Fujitsu M10 Series - Figure 6.1 System Based on a UPS; Figure 6.2 System Based on a UPS and an Independent Power Generator; Selecting Power Supply Facilities

C120-H007-08EN 69
6.2 Power Supply Facilities
6.2.2 Selecting power supply facilities
Select power supply facilities to suit the available power source at the installation site,
and the operational importance of the server system.
(1) Systems that cannot tolerate service disruption
a) Power failure-free system
Use of a UPS is mandatory for server systems that cannot tolerate service disruption
at any time even the instantaneous interruption or power failure of commercial
power supply.
Figure 6.1 shows the configuration example of a server system which uses a UPS.
Note: Secondary side of UPS is isolated or neutral.
Figure 6.1 System based on a UPS
b) Long-duration power failure-free system
A UPS combined with an independent power generator provides a solution for
longer term power failures as shown in Figure 6.2.
Figure 6.2 System based on a UPS and an independent power generator