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© Copyright IBM Corp. 2005. All rights reserved. xv
Preface
This IBM® Redbook describes the IBM TotalStorage® DS8000 series of storage servers, its
architecture, logical design, hardware design and components, advanced functions,
performance features, and specific characteristics. The information contained in this redbook
is useful for those who need a general understanding of this powerful new series of disk
enterprise storage servers, as well as for those looking for a more detailed understanding of
how the DS8000 series is designed and operates.
The DS8000 series is a follow-on product to the IBM TotalStorage Enterprise Storage
Server® with new functions related to storage virtualization and flexibility. This book
describes the virtualization hierarchy that now includes virtualization of a whole storage
subsystem. This is possible by utilizing IBM’s pSeries® POWER5™-based server technology
and its Virtualization Engine™ LPAR technology. This LPAR technology offers totally new
options to configure and manage storage.
In addition to the logical and physical description of the DS8000 series, the fundamentals of
the configuration process are also described in this redbook. This is useful information for
proper planning and configuration for installing the DS8000 series, as well as for the efficient
management of this powerful storage subsystem.
Characteristics of the DS8000 series described in this redbook also include the DS8000 copy
functions: FlashCopy®, Metro Mirror, Global Copy, Global Mirror and z/OS® Global Mirror.
The performance features, particularly the new switched FC-AL implementation of the
DS8000 series, are also explained, so that the user can better optimize the storage resources
of the computing center.
The team that wrote this redbook
This redbook was produced by a team of specialists from around the world working at the
Washington Systems Center in Gaithersburg, MD.
Cathy Warrick is a project leader and Certified IT Specialist in the IBM International
Technical Support Organization. She has over 25 years of experience in IBM with large
systems, open systems, and storage, including education on products internally and for the
field. Prior to joining the ITSO two years ago, she developed the Technical Leadership
education program for the IBM and IBM Business Partner’s technical field force and was the
program manager for the Storage Top Gun classes.
Olivier Alluis has worked in the IT field for nearly seven years. After starting his career in the
French Atomic Research Industry (CEA - Commissariat à l'Energie Atomique), he joined IBM
in 1998. He has been a Product Engineer for the IBM High End Systems, specializing in the
development of the IBM DWDM solution. Four years ago, he joined the SAN pre-sales
support team in the Product and Solution Support Center in Montpellier working in the
Advanced Technical Support organization for EMEA. He is now responsible for the Early
Shipment Programs for the Storage Disk systems in EMEA. Olivier’s areas of expertise
include: high-end storage solutions (IBM ESS), virtualization (SAN Volume Controller), SAN
and interconnected product solutions (CISCO, McDATA, CNT, Brocade, ADVA, NORTEL,
DWDM technology, CWDM technology). His areas of interest include storage remote copy on
long-distance connectivity for business continuance and disaster recovery solutions.