Chapter 2 System overview
5
The rear panel area hosts modules designed for power, thermal cooling, and host connectivity.
12Gb/s
12Gb/s
1
2
3
4
6
5
Item Description
Function
1
Power cooling module (PCM) Provides redundant regulation of power, temperature, and airflow
2
PCM release latch
Latches or unlatches PCM from midplane
3
Controller module (CM)
Provides data redundancy, acts as the nerve center of the storage enclosure
4
Inverted CM
5
Inverted PCM status LEDs
Provides users with PCM status
6
Inverted PCM power switch
Switches power on or off
Figure 2 2U12 and 2U24 rear panel area
5U enclosure components
The 5U84 chassis retains two sliding drawers, so has drawer panels that augment the operator's (ops) panel
on the left rack ear flange. Each drawer has its own set of dedicated connectors behind the midplane that allow
continuous operation, even if the drawer is extended to the fully open service position or closed with the
drawer latch engaged.
The front panel area is the primary physical user interface. Closely watch the ops and drawer panels for status.