Adaptec 1130U2 - Storage Controller RAID)- U2W SCSI 80 MBps Specifications download pdf (Page 135)

Linked Mode Prerequisites for vCenter Server

Prepare the vCenter Server system for joining a Linked Mode group.

Before joining a vCenter Server to a Linked Mode group, review “Linked Mode Considerations for vCenter

Server,” on page 134.

All the requirements for standalone vCenter Server systems apply to Linked Mode systems.

The following requirements apply to each vCenter Server system that is a member of a Linked Mode group:

vCenter Server does not support Linked Mode groups that contain both version 5.x and pre-5.0 versions

of vCenter Server. Similarly, vCenter Server does not support Linked Mode groups that contain

different 5.x versions of vCenter Server or different versions of vCenter Single Sign-On. After all 5.x

vCenter Server and vCenter Single Sign-On instances in a Linked Mode group are upgraded to the

same 5.x version, you can rejoin them.

Make sure that all vCenter Servers in a Linked Mode group are registered to the same vCenter Single

Sign-On server.

To join a vCenter Server to another vCenter Server in Linked Mode, the currently logged-in user who is

performing the join operation must have access to the vCenter Server database of each vCenter Server.

When you join a vCenter Server instance to a Linked Mode group, the installer must be run by a

domain user who is an administrator on both the machine where vCenter Server is installed and the

target machine of the Linked Mode group.

When you join a vCenter Server instance to a Linked Mode group, if User Account Control (UAC) is

enabled on the machine, the join operation requires elevated privileges through the Run as

administrator option. This is true even if the logged-in user is a domain administrator user.

To join a Linked Mode group the vCenter Server must be in evaluation mode or licensed as a Standard

edition. vCenter Server Foundation and vCenter Server Essentials editions do not support Linked

Mode.

DNS must be operational for Linked Mode replication to work.

The vCenter Server instances in a Linked Mode group can be in different domains if the domains have a

two-way trust relationship. Each domain must trust the other domains on which vCenter Server

instances are installed.

All vCenter Server instances must have network time synchronization. The vCenter Server installer

validates that the machine clocks are not more than five minutes apart. See “Synchronizing Clocks on

the vSphere Network,” on page 53.

Join a Linked Mode Group After a vCenter Server Upgrade

After you upgrade to vCenter Server 5.5, you can join the system to a Linked Mode group. A Linked Mode

group allows you to log in to any single instance of vCenter Server in the group and view and manage the

inventories of all the vCenter Server systems in the group.

Prerequisites

See “Linked Mode Prerequisites for vCenter Server,” on page 135.

NOTE vCenter Server does not support Linked Mode groups that contain both version 5.x and pre-5.0

versions of vCenter Server. Similarly, vCenter Server does not support Linked Mode groups that contain

different 5.x versions of vCenter Server or different versions of vCenter Single Sign-On. After all 5.x vCenter

Server and vCenter Single Sign-On instances in a Linked Mode group are upgraded to the same 5.x version,

you can rejoin them.

Chapter 5 After You Upgrade vCenter Server

VMware, Inc. 135

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