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| Unix Backup And Recovery 1999, Podręczniki, 130 linux and unix ebooks, unix |
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[ Pobierz całość w formacie PDF ] Page iii Unix Backup and Recovery W. Curtis Preston Beijing • Cambridge • Farnham • Köln • Paris • Sebastopol • Taipei • Tokyo Page iv Disclaimer: This netLibrary eBook does not include data from the CD-ROM that was part of the original hard copy book. Unix Backup and Recovery by W. Curtis Preston Copyright (c) 1999 O'Reilly & Associates, Inc. All rights reserved. Printed in the United States of America. Published by O'Reilly & Associates, Inc., 101 Morris Street, Sebastopol, CA 95472. Editor: Gigi Estabrook Production Editor: Clairemarie Fisher O'Leary Printing History: November 1999: First Edition. Nutshell Handbook, the Nutshell Handbook logo, and the O'Reilly logo are registered trademarks of O'Reilly & Associates, Inc. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and O'Reilly & Associates, Inc. was aware of a trademark claim, the designations have been printed in caps or initial caps. The association between the image of an Indian gavial and the topic of Unix backup and recovery is a trademark of O'Reilly & Associates, Inc. While every precaution has been taken in the preparation of this book, the publisher assumes no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. This book is printed on acid-free paper with 85% recycled content, 15% post-consumer waste. O'Reilly & Associates is committed to using paper with the highest recycled content available consistent with high quality. ISBN: 1-56592-642-0 Page v This book is dedicated to my lovely wife Celynn, my beautiful daughters Nina and Marissa, and to God, for continuing to bless my life with gifts such as these. -W. Curtis Preston Page vii TABLE OF CONTENTS Preface xiii I. Introduction 1 1. Preparing for the Worst 3 My Dad Was Right 3 Developing a Disaster Recovery Plan 4 Step 1: Define (Un)acceptable Loss 5 Step 2: Back Up Everything 7 Step 3: Organize Everything 10 Step 4: Protect Against Disasters 13 Step 5: Document What You Have Done 15 Step 6: Test, Test, Test 16 Put It All Together 17 2. Backing It All Up 18 Don't Skip This Chapter! 18 Why Should You Read This Book? 19 How Serious Is Your Company About Backups? 22 You Can Find a Balance 25 Deciding What to Back Up 30 Deciding When to Back Up 38 Deciding How to Back Up 43 Storing Your Backups 52 Testing Your Backups 56 Monitoring Your Backups 58 Page viii Following Proper Development Procedures 59 Unrelated Miscellanea 60 Good Luck 65 II. Freely Available Filesystem Backup & Recovery Utilities 67 3. Native Backup & Recovery Utilities 69 An Overview 69 Backing Up with the dump Utility 73 Restoring with the restore Utility 91 Limitations of dump and restore 101 Features to Check For 102 Backing Up and Restoring with the cpio Utility 103 Backing Up and Restoring with the tar Utility 114 Backing Up and Restoring with the dd Utility 122 Comparing tar, cpio, and dump 127 How Do I Read This Volume? 129 4. Free Backup Utilities 141 The hostdump.sh Utility 141 The infback.sh, oraback.sh, and syback.sh Utilities 142 A Really Fast tar Utility: star 142 Recording Configuration Data: The SysAudit Utility 143 Displaying Host Information: The SysInfo Utility 144 Performing Remote Detections: The queso Utility 144 Mapping Your Network: The nmap Utility 145 AMANDA 146 III. Commercial Filesystem Backup & Recovery Utilities 185 5. Commercial Backup Utilities 187 What to Look For 188 Full Support of Your Platforms 189 Backup of Raw Partitions 191 Backup of Very Large Filesystems and Files 192 Simultaneous Backup of Many Clients to One Drive 192 Simultaneous Backup of One Client to Many Drives 196 Page ix Data Requiring Special Treatment 202 Storage Management Features 205 Reduction in Network Traffic 208 Support of a Standard or Custom Backup Format 216 Ease of Administration 219 Security 222 Ease of Recovery 223 Protection of the Backup Index 225 Robustness 227 Automation 227 Volume Verification 228 Cost 229 Vendor 230 Conclusions 231 6. High Availability 232 What Is High Availability? 232 HA Building Blocks 238 Commercial HA Solutions 243 The Impact of an HA Solution 245 IV. Bare-Metal Backup & Recovery Methods 247 7. SunOS/Solaris 249 What About Fire? 250 Homegrown Bare-Metal Recovery 251 Recovering a SunOS/Solaris System 256 8. Linux 270 How It Works 270 A Sample Bare-Metal Recovery 275 9. Compaq True-64 Unix 282 Compaq's btcreate Utility 283 Homegrown Bare-Metal Recovery 284 10. HP-UX 290 HP's make_recovery Utility 291 The copyutil Utility 295 Using dump and restore 299 Page x 11. IRIX 306 SGI's Backup and Restore Utilities 307 System Recovery with Backup Tape 310 Homegrown Bare-Metal Recovery 315 12. AIX 323 IBM's mksysb Utility 324 IBM's Sysback/6000 Utility 330 System Cloning 337 V. Database Backup & Recovery 339 13. Backing Up Databases 341 Can It Be Done? 342 Confusion: The Mysteries of Database Architecture 343 The Muck Stops Here: Databases in Plain English 344 What's the Big Deal? 345 Database Structure 346 An Overview of a Page Change 360 What Can Happen to an RDBMS? 361 Backing Up an RDBMS 363 Restoring an RDBMS 370 Documentation and Testing 374 Unique Database Requirements 375 14. Informix Backup & Recovery 376 Informix Architecture 377 Automating Informix Startup: The dbstart.informix.sh Script 387 Protect the Physical Log, Logical Log, and sysmaster 392 Which Backup Utility Should I Use? 400 Physical Backups Without a Storage Manager: ontape 403 [ Pobierz całość w formacie PDF ] |