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2. Ensure that all power cords are connected.
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
5. Turn on both power switches on the back of each storage expansion enclosure
6. Turn on both AC power switches on the back of each controller in the storage
Figure 61. Power supply switches and connectors for the DS4200 Express
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IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide
v Yes - Turn off both power switches on each enclosure that you intend to
connect to the power.
v No - Turn off both power switches on all enclosures in the storage
subsystem.
Note: If the power cords are not connected, turn off both power switches on all
modules in the configuration before connecting power cords or turning on
the main circuit breakers.
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 DS4200 Express Storage Subsystem
to ensure that the controllers recognize all drives in the configuration during the
startup process.
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.
Note: The drive activity LEDs will flash slowly (once very 2 seconds) until the
drive is started by the DS4200 Express controller.
subsystem. Figure 61 shows the location of the AC power switches on the
controllers.
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ds420010
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