Appendix A. Connecting A Ups To An Express5800/320Ma System; Overview Of Connecting A Ups To An Express5800/320Ma System - NEC Express5800/320Ma Software Installation And Configuration Manual

For information about connecting a qualified uninterruptible power supply (UPS) to an
Express5800/320Ma system, see the following:
•
"Overview of Connecting a UPS to an Express5800/320Ma System" on page A-1
•
"Connecting a UPS to the Express5800/320Ma System" on page A-2
•
"Configuring the UPS" on page A-3
•
"Installing PCNS on the Express5800/320Ma System" on page A-5
•
"Configuring the PCNS User Interface" on page A-6
•
"Verifying the PCNS Installation" on page A-7
•
"Protecting Against Data Loss after a Medium Power Loss" on page A-8
Overview of Connecting a UPS to an Express5800/320Ma
System
Each Express5800/320Ma system has two power cords that supply power from
independent sources. The system continues to run as long as one of the power cords
has power. Loss of power to both sides of the system can halt system operations
without allowing applications to save data.
When you use a qualified UPS with a system, the UPS provides notification of
impending power loss. This notification initiates a controlled system shutdown that
preserves application data.
The UPS continues to supply power to the system for a period of time after its input
power source is interrupted. Consequently, plugging one side of the system into the
UPS output, and plugging the other side of the system into the same power source that
supplies the UPS input, provides independent power sources for the two sides of the
system.
NEC Solutions (America), Inc. has qualified certain UPS models from American Power
Conversion Corporation (APC) for use with Express5800/320Ma systems. See the site
planning guide for your system for a list of the supported UPS models.
Connecting a UPS to an
Express5800/320Ma System
Connecting a UPS to an Express5800/320Ma System
Appendix A
A-1
A-