Instruction manual

1. Components Overview
5
Figure 1-5 Rear of the Switch (with an AC power supply unit installed)
Figure 1-6 Rear of the Switch (with a DC power supply unit installed)
(3) Number of installed power supply units and installation location
NOTE
Power supply units come in an AC model and a DC model. Do not
install both an AC power supply unit and DC power supply unit on a
single Switch.
If you install both units, they will not operate properly.
 When installing AC power supply units
When AC power supply units are installed on a Switch, the redundancy method is
4+4 redundancy.
In this method, four basic power supply units and four additional power supply units
for redundancy are required.
For the installation locations of the power supply units, see the following table.
Table 1-1 Installation locations of AC power supply units
Basic Redundancy
Power supply
redundancy
method
Power supply
redundancy
PS1 PS2 PS3 PS4 PS5 PS6 PS7 PS8
None Y Y Y Y N N N N 4+4 redundancy
Required Y Y Y Y Y Y Y Y