IBM Passport Advantage Software Subcapacity License Counting Scenarios

® IBM Passport Advantage Software Sub-capacity License Counting Scenarios - System p and System i NOTE: Review this presentation in conjunction with the most current Sub-capacity licensing overview presentation

IBM Passport Advantage Software Sub-capacity Licensing Requirements Summary Customers must agree to the terms of the sub-capacity attachment 4 4 4 Customers must use eligible IBM programs with sub-capacity part numbers Customers must use eligible virtualization technology Customers must use eligible processor technology Install IBM license metric tool when it becomes available (mid 2008) – Identify processor type and number of processor cores – Identify IBM software deployed on servers – Calculate PVUs required based on high water mark processor capacity available Current list of eligible programs and supported virtualization and processor technologies available on Passport Advantage Please note: Customers are responsible for the installation of the upcoming IBM license metric tool and for the server it runs on. While required use of the current IBM license management tool is temporarily suspended, customers remain responsible for acquiring sufficient quantities of license authorizations to comply with the subcapacity offering terms. 2 © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing Index of Items § Scenarios – Dedicated LPAR (page 4) – Dynamic LPAR (page 5) – Single Shared Pool with Capped & Uncapped Partitions (pages 6 -7) – Micro-Partitioning – Fractional Processor Cores (page 8) – List of Eligible Virtualization Technologies (page 10) – List of Eligible Processor Technologies (page 11) § Definitions & Settings – Definitions (pages 10 -11) – Partition Settings (pages 12 -13) – Additional Information (page 14) 3 © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing License Counting – Dedicated LPAR § § License entitlements required are based on processor core capacity available to the software in the partition For the example below: – Web. Sphere Application Server (WAS): PVUs for 10 cores need to be licensed – DB 2 Enterprise Server Edition (DB 2): PVUs for 4 cores need to be licensed Partitions i 5/OS AIX WAS DB 2 1 2 3 4 5 6 7 8 9 10 Linux DB 2 11 12 Server with 12 Processor cores 4 © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing License Counting – Dynamic LPAR § System i and System p provide the capability to dynamically move processor core resources between partitions § Customer must acquire PVUs for the highest* number of processor core capacity available to the IBM software § Example: Customer’s basic configuration: i 5/OS AIX WAS DB 2 1 2 3 4 Changed during batch peak: 5 6 7 8 9 DB 2 10 i 5/OS AIX WAS 11 2 3 Changed for simulation work: 4 5 6 7 8 9 i 5/OS AIX WAS DB 2 10 11 2 3 4 5 6 7 8 12 Linux DB 2 1 § Linux DB 2 9 10 11 12 License PVUs for: 10 WAS cores (consistent throughout) + 6 DB 2 cores (from simulation peak) * greater of a) what the partition starts with or b) the result of a DLPAR operation 5 © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing License Counting – Single Shared Pool with Capped and Uncapped Partitions Server with 12 processor cores A B C i 5/OS AIX Linux 1 2 3 DB 2 cores to license: • 4 from EC for capped partition D WAS cores to license: • 7 from VP for uncapped partition E 6 D E Capped Uncapped AIX i 5/OS DB 2 WAS VP = 6 VP = 7 EC = 4. 00 EC = 5. 00 Shared Pool (9 processor cores) 4 5 6 7 8 9 10 11 12 License Rules: § For Capped Partitions: The highest* level of Entitled Capacity (EC); § EC was formerly referred to as Processing Unit (Pr. U). § For Uncapped Partitions: The highest* number of VP (Virtual Processors) § Shared Pool: the lower of the sum of each partition for a product or the processor capacity of the shared pool * The greater of what the partition starts with or the result of a DLPAR operation © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing License Counting – Single Shared Pool with Capped and Uncapped Partitions Server with 12 processor cores DB 2 cores to license: D E F G H Capped Uncapped i 5/OS AIX Linux i 5/OS AIX WAS WAS 1 from dedicated partition B 4 from EC for capped partitions E and F 3 from VP for uncapped partition H 8 total A B C i 5/OS AIX Linux DB 2 VP = 1 VP = 4 VP = 7 VP = 3 EC= 1. 00 EC = 2. 00 EC = 3. 00 EC = 1. 00 Shared Pool (9 processor cores) DB 2 1 2 3 WAS cores to license: 2 from EC for capped partition F 10 from VP for uncapped partitions G and H 12 total reduced to 9* * maximum cores available in shared pool 7 DB 2 4 5 6 7 8 9 10 11 12 License Rules: § For Capped Partitions: The highest* level of Entitled Capacity (EC); § EC was formerly referred to as Processing Unit (Pr. U). § For Uncapped Partitions: The highest* number of VP (Virtual Processors) § Shared Pool: the lower of the sum of each partition for a product or the processor capacity of the shared pool * The greater of what the partition starts with or the result of a DLPAR operation © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing License Counting - Micro-Partitioning (Fractional cores) with Single Shared Pool, Capped & Uncapped Partitions Server with 12 processor cores DB 2 cores to license: 1. 0 from dedicated partition B 2. 9 from EC for capped partitions E and F 3. 0 from VP for uncapped partition H 6. 9 rounded up to 7. 0 total cores to license A B C i 5/OS AIX Linux D E F G H Capped Uncapped i 5/OS AIX Linux i 5/OS AIX WAS WAS DB 2 VP = 3 VP = 4 VP = 7 VP = 3 EC = 2. 10 EC = 1. 60 EC = 1. 30 EC = 3. 00 EC = 1. 00 Shared Pool (9 processor cores) DB 2 1 2 3 DB 2 4 5 6 7 8 9 10 11 12 License Rules: WAS cores to license: 1. 3 from EC for capped partition F 10 for uncapped partitions G and H 11. 