v
Both power supplies have built-in temperature sensors designed to prevent the
power supplies from overheating. If a temperature sensor detects an ambient air
temperature greater than 70° C (158° F), the “overheated” power supply
automatically shuts down. The second power supply remains on as long as its
temperature remains below 70° C (158° F). If the second power supply
overheats, it turns off all power to the FAStT900 Storage Server.
Note:
There is a serious problem if the air temperature inside the rack cabinet is
hot enough to cause the power supplies to shut down.
v
The FAStT900 Storage Server is capable of power-up recovery without operator
intervention. Once the air temperature cools to below 70° C (158° F), the power
supplies automatically restart. An automatic restart resets the controllers,
attempts to restart the hard disk drives, which has no effect on the hard disk
drives if they are already running, and returns the FAStT900 Storage Server to
normal operation.
v
When a power supply fails, the green power indicator light on the power supply
goes off and the amber power supply fault light is lit on the front of the FAStT900
Storage Server. For more information, see “Power supply indicator light” on
page 26 and “Storage server indicator lights” on page 20.
v
If you replace the power supply CRU and still experience problems, the
FAStT900 Storage Server might have defective components or connections.
Check the storage-management software for indications of other component
failures.
Replacing a failed power supply
When instructed by the storage-management software, replace a power supply.
1. Check the power supply indicator light on the back of the FAStT900 Storage
Server, as shown in Figure 44. Be sure that the green power indicator light on
the failed power supply is off.
Figure 44. Power supply switch, ac power connectors, and indicator lights
Chapter 3. Replacing the FAStT900 Storage Server components
51
Summary of Contents for TotalStorageFAStT900
Page 2: ......
Page 3: ...IBM TotalStorageFAStT900 Fibre Channel Storage Server User s Guide GC26 7534 00 ...
Page 7: ...IBM license agreement for Machine Code 70 Glossary 71 Index 79 Contents v ...
Page 8: ...vi IBM TotalStorageFAStT900 Fibre Channel Storage Server User s Guide ...
Page 10: ...viii IBM TotalStorageFAStT900 Fibre Channel Storage Server User s Guide ...
Page 12: ...x IBM TotalStorageFAStT900 Fibre Channel Storage Server User s Guide ...
Page 18: ...xvi IBM TotalStorageFAStT900 Fibre Channel Storage Server User s Guide ...
Page 62: ...36 IBM TotalStorageFAStT900 Fibre Channel Storage Server User s Guide ...
Page 86: ...60 IBM TotalStorageFAStT900 Fibre Channel Storage Server User s Guide ...
Page 108: ...82 IBM TotalStorageFAStT900 Fibre Channel Storage Server User s Guide ...
Page 111: ......
Page 112: ... Part Number 32P0341 Printed in U S A GC26 7534 00 1P P N 32P0341 ...