IBM System Storage EXP2512 Express Storage Enclosure, Installation, User'S, And Maintenance Manual

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Turning on the EXP2500 after an emergency
To restart the EXP2500 after an emergency shutdown, or if a power failure or a
power outage occurred, complete the following steps:
1. After the emergency situation is over or power is restored, check the EXP2500
for damage. If there is no visible damage, continue with step 2; otherwise, have
your unit serviced.
2. Check the system documentation for the hardware devices that you intend to
turn on, and determine the correct power-on sequence.
Note: Be sure to power-on the EXP2500 before or at the same time you
power-on the device that contains the RAID controller to which the EXP2500 is
connected.
3. Turn on each connected device, according to the power-on sequence that is
described in the documentation that comes with the device.
4. Connect the EXP2500 power cables to power both power supplies on the rear
of the EXP2500.
5. Make sure that only the power (green) LEDs on the front and rear are lit. If one
or more of the fault (amber) LEDs are lit, see Chapter 5, “Solving problems,” on
page 41 for instructions.
6. Use the RAID controller management software as applicable to check the status
of the EXP2500.
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System Storage EXP2512 and EXP2524: Installation and Maintenance Guide