4 Sun SPARC Enterprise T5140 and T5240 Servers Installation Guide • December 2010
■ Two redundant, DC power supplies
Note – Safety agency requirements prohibit manufacturers from changing a product
from AC input to DC input or from DC input to AC input after the product has been
removed from the agency approved manufacturing site.
Note – The DC version of the server must be installed in a restricted-access location.
According to the intent of the National Electrical Code, a restricted-access location is
an area intended for qualified or trained personnel only and has access controlled by
a locking mechanism, such as a key lock or an access card system.
When each power supply is connected to a separate power source, the server
continues to operating under the following fault conditions:
■ A power source failure that removes input power from one of the power supplies.
■ Failure of one of the power supplies.
■ Service actions which require removal of one of the power supplies.
Refer to the Sun SPARC Enterprise T5140 and T5240 Servers Site Planning Guide for
input power specifications.
Note – Input AC/DC power cables: To avoid missing initialization messages, do not
attach power cables to the power supplies until you have finished connecting the
data cables, and have connected the server to a serial terminal or a terminal emulator
(PC or workstation). The server goes into Standby mode and the ILOM service
processor initializes as soon as the input power cables are connected to the power
source.
Related Information
■ Sun SPARC Enterprise T5140 and T5240 Servers Site Planning Guide
Tools and Equipment Needed
To install the system, you must have the following tools:
■ No. 2 Phillips screwdriver
■ No. 1 Phillips screwdriver
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