2.5

Table 3-1. Maximum Number of Database Connections (Continued)
Component Database Maximum Connections
vShield Manager data collector vCenter Chargeback Manager
database
10
Although a single connection is made,
the connection pool requires 10
connections
vCenter Chargeback Manager data
collector
vCenter Server database 5
If you have a vCenter Chargeback Manager cluster and also multiple instances of the vCenter Chargeback
Manager data collector, then you must configure the database connection numbers appropriately.
Other System Prerequisites
Apart from the networking and database management related prerequisites, you must perform few other pre-
installation tasks to ensure that vCenter Chargeback Manager is successfully installed and upgraded.
You must perform the following pre-install tasks:
n
Ensure that system time of all the servers and databases are in sync.
You must ensure that the system time of the machines on which you install vCenter Chargeback Manager
and vCenter Chargeback Manager database are in sync. If you plan to install one or more data collectors
on different machines, then the system time of these machines must be in sync with that of the machines
on which vCenter Chargeback Manager and vCenter Chargeback Manager database are installed.
Also, the system time of the vCenter Servers and the vCenter Server databases that you configure in
vCenter Chargeback Manager must be in sync with the that of the machine on which vCenter Chargeback
Manager is installed. In short, the system time of the machines on which vCenter Chargeback Manager
and the applications and databases that it communicates with are installed must be in sync.
n
Ensure that MSI Installation is enabled.
Before you start the installation, you must ensure that MSI installation is enabled on the machine. If not,
you must manually install Microsoft Visual C++ 2005 Redistributable Package (x86) before running the
vCenter Chargeback Manager installer.
n
Ensure that port exceptions are configured on the Windows firewall.
If the Windows Firewall is enabled, you must set the port exceptions for the HTTP, load balancer, and
HTTPS ports on the Windows Firewall. If these exceptions are not set, the application will be not be usable.
n
Ensure that the Windows user has the Log on as a service permission.
If you want to use the Windows authentication option for the vCenter Chargeback Manager database, you
must ensure that the Windows user has the Log on as a service permission. If this permission is not set
on the user, the installation will fail. Also, the installer must be run in the context of this Windows user.
Pre-installation Checklist
The pre-installation checklist helps you ensure that you have all the required information and have performed
the necessary pre-install tasks.
Table 3-2 lists the pre-install requirements.
vCenter Chargeback Manager Installation and Upgrade Guide
18 VMware, Inc.