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Appendix F. BladeCenter
®
power module upgrade guidelines
This Technical Update contains information that will help you determine whether to upgrade the power
modules in your IBM BladeCenter
®
Type 8677 unit when installing IBM BladeCenter blade servers or
options.
Note: These guidelines apply to an IBM BladeCenter Type 8677 unit. These guidelines do not apply to an
IBM BladeCenter T Type 8720 or 8730 unit.
The latest version of the BladeCenter management module firmware includes new features to assist you in
managing the power load of the chassis. The new features (Fuel Gauge and Power Management Policy)
provide additional indication on whether the power supply in your system configuration supports full
redundancy and extend the capability of the 2000 watt (W) power supplies. If you have not already done so,
to take advantage of these new features, download and install the latest management module firmware from
http://www.ibm.com/support/.
Attention: Power modules must always be present and operating in power bays 1 and 2. When any blade
server or option is in blade bays 7 through 14, power modules must be present and operating in all four
power-module bays.
If a power module fails or an ac power failure occurs, BladeCenter units configured for redundant power
operation, as described in this document, will operate in a nonredundant mode, and the blower modules will
run at full speed. You must replace the failing power module or restore ac power as soon as possible to regain
redundant power operation and to reset the blower modules to their normal operating speed.
As of the date of this printing, four BladeCenter power-module options are supported:
• IBM BladeCenter 1200 W Power Supply Module (part number 48P7052)
• IBM BladeCenter 1200 W to 1400 W Power Supply Upgrade Kit (part number 90P0197)
• IBM BladeCenter 1800 W Power Supply Module (part number 13N0570)
• IBM BladeCenter 2000 W Power Supply Module (part number 26K4816)
Go to http://www.ibm.com/servers/eserver/serverproven/compat/us/ for information about these
options.
The most recent version of this document and all other BladeCenter documentation is at
http://www.ibm.com/support/.