IBM Type 8677 Manuale Utente
Power modules
Note: The IBM BladeCenter E type 8677 and 1881 chassis must be configured to
support 2320-watt power modules. See the IBM BladeCenter E 2320 Watt Power
Modules Installation Guide for specific information and instructions.
support 2320-watt power modules. See the IBM BladeCenter E 2320 Watt Power
Modules Installation Guide for specific information and instructions.
Your BladeCenter unit comes with one pair of 220-volt hot-swap power modules in
power bays 1 and 2 that provides power to all the BladeCenter modules and to
blade bays 1 through 6. The BladeCenter unit supports a second pair of power
modules in power bays 3 and 4 that provides power to blade bays 7 through 14.
power bays 1 and 2 that provides power to all the BladeCenter modules and to
blade bays 1 through 6. The BladeCenter unit supports a second pair of power
modules in power bays 3 and 4 that provides power to blade bays 7 through 14.
Each pair of power modules is redundant. If either power module fails, the
remaining power module continues to supply power, but there is no redundancy; the
failed power module must be replaced as soon as possible.
remaining power module continues to supply power, but there is no redundancy; the
failed power module must be replaced as soon as possible.
To provide true redundant power, BladeCenter power modules 1 and 3 must
connect to a different ac power source than power modules 2 and 4. Connect
BladeCenter power modules 1 and 3 to a different PDU than power modules 2 and
4; then, connect each PDU to an ac power source (building power source or service
entrance) that is controlled by a separate circuit breaker.
connect to a different ac power source than power modules 2 and 4. Connect
BladeCenter power modules 1 and 3 to a different PDU than power modules 2 and
4; then, connect each PDU to an ac power source (building power source or service
entrance) that is controlled by a separate circuit breaker.
The following table summarizes the application for each power module
Bays
Power module function
1 and 2
Provides power to all the BladeCenter modules and to blade bays 1 through 6
3 and 4
Provides power to blade bays 7 through 14
Power modules are not needed in bays 3 and 4 until you begin installing blade
servers and options in blade bays 7 through 14.
servers and options in blade bays 7 through 14.
Note: If you install a blade server that has a storage expansion unit option
attached in blade bay 6, the option will use blade bay 7; power modules will be
required in power bays 1, 2, 3 and 4.
attached in blade bay 6, the option will use blade bay 7; power modules will be
required in power bays 1, 2, 3 and 4.
Each active power module supplies 12 volts of power to the blade bays it services.
Important: Plug one end of each power-module power cord into the power module;
plug the other end of the power cord into a 220-volt power distribution unit (PDU).
plug the other end of the power cord into a 220-volt power distribution unit (PDU).
Blower modules
Your BladeCenter unit comes with two hot-swap blowers for cooling redundancy.
The blower speeds vary depending on the ambient air temperature at the front of
the BladeCenter. If the ambient temperature is 72°F or below, the BladeCenter
blowers will run at 30% of their maximum rotational speed, increasing their speed
as required to control internal BladeCenter temperature. If the ambient temperature
is above 72°F, the blowers will run at 80% of their maximum rotational speed,
increasing their speed as required to control internal BladeCenter temperature. If a
blower fails, the remaining blower continues to cool the BladeCenter unit and blade
servers.
The blower speeds vary depending on the ambient air temperature at the front of
the BladeCenter. If the ambient temperature is 72°F or below, the BladeCenter
blowers will run at 30% of their maximum rotational speed, increasing their speed
as required to control internal BladeCenter temperature. If the ambient temperature
is above 72°F, the blowers will run at 80% of their maximum rotational speed,
increasing their speed as required to control internal BladeCenter temperature. If a
blower fails, the remaining blower continues to cool the BladeCenter unit and blade
servers.
Important: Replace a failed blower as soon as possible, to restore cooling
redundancy.
redundancy.
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BladeCenter E Type 8677 and 1881: Hardware Maintenance Manual and Troubleshooting Guide