IBM TotalStorage DS4300 Turbo, Инструкция по установке, использованию и обслуживанию

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Handling fiber-optic cables
Before using fiber-optic cables, read the following precautions.
Attention: To avoid damage to the fiber-optic cables, follow these guidelines:
v
Do not route the cable along a folding cable-management arm.
v When attaching to a device on slide rails, leave enough slack in the cable so that
it does not bend to a radius of less than 38 mm (1.5 in.) when extended or
become pinched when retracted.
v
Route the cable away from places where it can be snagged by other devices in
the rack.
v Do not overtighten the cable straps or bend the cables to a radius of less than 38
mm (1.5 in.).
v Do not put excess weight on the cable at the connection point. Be sure that the
cable is well supported.
Installing SFP modules
The DS4300 storage subsystem 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 DS4300 storage
subsystem supports two types of SFP modules; one with a plastic pull-tab latch and
one with a metal or plastic wire latch. After you install the SFP modules, you will
use fiber-optic cables to connect the DS4300 storage subsystem to other fibre
channel devices.
Before you install SFP modules and fiber-optic cables, read the following
information:
v The SFP module housing has an integral guide key designed to prevent you from
inserting the SFP module improperly.
v
Use 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.
v You can insert or remove the SFP module while the port is powered on.
v
The operational loop performance is not affected when you install or remove an
SFP module.
v You must insert the SFP module into a port before you connect the fiber-optic
cable.
Controller A Ethernet port
Controller B Ethernet port
ds43bac
k
ether
Figure 19. Location of Ethernet ports
Chapter 3. Cabling the storage subsystem
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