Planning for IBM eServer i5 Data Protection with Auxiliary Write Cache Solutions

An IBM Redpaper publication

Published 11 August 2005

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IBM Form #: REDP-4003-00
(52 pages)

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Authors: Dale Barrick, Susan Powers


Availability of data is critical in today's competitive business environment. Two auxiliary write cache features were announced in April 2005 for IBM eServer iSeries systems that enhance data integrity and continuity by providing two complete non-volatile copies of write cache data.

This IBM Redpaper was written to help the customer plan for and implement the auxiliary write cache IOA. Planning and implementation considerations are described and examples are provided to help you identify a single point of failure. Recovery is also discussed.

This Redpaper can help you understand what the auxiliary write cache feature is and what it does. Most importantly, this Redpaper guides you in planning for implementing auxiliary write cache on your IBM eServer iSeries system.

Table of contents

Chapter 1. Data protection solutions and your business
Chapter 2. WhatÕs new in disk storage data protection solutions
Chapter 3. Planning for the auxiliary write cache IOA
Appendix A. Pre-installation checklist
Appendix B. IOA card movement scenario and worksheet
Appendix C. What RAID set is my disk drive assigned to?

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