Microprocessors

^{IBM-AUSTRIA - PC-HW-Support 30 Aug 1999}

Microprocessors

Microprocessors

When you install an additional microprocessor, the Netfinity 5000 can operate as a symmetric multiprocessing (SMP) server.
With SMP, certain operating systems and application programs can distribute the processing load between microprocessors.
This enhances performance for database and point-of-sale applications, integrated manufacturing solutions, and other applications.

Installing Microprocessor Upgrades: The server comes with an Intel® Pentium II microprocessor.
This microprocessor incorporates MMX™ technology with built-in ECC level two (L2) cache. For the latest information about microprocessor upgrades available for the server, contact the IBM reseller, IBM marketing representative, or see http://www.pc.ibm.com/us/compat/ on the World Wide Web.
If you do upgrade the microprocessor, use the instructions that come with the upgrade along with the (below) instructions in 'Installing or Replacing a Microprocessor'.

If you install an additional microprocessor that is different from the currently installed microprocessor, the server operation might be unreliable.
To prevent this, use a microprocessor with the same internal and external clock speed, and the same cache size and voltage requirements as those of the currently installed microprocessor.
Microprocessor internal and external clock frequencies and cache size must be identical.
The voltage-regulator module (VRM) for the additional microprocessor plugs into a connector on the system board (see 'System Board Connectors' for the location of the VRM connector).
Because each microprocessor has specific power and voltage requirements, be sure to use the VRM that comes with the microprocessor.
NOTE: The voltage regulator function for the microprocessor that is shipped with the server is built into the system board.
If you select a setting for the frequency switch that is greater than the actual frequency of the microprocessor, you might damage the microprocessor.
The frequency switch settings are shown in (below) Table 5.

Installing or Replacing a Microprocessor

This section gives the procedure for installing microprocessors.
If you want to remove a microprocessor, reverse the order of the following steps.

Before you begin:

Read 'Safety Information'
Thoroughly review the documentation that comes with the microprocessor, so that you can determine whether you need to update the server BIOS.
The 'ServerGuide and Netfinity Manager Information' section of this Server Library includes IBM Update Connector, which keeps the BIOS and device drivers current. You can also obtain the latest level of BIOS for the server through the World Wide Web and the IBM Personal Computer Company Bulletin Board System (BBS). See the 'Getting Help Information' section of this Server Library for the appropriate World Wide Web addresses and bulletin board telephone numbers.
For a list of supported operating systems, see http://www.pc.ibm.com/compat/ on the World Wide Web.

NOTE:

If you have not already done so, go to http://www.pc.ibm.com/support/ on the World Wide Web and download the appropriate flash update program.
Review the applicable README files, and use this information to create a Flash Utility Diskette.
Perform the POST/BIOS (flash) update procedure.
The microprocessor in the server comes with an attached heat sink. The microprocessor plugs into the microprocessor socket on the system board and is stabilized with a plastic bracket attached to the system board.
If you replace the microprocessor with one that has a different speed, you must change the switch settings on the system board. To locate the switches, see 'System Board Connectors'. For information about the appropriate switch settings, see Table 11, or see the label inside the server cover.

If you select a setting for the frequency switch that is greater
than the actual frequency of the microprocessor, you might damage the microprocessor.

To install a microprocessor:

If you have not done so, remove the server cover. See 'Option Installation'.
If you are installing an additional microprocessor, remove the terminator card from the secondary microprocessor connector. Otherwise, go to step 3.
1. Spread apart the posts of the secondary microprocessor connector bracket until the top of the terminator card is past the restraining latches.
2. Lift the terminator card out of the connector.
  NOTE: When you install a second microprocessor, it becomes the startup (boot) microprocessor.
Carefully remove the microprocessor from the static-protective package.
If you are replacing a microprocessor, remove the existing microprocessor from its socket. Otherwise, go to step 5.
1. Locate the microprocessor socket on the system board. (See the illustration in 'System Board Illustration'.)
2. Place the index fingers on the small retainer tabs -1- on the top of the microprocessor. Push in toward the microprocessor until the tabs release.
  NOTE: The illustrations in this section might differ slightly from the hardware.
3. Lift -2- the microprocessor out of the connector.
4. Store the old microprocessor in a static-protective package.
Touch the static-protective package that contains the new microprocessor to any unpainted metal surface in the server, then, remove the new microprocessor.
Press inward on the retainer tabs until they click into place.
NOTE: For the location of the retainer tabs, see the illustration in step 4b.
Align the new microprocessor with the microprocessor connector on the system board and slide it into the guides. Press the microprocessor down until it snaps into place and is fully seated in the connector.
Pull outward on the retainer tabs.
If you replaced the microprocessor with one that has a different speed, you must change the switch settings on the system board. To locate the switches, see 'System Board Connectors'.
NOTE: If the processor in the system does not react to switch changes, it is not an error.
Table 5. Switch Settings for Microprocessor Speed
Because you installed a new microprocessor in the server, you must reconfigure the server. Follow the procedure described in 'Configuration/Setup Utility Usage'.
Because you installed a new microprocessor in the server, you might need to make changes to the operating system.
- If the operating system does not support SMP, install one of the SMP operating systems that the server supports. See http://www.pc.ibm.com/netfinity/ on the World Wide Web.
- If the operating system does support SMP, refer to the operating-system documentation. You might need to make changes so that the operating system recognizes the new microprocessor.
- On some operating systems, if you install a second microprocessor it might be necessary to reinstall the operating system. See the documentation that comes with the new microprocessor.
If you want to install or remove any other options, do so now. Otherwise, go to 'Completing the Installation'.

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