Figure 4 5U84 Rear Panel Area - Quantum QXS Series Hardware Installation And Maintenance Manual

The rear panel area provides you access to modules designed for power, thermal cooling, and host
connectivity.
1
Item Description
1 Controller module (CM)
2 CM release latch
3 CM release latch and handle
4 Fan cooling module (FCM)
5 FCM release latch
6 FCM pull handle
7 Power supply unit (PSU)
8 PSU release latch
9 PSU pull handle
10 PSU power switch
Two sliding drawers hold DDICs and their related sideplanes.
Two drawers each can contain 42 DDICs. Drawer slides lock the drawer in the fully open service position,
l
so require release latch activation to close the drawer.
DDICs slide into 42 slots in each drawer. The upper drawer, Drawer 1, contains slots logically numbered
l
from 0 to 41 in rows moving from top to bottom, then from left to right. The lower drawer, Drawer 2, contains
slots logically numbered from 42 to 83, following the same pattern.
2 3
6 7
Function
Provides data redundancy and is the nerve center of the storage enclosure
Provides full contact with midplane or releases CM for inspection and service
Provides redundant regulation of temperature and airflow
Provides full contact with midplane or releases FCM for inspection and service
Provides redundant regulation of power
Provides full contact with midplane or releases PSU for inspection and service
Powers on or off the storage enclosure

Figure 4 5U84 rear panel area

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8 9 10
Chapter 2 System overview 7