Availability Guide for Change Management

Making System Software and Hardware Changes

Online

Availability Guide for Change Management–125506

3-3

Online Changes That Require Tandem Assistance

With the proper planning, your Tandem CE or SE may be able to help you perform the

following hardware changes online:

•

Adding, upgrading, and moving I/O expansion cabinets

•

Adding, upgrading, and moving system cabinets

•

Adding, upgrading, and moving external cabinets

If you would like more information on performing these types of hardware changes,

contact your Tandem representative.

Adding and Upgrading Processors Online

Adding or upgrading a new processor online involves the following steps:

1. Ensuring that the operating system image loaded on your NonStop system includes

the new processor

2. Physically installing the new processor and any related hardware

Ensuring That the Processor Is in the OSIMAGE

Before you can physically add a new processor online, the processor must be included in

the operating system image (OSIMAGE) currently running on your NonStop system.

If the processor is not included in the OSIMAGE loaded on your NonStop system, the

processor cannot be added online.

Installing the Processor and Any Related Hardware

Adding or upgrading a processor requires physical installation of a processor board and,

in some situations and for certain NonStop systems, requires replacement of memory

boards as well as other hardware installation tasks. Table 3-1 on page 3-8 lists the

manuals that describe the hardware installation procedures for adding a processor.

Considerations for Adding and Upgrading Processors

The following list describes considerations and limitations you should be aware of when

adding or upgrading processors online:

•

You cannot add a processor online if the cabinet that will contain the processor also

needs to be added to the system. Your Tandem SE or CE may be able to help you

add a system cabinet online.

•

You cannot upgrade your system from complex instruction set computing (CISC)

processors to reduced instruction set computing (RISC) processors online. It is

necessary to build a new operating system image when upgrading to RISC

processors.

Note. System components that are installed in multichannel (MC-32) I/O cabinets on Himalaya

servers must be removed and replaced only by system engineers trained by Tandem.