IBM FAStT500 User Guide - Page 43

Turning on the power after an overtemperature shutdown, Turning on the power after an emergency

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Turning on the power after an overtemperature shutdown If your controller unit shuts down unexpectedly, use the storage-management software to determine if the controller unit is overheated. If an overtemperature shutdown is indicated, use the following procedure to regain normal system operation. 1 Turn off the power switches and cool the controller unit (for example, replace the fans, use external fans to cool the room, and so on). 2 Once the air temperature is below the upper operating temperature of 45°C (113°F), turn on the power switches. 3 Check the controller unit for faults or damage. Use the storage-management software to check the overall status of the controller unit and its components. Repair any faults found. Turning on the power after an emergency shutdown Use this procedure to regain normal system operation after a power failure or emergency shutdown. 1 After the emergency situation is over or power is restored to the building, check all components and cables for damage. If there is no visible damage, continue with Step 2; otherwise, have your system serviced. 2 Make sure the power cords are plugged in. 3 Turn on the circuit breakers in the cabinet and turn on the power switches on all drive enclosures attached to the controller unit. If the system is off because of a power outage, the power switches are already on. Important: You must turn on the drive enclosures before, or at the same time as, the controller unit. The controllers might not recognize the correct configuration if the attached drives are powered up after the controller unit. If you plan to use the main breaker to turn on all enclosures at the same time, make sure that the switches on each drive enclosure and each controller unit are on before turning on the main breaker. For instructions on powering up the drive enclosures, refer to the drive enclosure documentation. 4 Turn on both power switches on the back of the controller unit (see Figure 8 on page 12). 5 Check the status of the controller unit and other devices. Make sure all fault indicator lights are off on the front and back of the controller unit. For more information, see "Checking the indicator lights" on page 15. 6 When all the devices on the system are powered up, check the overall system status using the storage-management software. Chapter 2. Operating the controller unit 23

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Chapter 2. Operating the controller unit
23
Turning on the power after an overtemperature shutdown
If your controller unit shuts down unexpectedly, use the storage-management software to
determine if the controller unit is overheated. If an overtemperature shutdown is indicated,
use the following procedure to regain normal system operation.
1
Turn off the power switches and cool the controller unit (for example, replace the fans,
use external fans to cool the room, and so on).
2
Once the air temperature is below the upper operating temperature of 45°C (113°F),
turn on the power switches.
3
Check the controller unit for faults or damage. Use the storage-management software
to check the overall status of the controller unit and its components. Repair any faults
found.
Turning on the power after an emergency shutdown
Use this procedure to regain normal system operation after a power failure or emergency
shutdown.
1
After the emergency situation is over or power is restored to the building, check all
components and cables for damage. If there is no visible damage, continue with
Step 2
;
otherwise, have your system serviced.
2
Make sure the power cords are plugged in.
3
Turn on the circuit breakers in the cabinet and turn on the power switches on all drive
enclosures attached to the controller unit. If the system is off because of a power
outage, the power switches are already on.
Important:
You must turn on the drive enclosures before, or at the same time as, the
controller unit
. The controllers might not recognize the correct configuration
if the attached drives are powered up after the controller unit. If you plan to
use the main breaker to turn on all enclosures at the same time, make sure
that the switches on each drive enclosure and each controller unit are on
before turning on the main breaker. For instructions on powering up the drive
enclosures, refer to the drive enclosure documentation.
4
Turn on both power switches on the back of the controller unit (see
Figure 8 on page
12
).
5
Check the status of the controller unit and other devices. Make sure all fault indicator
lights are off on the front and back of the controller unit. For more information, see
"Checking the indicator lights" on page 15
.
6
When all the devices on the system are powered up, check the overall system status
using the storage-management software.