6.7

To synchronize ESXi clocks with an NTP server, you can use the VMware Host Client. For information
about editing the time configuration of an ESXi host, see vSphere Single Host Management.
Using a User Account for Running vCenter Server
You can use the Microsoft Windows built-in system account or a user account to run vCenter Server. With
a user account, you can enable Windows authentication for SQL Server, and it provides more security.
The user account must be an administrator on the local machine. In the installation wizard, you specify
the account name as DomainName\Username. You must configure the SQL Server database to allow the
domain account access to SQL Server.
The Microsoft Windows built-in system account has more permissions and rights on the server than the
vCenter Server system needs, which can contribute to security problems.
Important If the vCenter Server service is running under the Microsoft Windows built-in system account,
when using Microsoft SQL Server, vCenter Server supports only DSNs with SQL Server authentication.
For SQL Server DSNs configured with Windows authentication, use the same user account for the
VMware VirtualCenter Management Webservices service and the DSN user.
If you do not plan to use Microsoft Windows authentication for SQL Server or you are using an Oracle
database, you might still want to set up a local user account for the vCenter Server system. The only
requirement is that the user account is an administrator on the local machine and the account must be
granted the Log on as a service privilege.
Note Starting with vSphere 6.5, the vCenter Server services are not standalone services under Windows
SCM, instead they run as child processes of the VMware Service Lifecycle Manager service.
Installing vCenter Server on IPv6 Machines
Starting with vSphere 6.5, vCenter Server supports mixed IPv4 and IPv6 environments.
You can connect vCenter Server with an IPv4 address to vCenter Server with an IPv6 address. When you
install vCenter Server with an IPv6 address, use the fully qualified domain name (FQDN) or host name of
the machine on which you install vCenter Server. When you install vCenter Server with an IPv4 address,
the best practice is to use the fully qualified domain name (FQDN) or host name of the machine on which
you install vCenter Server, because the IP address can change if assigned by DHCP.
Running the vCenter Server Installer from a Network Drive
You can run the vCenter Server installer from a network drive, but you cannot install the software on a
network drive.
In Windows, you can run the installers from the network drive and install the software on the local
machine.
vCenter Server Installation and Setup
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