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The LEDs on the power supply are shown in the following illustration.
AC power LED (green)
DC power LED (green)
Fault LED (amber)
OK to remove LED (blue)
Rear view: ESMs
The connectors on the ESM are shown in the following illustration.
SAS out connector
Service port
Ethernet port
SAS in connector
20
System Storage EXP2512 and EXP2524: Installation and Maintenance Guide
When this green LED is lit, it indicates that the EXP2500 is receiving ac
power.
When this green LED is lit, it indicates that the EXP2500 is turned on and is
supplying both 5-volt and 12-volt dc power to the EXP2500.
When this amber LED is lit, it indicates that a power supply or fan has
failed or that a redundant power supply is not turned on.
Not in use.
SAS out
Service
connector
port
Connect a SAS cable to this connector and to the SAS In (↑) connector of
another EXP2500.
This port is reserved for service technicians.
The Ethernet port is used for remote management and diagnostics.
Note: Do not connect the Ethernet port to the public network.
Connect a SAS cable to this connector and to an IBM SAS RAID controller
or the SAS Out (↓) connector of another EXP2500 enclosure.
DC power
AC power in
LED (green)
LED (green)
IN
OK
Fault LED
(amber)
Ethernet
SAS in
port
connectors
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