IBM pSeries 650, Installation Manual

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On Demand On/Off Features
On demand On/Off features allow you to use extra processor resources that are available on your system.
The On/Off features are ordered ahead of time so that the capacity is available on the system when it is
needed. After you are finished using the extra capacity, you can turn it off and save your time until the
resouce is needed again. An activation code lets you order the amount of usage time. Turning on and off
the processors is performed from the HMC interface.
For information about how to activate and deactivate On/Off features on your server, refer to “Activating
Process for Capacity Upgrade on Demand Features” on page 121, or refer to the IBM Hardware
Management Console for pSeries Installation and Operations Guide , order number SA38-0590, that was
delivered with your hardware management console.
Trial Capacity on Demand
The trial capacity on demand function enables CUoD features to be activated one time for a 30
consecutive day period. If your system was ordered with CUoD features and they have not yet been
activated, you can turn the features on for a one-time trial period. With the trial capability, you can gage
how much capacity you might need in the future, when you decide to permanently activate the resouces
you need.
For information about how to use the trial capacity on demand function, refer to “Activating Process for
Capacity Upgrade on Demand Features” on page 121, or refer to the IBM Hardware Management Console
for pSeries Installation and Operations Guide , order number SA38-0590, that was delivered with your
hardware management console.
Capacity Planning
If you are doing capacity planning for models with CUoD features, plan ahead for any potentially disruptive
actions that might inhibit your using fully the capacity of the system. Some actions you may want to take
prior to activating any CUoD features are as follows:
v
Perform any I/O updates, such as adding adapters necessary to increase system capacity
v
Perform memory upgrades (CUoD) or standard memory features
v
Prepare logical partitions
By planning ahead, you can accommodate the growth of existing workloads, as well as handle new
workloads without requiring a server outage. Each component of a server effects performance and overall
throughput of workloads. By planning ahead and taking into account the complete server configuration,
you can help ensure that you get the full benefit of CUoD activations.
Note: If you have questions about capacity-planning topics not covered here, contact your sales
representative for assistance.
Processor on Demand Ordering
Permanent CUoD capacity can be activated in either one of the following scenarios. The description of
each of the following scenarios highlights if and when it is necessary to send vital product data (VPD) to
IBM.
v New system order (new footprint): An order can contain a number of CUoD activation features. The
manufacturing facility fills orders directly at the plant of manufacture, before the server is delivered to
the customer.
v
Ordering activation features for an installed server: After you have determined that you want to
permanently activate some or all of your CUoD features, contact your business partner or sales
representative to place an order.
When the order record and the VPD are both available to the manufacturing facility, a processor on
demand activation code unique to your server is generated. The activation code is mailed to you and
posted at a public Web site for quick access:
http://www.ibm.com/servers/eserver/pseries/cuod/index.html
Chapter 5. Installing Options
119