You can add hosts to clusters in your recovery SDDC to expand your recovery capacity.

Host types include:

  • I3. I3 hosts have 36 cores, 512 GiB RAM, and 10.37 TiB raw storage capacity per host. Supported for single to four host clusters
  • I3en. The I3en host type is optimized for data-intensive workloads. I3en hosts have 96 logical cores, 768 GiB RAM, and 45.84 TiB raw storage capacity per host. Single-host Recovery SDDCs cannot contain the I3en host type.
  • I4i. The I4i host type provides up to 128 logical cores, 1024 GiB of RAM, and 30 TiB raw storage capacity per host.
The number of hosts on a recovery SDDC cluster has the following restrictions:
  • If there is one existing host in the cluster, you can add exactly two hosts (no other option available).
  • You cannot revert back from a two or three host cluster down to a one host cluster.
  • If you want to scale up a two host deployment, you can expand the recovery SDDC by adding a cluster to it, rather than adding more hosts to the two host primary cluster.
  • A single host cluster supports I3 or I3en hosts only.
For more information on VMware Live Cyber Recovery limits, see https://configmax.vmware.com/home.
Note: Adding a host increases both the available storage capacity and costs.
Note: If your cluster has 3 or more hosts, and during operation your data expands beyond the capacity of the configured vSAN, VMware’s Elastic DRS automatically adds a host if the recovery SDDC free space drops below 25%. Hosts are never removed automatically, but can be removed in the VMware Live Cyber Recovery UI all the way down to three hosts. Keep in mind also that you cannot remove hosts from 2 host recovery SDDC.