Presented By,

M.Bala Murugan(DCT)

V.Gokula kannan(DCT)

BASICS OF ISERIES LOGICAL PARTITIONING

Basics of iSeries Logical Partitioning

What is it?LPAR = Logical (and Physical) Partitioning

Logical Partitioning :

The allocation of system resources to create logically separate systems within the same physical footprint.

Iseries logical partitioning :

Based on the “Hypervisor“, system resources are allocated to create logically separate systems within the same physical footprint.

Basics of iSeries Logical Partitioning

Basics of iSeries Logical Partitioning

Terminology:

• Primary Partition

The partition which provides certain general functions on which all partitions are dependent.

• Secondary Partition

Any partition that is not the primary partition.

• Partition Identifier

A numeric value which represents a particular partition that can be retrieved through an unblocked MI instruction.

• Hypervisor

A kernel which enables partitioning. Consists of a new layer of code (PLIC) along with parts of SLIC from the primary partition.

Basics of iSeries Logical Partitioning

The changes as of 4R4

Pre V4R4

Hardware

SLIC

OS400

LPPs

Hardware

SLIC

LPPs

OS400

PLIC

Partition Licensed Internal CodeNew layer of code

Basics of iSeries Logical Partitioning

Each logical partition operates as a complete systemwith its own:

SLIC and OS/400 Processors, main storage, and interactive

performance Load source disk and console 64 bit address space (single level storage) ASPs and memory pools Problem logs, LIC logs, PAL entries Data (libraries, objects, file systems Performance characteristics Language feature code(s)

Partition Characteristics

Basics of iSeries Logical Partitioning

Version 4.5 and aboveMinimum processor requirements

0.10 per partition - if applicable 0.25 Primary - if applicable1 per partition - if not applicable

Minimum memory requirements64MB (Linux) 128 secondary (OS)512MB Better for primary

I/0 requirementsLoad source disk IOP and diskConsole IOP and consoleAvailable Alt IPL device

Minimum Requirements

Basics of iSeries Logical Partitioning

Primary Secondary SecondarySystem x System y System z

Internal communications

Virtual OptiConnect, LAN HSL Opticonnect

Virtual OptiConnect is an any-to-any protocol. Each partition needs LPPVirtual LAN is 1GB ethernet protocol, no soft/hardware necessaryHSL Opticonnect allows partitions to use HSL for system-to-system or partition-to-system-communication

Basics of iSeries Logical Partitioning

Server Consolidation

Mixed production and test environments

Departmental Systems

Release Migration

Diverse Workloads

Integrated Cluster

FEATURES

Basics of iSeries Logical Partitioning

Uni-processors now avaiable for LPAR

270 820

THANK

YOU