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.
Attention:
If you are restarting the system after a normal shutdown, wait at
least 60 seconds before you turn on the power.
3. Turn on the main circuit breakers in the cabinet.
Attention:
You
must
turn on power to each attached storage expansion
enclosure
before
turning on power to the DS5100 and DS5300 to ensure that
the controllers complete the startup process. If the DS5100 and DS5300
controllers do not find any drives present during the initial power on sequence,
the startup process does not complete. This will prevent controllers A and B
from communicating with each other, and any factory-installed premium features
will not be activated correctly.
4. 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 DS5100 and DS5300 drive port should be
lit.
Note:
The drive activity LEDs will flash slowly (once every 2 seconds) until the
drive is started by the DS5100 and DS5300 controller.
5. Turn on the ac power switch on the back of each controller in the storage
subsystem. Figure 91 shows the location of the ac power switches on the
controllers.
Depending on the number of storage expansion enclosures in the configuration,
the DS5100 and DS5300 might take several minutes to power up. The battery
self-test might take an additional 15 minutes. The LEDs will blink intermittently
ac power
connector
ac power
connector
ac power
switch
ac power
switch
ds50040
Controller A
Controller B
Figure 91. AC power switches on the controllers
132
IBM System Storage DS5100 and DS5300 Storage Subsystem: Installation, User’s, and Maintenance Guide