Add more hosts to the cluster.

Products

• VMware vSAN

Issue/Introduction

You can add ESXi hosts to a running vSAN cluster without disrupting any ongoing operations.

Environment

VMware vSAN

Resolution

Before you begin:

• Verify that the resources,  including drivers, firmware, and storage I/O controllers, are listed in the VMware Compatibility Guide at http://www.vmware.com/resources/compatibility/search.php.
• VMware recommends creating uniformly configured hosts in the vSAN cluster, so you have an even distribution of components and objects across devices in the cluster. However, there might be situations where the cluster becomes unevenly balanced, particularly during maintenance or if you overcommit the capacity of the vSAN datastore with excessive virtual machine deployments.

The new host's resources become associated with the cluster.

1. Navigate to the vSAN cluster.
2. Right-click the cluster and select  Add Hosts. The Add hosts wizard appears.

Option	Description
New hosts	Enter the host name or IP address. Enter the user name and password associated with the host.
Existing hosts	Select hosts that you previously added to vCenter Server.

1. Click Next.
2. View the summary information and click Next.
3. Review the settings and click Finish. The host  is added to the cluster. 

Next steps:

Verify that the vSAN Disk Balance health check is green. For more information about vSAN cluster configuration and fixing problems, see "vSAN Cluster Configuration Issues" in vSAN Monitoring and Troubleshooting.