Product manual

CDA 7 Hardware
77 A1 69UP Rev00 2-3
2.1.1 Component Location
These components have the following functions:
Cooling Fan Modules
Contains fans for maintaining air circulation and cooling the unit internally.
Card Cage and Backplane
Contains eight slots to accommodate director, cache, and adapter cards. The
directors and cache cards connect to the front of the backplane. The adapter cards
connect to the rear of the backplane.
Disk Devices
Contain up to 32 x 3.5-inch disk-devices for data storage.
Bus and Tags Connector Panel
Connectors for bus and tag cables that serve as the external interface to mainframe
hosts.
Battery Subsystem
Maintains power for three minutes to the entire subsystem if AC power fails.
Power Subsystem
Two power supplies provide +5V, +12V, and +24V power to the CDA 7
components.
Ethernet Hub
The Ethernet board allows the CDA 7 to communicate with each disk director or
channel director. It is located just below the service processor.