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Table Of Contents
Table 2-2. Client Clock Tolerance
Deployment Scenario Clock Tolerance Connection Notes
Linking one vCenter Server with
another vCenter Server
When deploying the second vCenter
Server, the clock tolerance for the
client and the first vCenter Server
must not exceed 10 minutes.
Installing a vCenter Server appliance
using a container vCenter Server with
a *._on_vc.json template.
The maximum clock tolerance
between the client and the container
vCenter Server is 8 hours 20 minutes.
Prerequisites for Deploying the vCenter Server Appliance
To ensure a successful deployment of the vCenter Server appliance, you must perform some
required tasks and pre-checks before running the installer.
General Prerequisites
n Download and Mount the vCenter Server Installer.
Target System Prerequisites
n Verify that your system meets the minimum software and hardware requirements. See System
Requirements for the vCenter Server Appliance.
n If you want to deploy the appliance on an ESXi host, verify that the ESXi host is not in
lockdown or maintenance mode and not part of a fully automated DRS cluster.
n If you want to deploy the appliance on a DRS cluster of the inventory of a vCenter Server
instance, verify that the cluster contains at least one ESXi host that is not in lockdown or
maintenance mode.
n If you plan to use NTP servers for time synchronization, verify that the NTP servers are running
and that the time between the NTP servers and the target server on which you want to deploy
the appliance is synchronized.
n If you want to deploy the appliance on a vSAN ESA cluster with vSAN ESA encryption,
you must enable vSAN ESA encryption before installing vCenter Server. vSAN Express
Storage Architecture is a next-generation architecture designed to get the most out of high-
performance storage devices, resulting in greater performance and efficiency. You can enable
vSAN ESA encryption through vSAN SDK or vSAN API.
vCenter Enhanced Linked Mode Prerequisites
When deploying a new vCenter Server as part of an Enhanced Linked Mode deployment, create
an image-based backup of the existing vCenter Server nodes in your environment. You can use
the backup as a precaution in case there is a failure during the deployment process.
vCenter Server Installation and Setup
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