IBM p5 550 Technical Overview And Introduction

Also see for p5 550: Technical overview and introduction

Contents

48 p5-550 Technical Overview and Introduction3.1 Capacity on DemandThe p5-550 systems can be shipped with non-activated processor resources, which can beadded as they are needed. Processors can be brought online to meet increasing workloaddemands, without affecting system operations.The following sections outline the different methods available, namely the processor: Permanent Capacity Upgrade on Demand Reserve Capacity on Demand Dynamic processor sparing Trial Capacity on Demand for processors and memoryThe base 2-way 1.65 GHz POWER5 (FC 5237) processor card supports CUoD. It featurestwo processors, but zero active, and eight DDR1 Memory DIMM sockets. Processors areactivated in increments of one processor either permanently or for a given amount of time.Processor Upgrade On Demand and Dynamic Processor Sparing are supported by AIX 5LVersion 5.2 ML4 and AIX 5L Version 5.3. Dynamic Processor Sparing requires that the CPUguard attribute is set to enable.3.1.1 Processor Capacity Upgrade on Demand methodsThis section describe the different IBM Sserver Capacity Upgrade on Demand methodsavailable for the processors, at this time of writing.Permanent Capacity Upgrade on DemandCapacity Upgrade on Demand (CUoD) is a method where processors are shipped tocustomers installed in the p5-550 and later can be activated in increments of one processor.Additional options deliver the possibility to use temporarily processors resources installed inthe server.All processor cards are 2-ways, with 0-way active. In an initial order of the p5-550 system, atleast two processors must be activated by ordering the appropriate activation features.On/Off Capacity on DemandAfter an On/Off Processor Enablement feature is ordered and the associated enablementcode is entered into the system, the customer must report On/Off usage to IBM at leastmonthly. This information, used to compute the billing data, is then provided to the saleschannel. The sales channel will place an order for a quantity of On/Off Processor Day Billingfeatures.Reserve Capacity on DemandThe Reserve Capacity option activation is a reserve capacity for 30 processor-days of prepaidreserve. To establish processor capacity on the server, select a quantity of inactiveprocessors to be placed in the server's shared processor pool as reserve processors. Afterthe server recognizes that non-reserve processors (permanently activated processors)assigned or available or both to the uncapped partitions have been 100% used , use ofadditional processors will cause processor days (good for a 24-hour period) to be subtractedfrom the prepaid number of processor-days.