Adaptec 1542B - AHA Storage Controller Fast SCSI 10 MBps Informacje Techniczne Strona 44

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34 Netfinity and Windows 2000 Integration Guide
Figure 17. Cascading multiple hubs so that 37 ports are available
2.3.2.1 Netfinity Fibre Channel Hub GBICs
The device used to connect the fiber optic cables to the electrical interface within
the hub is known as a gigabit interface converter (GBIC). Four short-wave GBICs
are supplied with the hub.
In the Netfinity Fibre Channel solution there are two GBICs available:
Netfinity Fibre Channel Short-Wave GBIC, part 03K9308
Netfinity Fibre Channel Long-Wave GBIC, part 03K9307
Any combination of short and long-wave GBICs is supported. The hub can be
used for distance as well as expansion of your configuration.
The short-wave GBIC has a black casing as shown in Figure 18 and supports
multimode 50 micron fiber cables. The long-wave GBIC has a blue casing and
supports single-mode 9 micron fiber cables.
Figure 18. IBM Netfinity Fibre Channel Short-Wave GBICs
The GBIC packaging is designed to prevent improper insertion. The operational
loop performance is not affected when you install or remove a GBIC. GBICs are
hot pluggable.
If you insert a GBIC without cables attached, it will remain in the bypassed state,
which means the GBIC is active, but there are no active or valid return signals.
When you attach a cable and a valid signal is detected, the hub will allow the
GBIC and attached devices to join the loop.
Each of the level 2
hubs have six
ports available for
connection to six
RAID controller
units
The level 1 hub
has one port
available for
connection to
the host adapter
2098-02
1
1
2
3
4
5
6
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