Logical Partitioning (Lpar) - IBM i series Handbook

iSeries Architecture: Fundamental Strength of the iSeries
Enhancements for the new Integrated xSeries Server include support for up to 32 servers on
selected iSeries models. See "iSeries Integration with Windows Server (Base 5722-SS1 as
5722-WSV)" on page 502.
Benefits of Server Consolidation on the iSeries Server
Server consolidation on the iSeries allows you to:
• Consolidate PC server hardware and operations so you can run up to 32 Windows NT
servers in a single server.
• Increase business recovery protection with high-speed backup of the combined iSeries
server and Windows NT systems.
• Improve server uptime and error recovery using highly reliable iSeries disk drives with
RAID-5 and mirroring options. Use a spare Integrated xSeries Server to replace a
failed server without reloading Windows NT.
• Maximize I/O investments by balancing iSeries servers and Windows NT disk
resources from a single pool. Switch user data disks between servers. Share the
iSeries tape and CD-ROM drives.

Logical Partitioning (LPAR)

Logical Partitioning enhances the role of the iSeries as a consolidated server. LPAR is of
value to customers who need server consolidation, business unit consolidation, mixed
production, and a test environment, as well as integrated clusters. With LPAR, companies
have both the power and flexibility to address multiple system requirements in a single
machine.
LPAR lets you run multiple independent OS/400 instances or partitions (each with its own
processors, memory, and disks) in an n-way symmetric multiprocessing AS/400e 6xx, Sxx, or
7xx and uni or n-way on 270 and 8xx models. Address multiple system requirements in a
single machine to achieve server consolidation, business unit consolidation, mixed
production/test environments, and integrated clusters.
Partitions have different system names and may have a different primary or secondary
national language, or they may operate using different time zones. Each partition's system
values can be set independently. This flexibility is ideal for banks and other multinational
companies to centralize operations in a single location, yet retain the national characteristics
of each system. Logical partitions are ideal for companies to run mixed interactive and server
workloads on a single iSeries. Logical partitions allow the interactive performance of an
iSeries to be flexibly allocated between partitions.
22
iSeries Handbook