i5/OS and OS/400 (5722-SS1): Architecture 541
Draft Document for Review October 18, 2004 5486OpS.fm
Compression is limited to user ASPs only. Most data compresses at a 20% to
40% reduction. The compression reduction and subsequent impact on DASD
performance depends on the attributes of the data.
Hierarchical Storage Management (HSM)
i5/OS and OS/400 include HSM APIs used by BRMS for iSeries (5722-BR1)
to provide HSM functions. Use these APIs to develop custom HSM
applications.
Concurrent maintenance
Concurrent maintenance can be done for I/O cards, power, and other
components contained in expansion towers. With concurrence maintenance,
you can power off an expansion tower and add, remove, replace, upgrade,
move, or swap a card or other component without stopping or powering off
your system. Concurrent maintenance of some components are feature or
configuration dependent.
Select models of 270, 250, 520, 550 , 570, 595, 800, 810, 820, 825, 830, 840,
870, and 890 hardware also support concurrent maintenance. This allows the
operator to identify and power off IOPs and associated IOA card slots so
concurrent maintenance of the PCI cards can be performed.
Logical partitions
Logical partitioning enhances the role of the iSeries as a consolidated server.
With LPAR, companies have both the power and flexibility to address multiple
system requirements in a single machine to achieve server consolidation,
business unit consolidation, a mix of production and test environments, and
integrated clusters.
LPARs are ideal for companies that want to run varied workloads in a single
iSeries system. They allow the CPW performance of an iSeries system to be
flexibly allocated between partitions. Licenses can be managed across partitions.
Interconnected for application enhancement
Integrated
xSeries
Server
Lotus
Domino
e-business
OS/400 PASE -
UNIX
Runtime
iSeries
Business
Applications
LINUX
Application Porting
Consolidation/ASP
Business
Intelligence
iSeries
Traditional
Applications
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