VMware VCENTER SERVER 4.0 - GETTING STARTED UPDATE 1 Installation Guide Page 25

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VMware, Inc. 25
Chapter 2 vCenter Server Heartbeat Implementation
Primary Server
Three NICs (1 x Public and 2 x Channel) are recommended for redundancy in the event one channel fails. A
minimum of two NICs (one for the Channel, and one for the Public) are required in this configuration.
Split-brain Avoidance should be configured.
Principal (Public) network connection configured with the following:
Static IP address
Correct network mask
Correct Gateway address
Correct preferred and secondary (if applicable) DNS server address
NetBIOS enabled
Channel Network connection(s) configured with the following:
Static IP address in a different subnet than the Principal (Public) network with a different IP address
than the Secondary server channel NIC
Correct network mask
No Gateway IP address
No DNS server address
NetBIOS enabled (disabled during the installation process)
Secondary Server
Networking components on the Secondary server must be configured as follows:
Same number of NICs as the Primary server
Principal (Public) network connection configured with a temporary IP address different from the
Principal (Public) IP address but within the same subnet
Channel network connection(s) configured with the following:
Static IP address in a different subnet than the Principal (Public) network with a different IP address
than the Primary server channel NIC
Correct network mask
No Gateway IP address
No DNS IP address
NetBIOS enabled (setup will disable this during the installation process
File and print sharing enabled
WAN
Deploying vCenter Server Heartbeat in a WAN environment requires additional considerations. Each server
within the vCenter Server Heartbeat pair requires its own separate Principal (Public) IP address and a VMware
Channel IP address in a separate dedicated subnet.
DNS Server Updated During Switchover/Failover
DNS servers must be updatable to allow operation of the DNSUpdate.exe If using Microsoft Windows 2008
R2, the security level must be configured to permit changes to Windows Server 2008 R2 DNS servers.
WAN Requirements
WAN deployments require the following:
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