Chapter 1 Description
Back Panel Components
Scalar i500 User’s Guide
20
Power System
1
The library supports single and redundant power configurations. The
single power configuration has a single AC line input and single DC
power supply. The redundant configuration has dual AC line input and
dual DC power supplies.
If you have redundant power supplies, you can hot swap a power supply
(power to the library remains on while you exchange the hardware), and
you can hot add power supplies to other modules (power to the library
remains on while you are adding the hardware).
The power system consists of the following components:
• Power supply
• AC power cord
Warning:
Turn off the rear power switch whenever you are servicing
the library. In the event of danger to personnel or
property, immediately turn off the rear power switch and
remove all power cords.
Caution:
Except in emergencies, use the shutdown procedure
before switching off the rear power switch. See
Shutting
Down or Restarting the Library
on page 145 for
instructions on how to shut down the library.
Warning:
The power outlet must be available near the library and
must be easily accessible.
Caution:
The control module and each expansion module that
contains drives must have at least one power supply for
every four drives. You can add a redundant power supply
to each module. Installing one power supply in one
module and another power supply in another module
does not provide redundant power; the two power
supplies must reside in the same module.
