Specifications

Reference Guide
200 VMware, Inc.
Channel NIC (Network Interface Card)
A dedicated subnet used by the VMware Channel.
Cloned Servers
Two servers in a pair with the same configuration settings, names, applications, Security Identifiers (SIDs)
and IP addresses, following the installation of vCenter Server Heartbeat.
Cloning Process
The vCenter Server Heartbeat process whereby all installed applications, configuration settings, the
machine name, security identifier (SID), and IP address are copied to a second server.
Crossover Cable
A network cable that crosses transmit and receive lines.
D Data Replication
The transmission of protected data changes (files and registry) from the active to the passive server
through the VMware Channel.
Device Drivers
A program that controls a hardware device, linking it to the operating system.
Disaster Recovery (DR)
A term indicating how you maintain and recover data in light of a disaster such as a hurricane or fire.
vCenter Server Heartbeat achieves DR protection by placing the Secondary server at on offsite facility and
replicating the data through a WAN link.
DNS (Domain Name System) Server
Responsible for providing a centralized resource for clients to resolve NetBIOS names to IP addresses.
Domain
A logical group of client server based machines where the administration rights across the network are
maintained in a centralized resource called a domain controller.
Domain Controller (DC)
The server responsible for maintaining privileges to domain resources, sometimes called AD controller in
Windows 2000 and above domains.
F Failover
The process by which the passive server assumes the active role when it no longer detects that the active
server is alive as a result of a critical unexpected outage or server crash.
Full System Check (FSC)
The internal process programmatically started at the initial connection of a server pair or manually
triggered through the vCenter Server Heartbeat Console. The FSC verifies the files and registry keys, and
synchronizes the differences.
Fully Qualified Domain Name (FQDN)
Also known as an absolute domain name, a FQDN specifies its exact location in the tree hierarchy of the
Domain Name System (DNS). It specifies all domain levels, including the top-level domain, relative to the
root domain. Example: somehost.example.com., where the trailing dot indicates the root domain.
G Graceful (Clean) Shutdown
vCenter Server Heartbeat shuts down with no data loss after completing replication using the vCenter
Server Heartbeat Console.