12 Components
Controller enclosure—rear panel layout
The diagram and table below display and identify important component items comprising the rear panel layout of the
MSA 1050 controller enclosure. An enclosure configured with SFPs is shown.
Figure 4 MSA 1050 Array: rear panel
A controller enclosure accommodates a power supply FRU in each of the two power supply slots (see two instances of
callout 1 above). The controller enclosure accommodates two controller module FRUs of the same type within the I/O
module slots (see callouts 2 and 3 above).
IMPORTANT: MSA 1050 controller enclosures support dual-controller only. If a partner controller fails, the array will fail
over and run on a single controller until redundancy is restored. A controller module must be installed in each IOM slot to
ensure sufficient airflow through the enclosure during operation.
The diagrams with tables that immediately follow provide descriptions of the different controller modules and power
supply modules that can be installed into the rear panel of an MSA 1050 controller enclosure. Showing controller modules
and power supply modules separately from the enclosure provides 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 MSA 1050 controller enclosures for expanding storage capacity.
NOTE: MSA 1050 controller enclosures support hot-plug replacement of redundant controller modules, fans, power
supplies, disk drives, and I/O modules. Hot-add 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)
11
2
3
MSA 1050 controller enclosure
(rear panel locator illustration)
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