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3
Enter the upstream NTP servers to synchronize from.
a
Go to the registry setting
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders.
b
Set the NtpServer value to a list of at least three NTP servers.
For example, you might set the value to 0x1 1.pool.ntp.org,0x1 2.pool.ntp.org,0x1 3.pool.ntp.org.
4
Specify a 150-minute update interval.
a
Go to the registry setting
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\Nt
pClient,
b
Set the SpecialPollInterval value to
5
Restart the W32time service for the changes to take effect.
Download the vCenter Server Installer
Download the installer for vCenter Server, the vSphere Web Client, and associated vCenter components and
support tools.
Procedure
1
Download the vCenter Server installer from the VMware downloads page at
http://www.vmware.com/support/.
2
Confirm that the md5sum is correct.
See the VMware Web site topic Using MD5 Checksums at
http://www.vmware.com/download/md5.html.
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.
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.
Installing vCenter Server on IPv6 Machines
vCenter Server 5.1 supports connection between vCenter Server and vCenter Server components by IP
address only if the IP address is IPV4-compliant. To connect to vCenter Server system in an IPv6
environment you must use the fully qualified domain name (FQDN) or host name of the vCenter Server.
The best practice is to use the FQDN, which works in all cases, instead of the IP address, which can change if
assigned by DHCP.
VMware, Inc.
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Chapter 3 Before You Install vCenter Server
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