Using On/Off Capacity On Demand - IBM p5 590 System Handbook

performance. A complex algorithm in the system firmware, based on factors such
as memory groups, available inactive processors, and possible processor failure
or deallocation situations, determines which processor will be activated.
Questions regarding either ordering or activation of inactive CUoD processors or
memory, should be directed to your regular sales contact.

4.7.2 Using On/Off Capacity On Demand

On/Off Capacity on Demand
that allows for the dynamic addition and removal of processor and memory
capacity to Sserver p5 systems on a temporary basis. The ability to temporarily
add capacity helps businesses cope with both predictable and unpredictable
surges in transaction volume with the aid of temporary increases in capacity.
These resources can be activated and deactivated quickly and efficiently as
organizational demands dictate. In this temporary capacity model, the system
owner only pays for the resources they have used, as capacity usage is
monitored. This option provides a highly cost-effective strategy for handling
seasonal or period-end fluctuations in activity and can enable you to deploy pilot
applications without investing in new hardware.
On/Off CoD has two distinct phases: enablement and activation. Once a client
decides to use On/Off CoD and meets the registration requirements, an
enablement code is ordered and will be supplied just like an activation code.
When the administrator enters the enablement code, they now have the ability to
turn processors and memory on and off as desired, in increments of one
processor or 1 GB of memory for as little as a single day of usage.
The system monitors the amount and duration of the activations and generates a
usage report which must be sent to IBM monthly. Billing for the activations is then
based on the usage report on a quarterly basis. The processor and memory
resources are paid for only after they are used, thereby allowing for a flexible,
"pay as you go" plan.
Clients who want to implement On/Off CoD features must sign an On/Off CoD
contract. Additional information regarding activation of temporary On/Off
resources is addressed in 4.6, "Capacity on Demand activation procedure" on
page 91.
On/Off Capacity on Demand enablement procedure
On/Off CoD provides an innovative and flexible temporary processor and
memory activation capability for planned or predictable peek processing
requirements for p5-590 and p5-595 servers. It is important to note that On/Off
CoD capacity must first be enabled before it can be activated and used. When an
order is placed for an On/Off CoD enablement feature, the client receives an
IBM Eserver p5 590 and 595 System Handbook
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(On/Off CoD) is a post-pay, self-managed offering