Lever
Latch
Figure
8.
The
dc
power
supply
and
fan
unit
and
airflow
Small
Form-Factor
Pluggable
(SFP)
modules
The storage expansion enclosure supports fibre optic host interface cables. You
must install a Small Form-factor Pluggable (SFP) module in each interface
connector on the controller where a fibre optic cable is to be installed.
Attention:
The maximum operating speed of the fibre channel port is determined
by two factors: the speed of the SFP module that is installed and the speed of the
fibre channel connection. For example, a 2-Gbps SFP that is plugged into a
4-Gbps-capable port will limit the speed of that port to a maximum of 2 Gbps.
Conversely, a 4-Gbps SFP that is plugged into a 2-Gbps-capable port will limit the
speed of the port to a maximum of 2 Gbps. Carefully check the SFP’s IBM part
number, option number, and FRU part number to identify its speed. There are no
physical features that distinguish a 4 Gbps from a 2 Gbps SFP.
Figure 9 on page 13 shows an SFP module with fibre optic cable.
Note:
The SFP module shown might look different from those shipped with your
storage expansion enclosure. The differences does not affect transceiver
performance.
12
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide
Summary of Contents for DS4000 EXP810
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