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Determining the Number of Power Supplies Required
12
IBM 8265: Planning and Site Preparation Guide
The number of power supplies required to operate the 8265 and all installed modules
is determined by adding together:
•
The system overhead, the power required by the 8265 to operate the fans and
backplane, which is 1 Watt at +5.2 volts.
•
The total power requirement (at +5.2 volts) of all installed modules (and daughter
cards).
When you have calculated the total power required, you can determine how many
power supplies are needed (see page 14).
If power fault-tolerance is required, then at least one additional power supply should
be installed.
Module Power Requirements
Table 12 lists the power requirements for the 8265 modules and daughter cards.
Table 12. 8265 Module and Daughter Card Power Consumption
Type
Modules
Control Point & Switch
Controller
4-port 155Mbps (MMF)
4-port 155Mbps (Flex)
1-port 622Mbps (MMF)
1-port 622Mbps (SMF)
4-port 100Mbps
12-port 25Mbps
ATM WAN 2
Video Distribution
MSS Server (8210)
ATM/Ethernet (8271)
ATM/Ethernet (8271)
ATM/Ethernet (8272)
ATM/Ethernet (8272)
Daughter Cards for 4-Port 155Mbps Flex Module:
MM Fiber I/O Card
SM Fiber I/O Card
UTP/STP I/O Card
Daughter Card for 12-Port 25Mbps Module:
155Mbps I/O card
Feature
Slot
Code
Width
6501
2
8000
1
6540
1
6543
1
6511
1
6512
1
5104
1
5012
1
5602
1
5008
2
5300
2
5212
2
5312
3
5208
2
5308
3
6580
—
6581
—
6582
—
8510
Power Required
(Watts @ +5.2 Volts)
80
5
29
20
28
28
35
25
18.4
62.5
42
58.5
58.5
30
30
2.5
2.5
2.5
10
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