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Step-by-Step: Downloading & Deploying the vSAN Witness Appliance If you are setting up a 2-Node vSAN Stretched Cluster

, the vSAN Witness Appliance is your essential "tie-breaker" for maintaining quorum during a failure. Since the transition to the Broadcom portal, finding the right download can be a bit of a scavenger hunt. Here is exactly how to get it and get it running. 1. Where to Download the Appliance As of early 2026, all VMware downloads have migrated to the Broadcom Support Portal . Follow these steps to find the file: : Sign in to the Broadcom Support Portal : On the left-hand sidebar, select "My Downloads" : Search for "VMware Cloud Foundation" "VMware vSAN" in the product selection. : Under the "Drivers & Tools" section, look for "VMware vSAN Witness Appliance" Version Check

: Ensure you download the version matching your ESXi/vSAN build (e.g., vSAN 8.0) and choose between (Original Storage Architecture) or (Express Storage Architecture) versions. 2. Sizing Your Witness

When you deploy the OVA, you’ll be asked to choose a configuration size. This depends on how many objects you plan to protect: : Supports up to 10 VMs (2 vCPU, 8 GB RAM, 40 GB storage). : Supports up to 500 VMs. download vsan witness appliance

: For environments with over 500 VMs (2 vCPU, 32 GB RAM, 1 TB+ storage). 3. Deployment Basics Once you have the

file, the deployment follows the standard vSphere OVF process:

: In the vSphere Client, right-click your Datacenter/Cluster and select "Deploy OVF Template" Network Setup : You must configure two network interfaces: Management Network : For vCenter communication. vSAN Network Common issues & tips

: For communication with the cluster nodes. These can be on the same VLAN for lab setups, but should be separated in production. Power On & Configure

: After deployment, power on the VM. Use the DCUI (F2) to set a static IP if you aren't using DHCP. Add to vCenter

: Add the appliance to your vCenter as a standalone ESXi host. Note that it comes with its own built-in license. 4. Final Hookup Version mismatch: always use the witness version recommended

To complete the setup, go to your vSAN cluster settings under Configure > vSAN > Fault Domains to select your new Witness Host as the tie-breaker. Need more help? Check out the official Broadcom TechDocs for deep-dive networking requirements. Are you setting this up for a production environment

VxRail: How to Deploy the VSAN Witness appliance | Dell Egypt

Common issues & tips

  • Version mismatch: always use the witness version recommended for your vSAN release.
  • Network/firewall blocks: ensure ports between data hosts and witness are open (TCP/UDP as per VMware docs).
  • DNS/NTP misconfiguration causes registration or heartbeat failures—verify both.
  • Resource sizing: undersized witness appliances may fail under load; follow VMware sizing guidance.
  • For cloud-hosted witnesses (e.g., VMware Cloud or public cloud), confirm supported architectures and networking.

Step 6: (Optional) Verify Checksums

On the same page, download the checksum file (.mf or .sha256).
Use sha256sum (Linux/Mac) or Get-FileHash (PowerShell) to validate the OVA.

Key Characteristics

  • No Storage Requirement: It consumes minimal CPU and memory (typically 2 vCPUs, 4 GB RAM).
  • No Data Replication: It witnesses the cluster state but never holds a copy of the VMDK files.
  • Deployment Location: It can be placed on a separate ESXi host, a different network segment, or even in a cloud environment.