Installing Sfp Modules - IBM DS5100 Installation, User's, And Maintenance Manual

Figure 18. Best practice bending and looping specifications for fibre-optic cables

Installing SFP modules

The DS5100 and DS5300 Fibre Channel host and drive channel ports require SFP
modules. SFP modules are used to convert electrical signals to optical signals that
are required for fibre channel transmission to and from RAID controllers. The
DS5100 and DS5300 supports two types of SFP modules: one with a plastic latch
and one with a wire latch. After you install the SFP modules, you use fiber-optic
cables to connect the DS5100 and DS5300 to other fibre channel devices.
Note: The iSCSI host port comes with an on-board RJ-45 interface module. No
Before you install SFP modules and fiber-optic cables, read the following
information:
v Use only short-wave/multimode SFPs in DS5100 and DS5300 host or drive ports.
v The SFP module housing has an integral guide key designed to prevent you from
v Use minimal pressure when you insert the SFP module into a port. Forcing the
v You can insert or remove the SFP module while the port is powered on.
v Do not install an SFP in any port that will not have a fibre optic cable attached.
v The operational loop performance is not affected when you install or remove an
– 8 Gbps: 50 meters (164 ft.) of 50/125 um fiber, 150 meters (492 ft.) of
62.5/125 um fiber
additional hardware is required.
In DS5100 and DS5300 configurations, you may use long-wave SFPs only in
fibre channel switches that connect DS5100 and DS5300s over long distances.
inserting the SFP module improperly.
SFP module into a port could cause damage to the SFP module or the port.
Additionally, it is a best practice that you remove any SFP from any port that
does not have fibre optic cables attached.
SFP module.
1.5 inch
(38 mm)
radius
3.0 inch
(76 mm)
diameter
Chapter 3. Cabling the storage subsystem
49