AssuredSAN 4004 Series Setup Guide 21
Figure 10 4004 Series controller enclosure: rear panel (2U)
A controller enclosure accommodates two power supply FRUs of the same type within the two power
supply slots (see two instances of callout No.1 above). The DC option is not applicable for the
high-capacity 2U48 chassis. The controller enclosure accommodates up to two controller module FRUs of
the same type within the I/O module (IOM) slots (see callouts No.2 and No.3 above).
IMPORTANT: If the 4004 Series 2U24 or 2U12 enclosure is configured with a single IOM, the IOM must
be installed in the upper slot (see callout No.2 above), and an I/O module blank must be installed in the
lower slot (see callout No.3 above). This configuration is required to allow sufficient air flow through the
enclosure during operation.
IMPORTANT: 2U48 controller enclosures support dual-controller configuration only. Single-controller
support is provided only when a controller fails over to its partner controller. A controller module must be
installed in each IOM slot to ensure sufficient air flow through the enclosure during operation.
The diagrams with tables that immediately follow provide descriptions for the different controller modules
and power supply modules that can be installed into the rear panel of a 4004 Series controller enclosure.
Showing controller modules and power supply modules separately from the enclosure enables improved
clarity in identifying the component items called out in the diagrams and described in the tables.
Descriptions are also provided for optional drive enclosures supported by 4004 Series controller enclosures
for expanding storage capacity.
NOTE: 4004 Series enclosures support hot-plug replacement of redundant controller modules, fans,
power supplies, and expansion modules. Hot-add replacement of drive enclosures is also supported.
1 AC power supplies
2 Controller module A (see face plate detail figures)
3 Controller module B (see face plate detail figures)
4 DC power supply (2) — (DC model only)
5 DC power switch
1
4
5
(DC power supply unit (PSU) is mutually exclusive to the AC model)
1
2
3
4824/4834 model is shown as a locator example
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