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8
Hot-plug Components
This chapter describes how to handle hot-plug components and/or how to
modify your server hardware.
The hot-plug procedure (replacing and adding components while the system is
operating) enhances the availability of system operation, ensuring a high
degree of data security and system stability.
First, hot-plug components are described which are directly accessible from the
outside: power supply units, fans and HDD modules. After that, hot-plug compo-
nents are treated which are only accessible after removing the cover: memory
boards and PCI boards.
V
CAUTION!
Please observe the safety information in
chapter “Important Notes”
on page 19
.
V
CAUTION!
Defective hot-plug components should be replaced as soon as possible.
Above all, this applies to system fans and power supply units.
I
Upgrading or replacing fix installed components is described in the
Options Guide or in the Service Manual and may only be performed by
qualified maintenance staff.
8.1
Replacing a Hot-plug Power Supply Unit
The server has two hot-plug power supply units installed, ensuring a redundant
power supply. If one unit fails, the other unit ensures unimpaired further
operation. The defective power supply unit can be replaced during operation.
V
CAUTION!
Before replacing a non-defective hot-plug power supply unit in a non-
redundant configuration (only one power supply unit present), the server
must be switched OFF.