Wire
tab
Protective
cap
o
SFP
module
90
Figure
25.
Unlocking
the
SFP
module
latch
- wire
variety
3. With the SFP latch in the unlocked position, extract the SFP module.
v
For SFP modules that contain plastic tabs, slide the SFP module out of the
port.
v
For SFP modules that contain wire tabs, grasp the wire latch and pull the
SFP module out of the mini-hub port.
4. Replace the protective cap on the SFP module.
5. Place the SFP module into a static-protective package.
6. Replace the protective cap on the host port.
Handling
fibre-optic
cables
Attention:
To avoid damage to your fibre-optic cables, follow these guidelines:
v
For devices on slide rails, leave enough slack in the cables so they do
not
bend
to a diameter of less than 76 mm (3 in.), or a radius less than 38 mm (1.5 in.),
when extended or become pinched when retracted.
v
Do not overtighten the cable straps or bend the cables to a diameter of less than
76 mm (3 in.), or a radius less than 38 mm (1.5 in.).
v
When storing excess or unused fibre-optic cables, do not bend the cables to a
diameter of less than 76 mm (3 in.), or a radius less than 38 mm (1.5 in.) or wrap
them around themselves. See Figure 26 on page 47.
v
Loop diameter of 76 mm (3 in.) and bend radius of 38 mm (1.5 in.) for fibre optic
cable are IBM DS4000 recommended minimums. Loops or bends smaller than
this recommendation may cause damage to your fibre optic cables. It is best
practice to use loop diameters and bend radii that are greater than these
recommended minimums.
v
Do not route the cable along a folding cable-management arm.
v
Route the cable away from places where it can be damaged by other devices in
the rack cabinet.
v
Do not put excess weight on the cable at the connection point. Be sure that the
cable is well supported.
v
Do not use plastic cable ties in place of the provided cable straps.
v
The following are the supported maximum cable lengths:
– 1 Gbps: 500 meters 50/125 um fibre, 300 meters 62.5/125 um fibre
– 2 Gbps: 300 meters 50/125 um fibre, 150 meters 62.5/125 um fibre
– 4 Gbps: 150 meters 50/125 um fibre, 70 meters 62.5/125 um fibre
46
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide
Summary of Contents for DS4000 EXP810
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