![](/images/new-backgrounds/1191405/191405155x1.webp)
vDo not overtighten the cable straps or bend the cables to a radius of less than 38 mm (1.5 in.).
vDo not put excess weight on the cable at the connection point. Be sure that the cable is well supported.
Installing SFP modules
The DS4100 host 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 DS4100 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
Before you install SFP modules and
vDo not mix
vThe SFP module housing has an integral guide key designed to prevent you from inserting the SFP module improperly.
vUse minimal pressure when you insert the SFP module into a port. Forcing the SFP module into a port could cause damage to the SFP module or the port.
vYou can insert or remove the SFP module while the port is powered on.
vThe operational loop performance is not affected when you install or remove an SFP module.
vYou must insert the SFP module into a port before you connect the
vYou must remove the
To install an SFP module, complete the following steps.
Statement 3:
CAUTION:
When laser products (such as
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.
46IBM TotalStorage DS4100 Storage Server: Installation, User’s, and Maintenance Guide