Reliable, Managed Availability - IBM eserver i5 Handbook

Draft Document for Review October 18, 2004
Virtual Ethernet can provide a secure, high-performance bus interconnect
between Windows, Linux and OS/400 without an external LAN.
Flexible server deployment and testing features include the ability to store
multiple Windows server images on the iSeries (for example, different service
packs of applications), and then boot only the server required on an Integrated
xSeries Server. A single backup methodology for all Windows servers and
OS/400 also provides a robust disaster recover solution. Microsoft Cluster
Service supports dynamically switching virtual storage spaces (disks) between
Windows servers.
The Integrated xSeries Server features a 2.0 GHz Intel Xeon processor with a
512 KB L2 cache, a 400 MHz front side bus (FSB), an on-board 10/100 Mbps
Ethernet controller, and four USB ports.
The Integrated xSeries Adapter is a PCI adapter that connects xSeries servers to
the iSeries HSL bus, and provides the server virtual storage and Ethernet. The
Integrated xSeries Adapter is supported with a range of xSeries servers,
including the xSeries 235, 255, 360, and 440.
Refer to "1519-100 and 1519-200 Integrated xSeries Adapter for iSeries (direct
attach)" on page 303 for additional information about Integrated xSeries
Adapters for the iSeries.

Reliable, managed availability

The iSeries server has a reliable history of designing key functions into the
hardware and software. High availability is one reason to select a managed
availability approach. Other reasons include minimal disruptive backup solutions,
and the ability to nondisruptively install and pre-test new versions, releases, or
software fixes to make optimum use of all company and system resources.
Hallmarks of iSeries availability include redundant internal hardware features,
such as RAID-5 and mirroring. The robustness and stability of OS/400 extends
into its multiple, subsystem support (batch, interactive, multi-language, and
applications). The iSeries server offers managed availability to ensure that it is
ready to do business when you are.
iSeries managed availability software is also called
provides:
The ability to have one system act as a hot backup system to one or more
primary systems. The primary and secondary systems do not have to be the
same size or model.
A rapid switchover to the secondary machine in the event of an emergency.
iSeries architecture: Fundamental strength of the IBM ^ i5 and iSeries
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cross-system mirroring
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