Every virtual machine requires a swap file. By default, vCenter Server creates swap files in the same datastore as the other virtual machine files. To prevent Site Recovery Manager from replicating swap files, you can configure virtual machines to create them in an unreplicated datastore.

About this task

Under normal circumstances, you should keep the swap files in the same datastore as other virtual machine files. However, you might need to prevent replication of swap files to avoid excessive consumption of network bandwidth. Some storage vendors recommend that you do not replicate swap files. Only prevent replication of swap files if it is absolutely necessary.


If you are using an unreplicated datastore for swap files, you must create an unreplicated datastore for all protected hosts and clusters at both the protected and recovery sites. The unreplicated datastore must be visible to all hosts in a cluster, otherwise vMotion will not work.


  1. In the vSphere Web Client, select a host and select Manage > Settings.
  2. Click Edit.
  3. In the VM Options tab, click Advanced Settings.
  4. For the swap file location, select Datastore specified by host.

    The other options are the default location and the virtual machine directory.

  5. Click OK.
  6. Power off and power on all of the virtual machines on the host.

    Resetting the guest operating system is not sufficient. The change of swapfile location takes effect after you power off then power on the virtual machines.

  7. Browse the datastore that you selected for swapfiles and verify that VSWP files are present for the virtual machines.