Checking The Power Input Type; Redundant Configuration Of Power Supply Units - Fujitsu M10 Installation Manual

The SPARC M10 systems are designed to function in an environment with natural
convection airflow.
The following requirements must be followed to meet the environmental specifications.
Ensuring sufficient airflow for the entire system
■
Each chassis is equipped with a cooling function for front-to-rear cooling. Each
chassis has air vents on the front. Exhaust is expelled from the rear of each chassis.
The SPARC M10 systems use internal fans whose airflow reaches the maximum
exhaust airflow shown in
Example: 17.1 m
unit
Ensuring that temperature at the intake part of each chassis does not exceed the
■
limit value
Other devices mounted in the rack must not cause the temperature at the intake
part of any chassis to exceed the limit value. This limit value in environmental
conditions assumes that each chassis operates with the rack door closed.
2.8

Checking the Power Input Type

This section describes the power input types that can be used with the SPARC M10
systems. To prevent serious accidents, confirm that the power supply facilities can
supply sufficient redundant power to the system.
The server can use the following power input types:

Redundant configuration of power supply units

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Dual power feed
■
Three-phase power feed
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Uninterruptible power supply (UPS) connection (optional)
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2.8.1 Redundant configuration of power supply units
Each chassis has power supply units in a redundant configuration as standard. If a
failure occurs in one power supply unit, the system can still continue to operate with
the other power supply unit. However, if a failure occurs in the external power
supply, the system stops.
Figure
redundant power supply connections.
When connecting the power cords to the same input power supply, make sure to
connect each power cord to the connection destination in a one-to-one manner.
Table 2-9
3 3
(603.8 ft.
2-15, Figure 2-16, and Figure 2-17
under normal operating conditions.
) per minute for each SPARC M10-4/SPARC M10-4S
show power supply systems with
Chapter 2 Planning and Preparing for System Installation 43