Specifications

22 Optimizing IBM Netfinity Servers for SAP R/3 and Windows NT
PowerChute plus software in the Back-UPS mode on the servers which are
connected to this basic ports.
The computer interface port on the UPS is an advanced port with advanced
notification and management features. Connect the server to this interface port
where you plan to use the PowerChute
plus software with its intelligent monitoring
and control features such as UPS statistics, different voltage displays, battery
capacity display, remaining run-time display, status indicators, particular
configuration parameters and different diagnostic and self-test functions. This
server will be responsible for UPS management and is becoming the
master
server. But you have access to this service over the network.
The PowerChute
plus software is divided in a monitoring service and user
interface. You can manage and monitor the advanced functions from every
network-connected server or/and workstation where the PowerChute
plus user
interface software is installed. This station does
not need to be connected to an
UPS port and does
not have to run the UPS service. The advanced interface port
can also work as a basic monitoring port.
There is no difference whether you install an SAP R/3 application and database
server on a basic port or an advanced port. There are no performance or security
reasons that determine on which port you should install your SAP R/3 servers.
Every server you want to shut down when the power fails must be connected to a
UPS port.
For example you can connect a domain controller or a backup domain controller
to the advanced port and install the PowerChute
plus monitoring service and user
interface program there. The SAP R/3 server would be connected to the basic
ports and runs the monitoring service and can also run the graphical user
interface.
2.2.3.1 The Interface Expander
The normal UPS standard operation during a utility failure is to run on battery
until utility power is restored, or until the battery is exhausted. After a low battery
warning interval, the UPS goes into shutdown mode and stops supplying power to
the components.
The Interface Expander adds three operating modes that cause a shutdown of
the UPS by a user-definable mode. This is normally done to preserve battery
capacity after the successful shutdown of the protected servers.
Note: Keep in mind that these additional operating modes are only to shut down
your APC UPS and initiate a power cycle to restart your servers after utility power
is restored. The real server shutdown is done by the PowerChute
plus software.
The low battery warning interval is a low-battery signal sent to the
computer interface ports approximately two minutes before the
battery is exhausted. During this interval the UPS beeps
continuously. Two minutes is the default setting for your APC UPS.
You can adjust this setting to five or seven minutes. Please refer to
your APC UPS user manual.
Low Battery Warning Interval