Chapter 3: Subsystem Connection
Topology and
Configuration Considerations
3-3
3.1.3 SFP Transceivers
SFP transceivers should typically have at least 4Gbps bi-directional data
links, a laser transmitter (for fiber optic cables), low-profile LC connector,
and a metal enclosure to lower the EMI.
NOTE:
LC connectors are small form-factor, fiber-optic connectors based on a
1.25-mm ceramic ferrule with a latching mechanism.
Other beneficial features of a typical SFP transceiver include a single power
supply, low power dissipation, and hot-swap capability. It is also important
that any transceiver you use meets the FC performance and reliability
specifications.
NOTE:
You may purchase the SFP transceivers (GAL-9270CSFP4GA01) from
your Galaxy subsystem vendor/distributor.
3.1.4 FC Port Dust Plugs
Each controller module comes with plastic dust plugs that cover the FC
ports on the controller module. These plugs help keep the interface contacts
from contaminants and maintain the internal cooling airflow. Until you are
ready to insert a SFP transceiver, these plastic plugs should be left in place.
Remove the dust plugs simply by pulling them out. Insert an SFP
transceiver immediately after a FC port dust plug is removed. Keep the dust
plugs for future use if SFP transceivers should be removed for a
configuration change.
NOTE:
Be sure to clean a dust plug using a clean, static-free clothe or
compressed air before you re-inset it into an SFP socket.
3.2 Topology and Configuration Considerations
3.2.1 Basic Configuration Rules
When you are cabling your subsystem, the following are some basic rules
that should be followed.
