®
SG24-6863-00 ISBN 0738427322
INTERNATIONAL
TECHNICAL
SUPPORT
ORGANIZATION
BUILDING TECHNICAL
INFORMATION BASED ON
PRACTICAL EXPERIENCE
IBM Redbooks are developed
by the IBM International
Technical Support
Organization. Experts from
IBM, Customers and Partners
from around the world create
timely technical information
based on realistic scenarios.
Specific recommendations
are provided to help you
implement IT solutions more
effectively in your
environment.
For more information:
ibm.com/redbooks
IBM zSeries 990
Technical Introduction
System overview
Hardware description
Frequently asked
questions
The IBM ^ zSeries z990 provides major extensions to
existing zSeries architecture and capabilities. The concepts of
books and channel subsystems are added to the architecture,
and the maximum number of LPARs is increased. These
architectural extensions provide the base for much larger zSeries
machines. This IBM Redbook provides an overview of these
changes, and goes into more detail in selected areas.
By removing memory, processor, and channel constraints, z990
can be used for major server consolidation activities. More
granular options for nondisruptive maintenance, growth, and
alterations provide better 7 x 24 x 365 operation. In general, no
changes are needed for existing applications—allowing
immediate growth into z990.
Readers are assumed to have a general understanding of existing
S/390 and zSeries hardware. Terms, acronyms, abbreviations,
and concepts associated with existing systems are used without
further introduction.
Back cover

Get IBM eServer zSeries 990 Technical Introduction now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.