Esms And User Controls - IBM TotalStorage DS4000 EXP100 Installation, User's, And Maintenance Manual

Figure 6. ESMs and user controls
The following list describes each of the user control features that are shown in
Figure 6.
v SFP module input and output ports: Each ESM has two SFP module
v ESM latch: The ESM latch secures the ESM to the expansion enclosure.
v ESM levers: Unlock the ESM latch before you use the ESM levers to remove the
v Fault LED: The amber ESM Fault LED lights when an ESM failure occurs. The
v Input/output bypass LEDs: These amber LEDs light when a faulty SFP module
v Power LED: The green Power LED lights when there is power to the ESM.
v Over-temperature LED: The amber over-temperature LED lights if the
v Enclosure ID switches: Two enclosure ID switches are located between the
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IBM TotalStorage DS4000 EXP100 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
SFP output port
ESM lever
Output bypass LED
Over-temperature LED
Fault LED
Power LED
Input bypass LED
SFP input port
ESM lever
ESM latch
1Gb/s / 2Gb/s
switch
connector ports that you use to connect the expansion enclosure to the DS4000,
or to connect two or more EXP100 expansion enclosures together. Install an SFP
module into the input and output ports. Use Fibre Channel cables to connect the
expansion enclosure to the DS4000 or to additional expansion enclosures.
ESM from the expansion enclosure. When you install the ESM into the bay, use
the ESM levers to guide the unit into the ESM bay.
Fault LED also lights for approximately 15 seconds when you power on the
expansion enclosure.
or fiber-optic cable is installed. Both ports on the ESM are bypassed when an
ESM fault occurs and the ESM Fault LED and the Input and Output bypass LEDs
light. This LED also lights if an SFP module is installed and is not connected to
another device.
expansion enclosure overheats.
power supplies at the rear of the EXP100. These switches identify the EXP100
on a Fibre Channel loop. To set the values, use the end of a paper clip or a
small flat-blade precision screwdriver to press the small, recessed buttons on
each switch. The top (-) buttons decrease the value and the bottom (+) buttons
increase the value, as shown in Figure 7 on page 21, which displays an example
ESM boards
1 Gb/s 2 Gb/s
X10 X1 Conflict
Tray Number
Enclosure ID
Enclosure ID
switch tens
switch ones
place (X10)
place (X1)
SFP input port
ESM lever
Input bypass LED
Power LED
Fault LED
Over-temperature LED
Output bypass LED
SFP output port
ESM lever
ESM latch
Switch cover plate