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To turn the EXP810 on and off complete the following steps:
70
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User's and Maintenance Guide
Attention:
1. Potential damage to E-DDMs - Repeatedly turning the power off and on
without waiting for the E-DDMs to spin down can damage them. Always wait
at least 70 seconds from when you turn off the power until you turn it on
again.
2. If you are connecting a power cord to a storage expansion enclosure, turn off
both of its power switches first. If the main circuit breaker is off, be sure both
power switches are off on each storage expansion enclosure in the cabinet
before turning on the main circuit breakers.
1. Are the main circuit breakers turned on?
v Yes - Turn off both power switches on each storage expansion enclosure
that you intend to connect to the power.
v No - Turn off both power switches on all storage expansion enclosures in
the storage subsystem. For dc power supply and fan units only, turn off the
disconnect devices for all of the dc power supply and fan units.
2. Connect the power cords to the power supplies on each storage expansion
enclosure. See "Cabling the ac power supply" on page 61 or "Cabling the dc
power supply" on page 62 for details, depending on your model.
3. If the main circuit breakers are turned off, turn them on.
4. Verify that the link rate setting on the front of the storage expansion enclosure
matches the speed of the drives in the subsystem.
Attention:
You must turn on power to each attached storage expansion
enclosure before turning on power to the storage subsystem to ensure that the
controllers complete the startup process. If the controllers do not find any
drives present during the initial power on sequence, the storage subsystem will
not complete the startup process. This will prevent controllers from
communicating with each other, and any factory-installed premium features will
not be activated correctly.
5. (For models with dc power supply and fan units only.) Verify that any attached
disconnect devices are turned ON.
6. Turn on both power switches on each storage expansion enclosure attached to
the storage subsystem. While each storage expansion enclosure powers up,
the green and amber LEDs on the front and back of the storage expansion
enclosure turn on and off intermittently. Depending on your configuration, it can
take several minutes for each storage expansion enclosure to power up.
Check the LEDs on the front and back of all the storage expansion enclosures.
Verify that no Needs Attention or enclosure ID LEDs light on any of the storage
expansion enclosures. To verify the fibre channel connections between the
drive expansion enclosures, make sure that no Port Bypass LEDs for
connections to other storage expansion enclosures are lit. Only the Port
Bypass LED of the ESM port that connects directly to the storage subsystem
drive port should be lit.
7. Turn on both power switches on the back of the DS4000 storage subsystem.
See Figure 5 on page 9 or Figure 7 on page 11 for location of power switches,
depending on your model.
Depending on the number of storage expansion enclosures in the
configuration, the storage subsystem might take several minutes to power up.
The battery self-test might take an additional 15 minutes. The LEDs will blink
intermittently until the storage subsystem powers up and completes the battery
self-test. Before attempting any operations, wait at least five minutes for the
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