AC Power Planning
2-1
Chapter 2
AC Power Planning
2-
This chapter describes the AC power requirements of ftServer V 2302, V 4304, and
V 6308 systems. It contains the following sections:
“AC Power Overview” on page 2-1
“Redundant Power Sources” on page 2-1
“AC Power and HVAC Worksheets” on page 2-2
“Selecting a UPS Unit for ftServer Systems” on page 2-4
“Power Cord Summary” on page 2-6
“Main Cabinet Ground Cables” on page 2-6
AC Power Overview
For fault tolerance, each ftServer system requires two separate and independent AC
power sources. These power sources feed two UPS units. The UPS units feed power
to power distribution units (PDUs) inside the main cabinet that, in turn, distribute power
to the system’s components.
Legacy E124 expansion storage-system cabinets also require two separate and
independent AC power sources, each fed by two UPS units.
You can use one of the UPS models that Stratus has qualified. See
Unit for ftServer Systems” on page 2-4
for more information.
You must also provide AC power to the system PC console, RSN console server, and
RSN modem (if present) located outside the main cabinet.
Redundant Power Sources
Each ftServer system requires two separate and independent AC power sources: an
A-side
power source and a
B-side
power source. Because either side must be capable
of continuing to provide power if power to the other side is lost, each power source must
provide uninterruptible AC power.
Each PDU receives power from its power source and distributes power to the
components inside the cabinet.
