Hp NonStop G-Series Manual de usuario Pagina 51

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Switch Modules
ServerNet Nomadic Disk User’s Guide425485-001
4-7
Switch Card
Switch Card
Switch cards, which occupy slots 1 through 8 of a switch module, control the path of
fiber-optic signals between the 45xx disk modules and one of two nodes. A switch card
has two positions: straight and crossed. A switch module connects to two nodes; either
node can control the disk modules depending on the position as indicated by the switch
cards. Each switch card connects to two ServerNet/DAs and to a 45xx disk module. To
ensure that all ServerNet/DAs are accessible, each switch module contains at least two
switch cards.
A switch card has these components:
Switch Card Toggle Switches on page 4-8
Switch Card LEDs on page 4-9
Faceplate of a Switch Card
3131
J4
J3
J2
J1
Toggle Switch
Fault LED
Switch Indicator:
Crossed Position
MIC MMF Connector
MIC MMF Connector
MIC MMF Connector
MIC MMF Connector
MIC MMF Connector
Switch Indicator:
Straight-Through Position
VST006.vsd
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