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Method To Make Newly Licensed System Memory Available With Partition Manager Being Suspended In A Capacity On Demand Logical Partitioning (LPAR) System

IP.com Disclosure Number: IPCOM000020338D
Original Publication Date: 2003-Nov-13
Included in the Prior Art Database: 2003-Nov-13
Document File: 1 page(s) / 42K

Publishing Venue

IBM

Abstract

Disclosed is the method to make the newly licensed system memory available with Partition Manager suspended in a Capacity On Demand Logical Partitioning (LPAR) System

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  Method To Make Newly Licensed System Memory Available With Partition Manager Being Suspended In A Capacity On Demand Logical Partitioning (LPAR) System

If the system is Capacity Upgrade On Demand (CUoD) capable and is in Logical Partitioning (LPAR) mode, then this disclosure explains how the newly licensed system memory is made available when the Partition Manager is not active:

1. Customer activates more memory using one of the methods (Activate Immediate or Permanent Activation), using HMC.
2. HMC notifies Converged Service Processor (CSP) about the memory upgrade.
3. CSP sets up the NVRAM to indicate the amount of memory to be upgraded.
4. The operating system (OS) calls Event Scan in Runtime Abstraction Services (RTAS) every one minute. When Event Scan is called, it checks whether the Partition Manager is active or not. If not, then it checks the NVRAM for any CUoD memory activity is going on. If so, the Event Scan will increase the amount of licensed memory and notifies the CSP once it is done.

The same approach is used when the customer decides to deactivate the newly licensed memory.

Disclosed by International Business Machines Corporation

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