IBM DS4700 manual Cabling the storage subsystem

vYou must 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 60 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 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.

Attention: 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.

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 33.

To install 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 34 on page 60. Save the protective cap for future use.

Chapter 3. Cabling the storage subsystem 59