Filter
Top Products
Table 1. Components of the 8250 Adapter Kit for 8260
Adapter kit Component 4-slot Feature 9-slot Feature 16-slot
Feature
Left Boundary Adapter 1 1 1
Right Boundary Adapter 1 1 1
Dual-Slot Top Filler 1 3 7
Single-Slot Top Filler 1 2 1
Dual-Slot Module Ejector Blocks 4 9 16
8250 Module Blank Faceplate 3 8 15
1.2.1.3 Fault-Tolerant Controller Module Slots
The Controller module provides all the clocking signals for the 8260. It is also
used to provide management of the power subsystem and the cooling
subsystem.
The 8260 chassis has two dedicated slots for the use of the Fault-Tolerant
Controller modules. These are referred to as slots 18 and 19. The 8260 Model
17 arrives with 1 Controller module as standard which is required for the
operation of the 8260. You may install a second Controller module which will be
used to back up the primary Controller module in case of failure. Fault tolerance
is established when there are two Controller modules installed. Either module
may be the master but in the event of the master Controller module failing and
the standby Controller module taking over, the network
will
be disrupted.
1.2.1.4 The Intelligent Power Subsystem
The power subsystem provides an easy access power bay which can support up
to four load-sharing, high capacity, managed power supplies. The 8260 Model
017 arrives with one power supply as standard and you may optionally install
three additional power supplies. Features of the power subsystem are:
•
Accessibility
The power bay is easily accessed from the front of the 8260.
•
Hot pluggability
You may install or remove power supplies while the hub is operating from
the other installed power supplies.
•
High capacity power supplies
Each power supply provides up to 295 watts of power.
•
Load sharing capability
The power consumption is evenly distributed over all the power supplies.
•
Power management
Using a combination of the DMM and the Controller module the power
subsystem can be monitored and controlled in either fault tolerant or
non-fault tolerant mode.
All of these features add up to a true seamless redundancy of the power
subsystem. The intelligent power subsystem is fully described in Chapter 5,
“8260 Intelligent Power Management Subsystem” on page 73.
6 8260 Multiprotocol Intelligent Switching Hub