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© Copyright IBM Corp. 2004. All rights reserved. xvii
Preface
This IBM Redbook describes the IBM TotalStorage® DS6000 storage server series, its
architecture, its 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 disk subsystem, as
well as for those looking for a more detailed understanding of how the DS6000 series is
designed and operates.
The DS6000 series is a follow-on product to the IBM TotalStorage Enterprise Storage
Server® with new functions related to storage virtualization and flexibility.
The DS6000 series is a storage product targeted for the midrange market, but it has all the
functions and availability features that normally can be found only in high end storage
systems. In a very small enclosure, which fits in a standard 19-inch rack, the DS6000 series
offers capacity, reliability functions, and performance similar to those of an ESS 800 or
comparable high-end storage systems.
For example, zSeries® customers now also have the option to buy a midrange priced storage
subsystem for their environment without giving up the functionality of an ESS.
In addition to the logical and physical description of the DS6000 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 DS6000 series, as well as for the efficient
management of this powerful storage subsystem.
Characteristics of the DS6000 series described in this redbook also include the DS6000 copy
functions: FlashCopy®, Metro Mirror, Global Copy, and Global Mirror. The performance
features, particularly the switched FC-AL implementation of the DS6000 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 7 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,