3 total, rounded up to 12 Reduced to 9, maximum cores available in shared pool 8 § For Capped Partitions: The highest* level of Entitled Capacity (EC) § § For Uncapped Partitions: The highest* number of VP (Virtual Processor Cores) Shared Pool Capping Rule: the lower of the sum of each partition for a product or the processor core capacity of the shared pool Aggregate fractional processor cores, apply shared pool capping rules, and round up at the server level to the next whole processor core. • § EC was formerly referred to as Pr. U (Processing Units). * The greater of what the partition starts with or the result of a DLPAR operation © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing Backup 9 © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing Definitions § Dedicated partition: – Processors are always allocated in whole increments (no micro-partitioning) – Resources are only moved between partitions “explicitly” (e. g. by an operator or a scheduled job) § Entitled Capacity (EC) – The actual processor core capacity available to a partition. May be changed via DLPAR operation after startup. It is a unit of measure for shared processing capacity. One EC accomplishes approximately the same work as one dedicated processor core. Formerly referred to as Pr. U. § Virtual Processor (VP) – Defines the maximum number of physical processor cores that the system can access simultaneously to provide the processing capacity of a shared processors partition – The processing capacity of a partition is evenly distributed across the virtual processors § Online VP – The actual VPs available to a partition. May be changed via DLPAR operation after startup. § Shared pool: – Pool of processor cores shared by capped and uncapped partitions – System automatically moves processor core resources between partitions as needed – Processor cores are allocated in increments of 0. 01 processor core 10 © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing Definitions § Shared processors Partition (Also known as Micro-partition LPAR ) – – – A logical partition that utilizes processor resources from the shared processing pool using Micro-Partitioning technology are referred to as shared processor partitions. The processing unit assigned to a shared processors partition is known as processor entitlement, or entitled capacity. A shared processors partition can be defined as “capped” or “uncapped” The POWER Hypervisor automatically moves processor core resources among partitions based on each partition’s entitled capacity, “capped or uncapped” attributes, and its load § Capped partition: – This type of shared processor partition can never be allocated processing capacity that is more than its Entitled Capacity § Uncapped partition: – This type of shared processor partition can be allocated processing capacity that can exceed its Entitled Capacity. It can access the unused processor cores in the shared pool, when available, up to the Online VP value (VP). § Micro-partitioning: – The ability to divide a physical processor’s computing power into fractions of a processing unit and share them among – – § 11 multiple logical partitions. To obtain the number of license entitlements the customer should acquire, add up the total number of cores per server then round up to the next whole number of processor cores (aggregate and round up, by server) Processor units are allocated in increments of 0. 01 processor core Maximum license requirements – Customer does not have to obtain more licenses for a product than the number of processor cores on the machine (e. g. maximum DB 2 licenses on a 12 core machine is 12) – Customer does not have to obtain more “shared pool” licenses for a product than the number of processor cores assigned to the shared pool (e. g. maximum of WAS licenses for a shared pool with 7 processor cores is 7). Note: This limit does not affect the additional licenses that might be required for dedicated partitions © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing Partition Settings § Processor Capacity setting: – Determines the amount of ECs assigned to the partition. Customers specify the minimum, desired, and maximum values • • • § Virtual Processor setting: – Determines the amount of VPs assigned to the partition. Customers specify the minimum, desired, and maximum values. • • • 12 Minimum: Amount of EC required to start up the partition Desired: The desired amount of EC for the partition to start with Maximum: Used as an upper limit for future Dynamic LPAR (DLPAR) operations that customers execute to increase entitled capacity. Minimum: Amount of VPs required to start up the partition. Desired: The desired amount of VPs for the partition to start with Maximum: Used as an upper limit for future dynamic LPAR (DLPAR) operations that customers execute to increase the number of virtual processors. © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing Capped & Uncapped Partition License Counting Details § Capped partition: – This type of shared processor partition can never be allocated processing capacity that is more than its Entitled Capacity. – Entitled Capacity: The actual processor core capacity available to a partition. May be changed via DLPAR operation after startup. – Virtual Processor (VP): Defines the number of physical processor cores that the system can access to provide the processing capacity of a shared processors partition. – License the highest* amount of Entitled Capacity. • A partition may start up with a certain Entitled Capacity but through a DLPAR operation, this Entitled Capacity may be increased or decreased. Hence, the license must cover the greater of the Entitled Capacity the partition starts with or the result of a DLPAR operation § Uncapped partition: – This type of shared processor partition can be allocated processing capacity that can exceed its Entitled Capacity. – The Entitled Capacity defines the basic or ‘start up’ processor capacity – The VP defines the number of physical processor cores that the partition can access to grab idle processor capacity available. It can access the unused processor cores in the shared pool, when available, up to the Online VP value (VP). – Online VPs: The actual VPs available to a partition. May be changed via DLPAR operation after startup. – License VP equal to the highest* amount of Online VPs. • A partition may start up with a certain Online VP but through a DLPAR operation, this Online VP may be increased or decreased. Hence, the license must cover the greater of the Online VPs a partition starts with or the result of a DLPAR operation. * greater of a) what the partition starts with or b) the result of a DLPAR operation 13 © 2007 IBM Corporation

IBM Passport Advantage Software – Sub-capacity Licensing Additional Information • More information about Passport Advantage Subcapacity Licensing can be found on Passport Advantage 14 © 2007 IBM Corporation

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