vThe operational or redundant loop performance is not affected when you install
or remove an SFP module.
vYoumust insert the SFP module into a port before you connect the fiber-optic
cable.
vYoumust remove the fiber-optic cable from the SFP module before you remove
the SFP module from the port. Refer to “Removing SFP modules” on page 50 for
more information.
vThe 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 4 Gbps SFP that is plugged into an 8
Gbps-capable port will limit the speed of that port to a maximum of 4 Gbps.
Conversely, an 8 Gbps SFPthat is plugged into a 4 Gbps-capable port will limit
the speed of the port to a maximum of 4 Gbps.
Attention: Carefully check the SFP IBM part number, option number,and FRU
part number to identify its speed. There are no physical features that distinguish
a 4 Gbps SFP from an 8 Gbps SFP.
Statement 3:
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber-optic devices, or
transmitters) are installed, note the following:
vDo not remove the covers. Removing the covers of the laser product could
result in exposure to hazardous laser radiation. There are no serviceable
parts inside the device.
vUse of controls or adjustments or performance of procedures other than
those specified herein might result in hazardous radiation exposure.
DANGER
Some laser products contain an embedded Class 3A or Class 3B laser
diode. Note the following.
Laser radiation when open. Do not stare into the beam, do not view directly
with optical instruments, and avoid direct exposure to the beam.
Attention: When you handle static-sensitive devices, take precautions to avoid
damage from static electricity. For details about handling static-sensitive devices,
see “Handling static-sensitive devices” on page 29.
Toinstall an SFP module, complete the following steps:
1. Remove the SFP module from its static-protective package.
2. Remove the protective cap from the SFP module, as shown in Figure 26 on
page 50. Save the protective cap for future use.
Chapter3. Cabling the storage subsystem 49