YOGGIE YOGGIE MANAGEMENT SERVER Technical Information download pdf (Page 458)

440 Logical Partitions on System i5

7. This completes the HMC code installation.

8. To verify the new HMC software level, you should refer to section 14.1.1, “How to

determine the HMC installed software level” on page 423

14.2 Licensed internal code updates

This section looks at the various methods used to manage and update an i5 managed

systems firmware.

14.2.1 Firmware overview

Firmware refers to the underlying software running on an i5 system independently from any

type of operating system (i5/OS,Linux or AIX). The firmware is physically located on the

Service Processor hardware (similar to a processor card) on the i5 hardware.

The system firmware consists of the following main components:

򐂰 Service Processor

򐂰 Converged Power PC® Hypervisor (PHYP)

򐂰 SPCN/Power subsystem

򐂰 PFW (partition firmware Linux/AIX)

Depending on your system model and service environment, you can download, install, and

manage your server firmware updates using different methods (policies), such as the HMC

(out-of-band) or by using an i5/OS service partition (in-band).

The default firmware update policy for a partitioned system is via the HMC. Both types of

updates will be discussed in this section.

The SP maintains two copies of the server firmware. One is held in the t-side repository

(temporary) and the other in the p-side repository (permanent). The idea being that new

firmware updates can be applied to the t-side first and be tested before they are permanently

applied. When you install server firmware updates on the t-side, the existing contents of the

t-side are permanently installed on the p-side first.

If you decide that you do not want to keep the new level of server firmware, you can remove

the current level of firmware. When you remove the current level of firmware, you copy the

firmware level that is currently installed on the p-side from the p-side to the t-side.

We recommend that under normal operations the managed system runs on the t-side version

of the system firmware. This concept of t-side/p-side is similar to the i5/OS system licensed

internal code (SLIC), which has an a-side and b-side.

Important: The server firmware can also be referred to as Licensed Internal Code. It is

important to note that this is not the same as the Licensed Internal Code that resides in an

i5/OS partition. OS/400 and i5/OS messages refer to the server firmware code as the

Hypervisor.

Attention: 59x and 57x systems with redundant SPs can only use the HMC (out-of-band)

to update the system firmware.

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YOGGIE YOGGIE MANAGEMENT SERVER Technical Information Page 458