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The vSAN Witness Appliance requires two distinct network interfaces configured upon deployment:
Once the OVA file is downloaded, deploy it using the standard vSphere workflow: Step 1: Launch the Deploy Wizard
steps (like setting up the vSAN VMkernel) after you finish the download? download vsan witness appliance
: Type "Witness" in the search bar. Look for the VMware vSAN Witness Appliance entry and expand it to download the OVA file. Step 2: Deploy the Appliance
Once you have downloaded the vSAN Witness Appliance OVA file, follow these steps to deploy it: The vSAN Witness Appliance requires two distinct network
Before deploying the OVA, ensure the following requirements are met:
In a standard vSAN cluster (three or more hosts), data replicas and witnesses are distributed among the hosts within a single site. However, (data spread across two geographical sites) and two-node clusters lack a third, independent site to break ties. For instance, if the network link between two sites fails, each site might believe it is the active partition, leading to "split-brain" scenarios where conflicting data writes corrupt the datastore. The Witness Appliance, placed in a third physical location (or a fault domain isolated from both data sites), provides the necessary "vote" to determine which site’s data remains valid. Step 2: Deploy the Appliance Once you have
Your Guide to Downloading and Deploying the VMware vSAN Witness Appliance
Go to the or Downloads tab and select VMware vSphere .
Launch the vSAN Stretched Cluster or 2-Node Cluster configuration wizard from vCenter, and select this newly added host as your designated Witness Host. 🔍 Best Practices for vSAN Witness Deployment
In the search or product selection area, select "VMware Cloud Foundation" (or search directly for "vSAN").