes.
Before you begin 
Steps 
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In the Manage tab, select Placeholder Datastores.
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Note: Placeholder datastores can be local or remote and should not be replicated.
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Parent topic: Configuring protected and recovery site resources