Capacity On Demand Overview; What's New In Capacity On Demand; Section 4.1, "Capacity On Demand Overview; Section 4.2, "What's New In Capacity On Demand - IBM p5 590 System Handbook

4.1 Capacity on Demand overview

IT budgets no longer allow for an infrastructure that can accommodate
occasional peaks in demand but whose resources otherwise lie idle. With IBM
CoD, you can get the processing or memory resources you need, when you need
them, on demand. Because costs vary with usage, CoD can provide a highly
cost-efficient method of handling the usage peaks and valleys that occur in many
businesses. This model can allow companies to quickly scale their IT
infrastructures to meet dynamic application requirements without purchasing
additional servers or I/O storage devices.
Through unique CoD offerings, IBM Sserver products can offer either
permanent or temporary increases in processor and memory capacity. CoD is
available in four activation configurations, each with specific pricing and
availability terms. The four types of CoD activation configurations are discussed
within this chapter, from a functional standpoint. Contractual and pricing issues
are outside the scope of this document and should be discussed with either your
IBM Global Financing Representative, IBM Business Partner, or IBM Sales
Representative.
Capacity on Demand is supported by the following operating systems:
AIX 5L Version 5.2 and Version 5.3
i5/OS V5R3, or later
SUSE LINUX Enterprise Server 9 for POWER, or later
Red Hat Enterprise Linux AS 3 for POWER (update 4), or later

4.2 What's new in Capacity on Demand?

The p5-590 and p5-595 Capacity on Demand (CoD) systems can be configured
with inactive processor and/or memory resources that can be enabled
dynamically and non-disruptively to the system. The CoD offering provides
flexibility and improved granularity in processor and memory upgrades and is a
useful configuration option to support future growth requirements. CoD also
eliminates the need to schedule downtime to install additional resources at a
given point in time. Throughout this chapter the term
processor and memory resources intended for use in CoD configurations.
Dynamic processor and memory resource activation was introduced into the
pSeries product line as the
was first available on the pSeries 670 and pSeries 690 models. CUoD was
offered in three types of activation formats. Since the initial pSeries release of
CUoD, the p5-590 and p5-595 have enhanced previously existing CUoD
IBM Eserver p5 590 and 595 System Handbook
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Capacity Upgrade on Demand
capacity
is used to refer to
(CUoD) offering and