Backup & Recovery: Inexpensive Backup Solutions for Open Systems
W. Curtis Preston
Language: English
Pages: 768
ISBN: 0596102461
Format: PDF / Kindle (mobi) / ePub
Packed with practical, freely available backup and recovery solutions for Unix, Linux, Windows, and Mac OS X systems -- as well as various databases -- this new guide is a complete overhaul of Unix Backup & Recovery by the same author, now revised and expanded with over 75% new material.
Backup & Recovery starts with a complete overview of backup philosophy and design, including the basic backup utilities of tar, dump, cpio, ntbackup, ditto, and rsync. It then explains several open source backup products that automate backups using those utilities, including AMANDA, Bacula, BackupPC, rdiff-backup, and rsnapshot. Backup & Recovery then explains how to perform bare metal recovery of AIX, HP-UX, Linux, Mac OS, Solaris, VMWare, & Windows systems using freely-available utilities. The book also provides overviews of the current state of the commercial backup software and hardware market, including overviews of CDP, Data De-duplication, D2D2T, and VTL technology. Finally, it covers how to automate the backups of DB2, Exchange, MySQL, Oracle, PostgreSQL, SQL-Server, and Sybase databases - without purchasing a commercial backup product to do so.
For environments of all sizes and budgets, this unique book shows you how to ensure data protection without resorting to expensive commercial solutions. You will soon learn to:
- Automate the backup of popular databases without a commercial utility
- Perform bare metal recovery of any popular open systems platform, including your PC or laptop
- Utilize valuable but often unknown open source backup products
- Understand the state of commercial backup software, including explanations of CDP and data de-duplication software
- Access the current state of backup hardware, including Virtual Tape Libraries (VTLs)
DVR is nothing more than disk-based backup of your 6 | Chapter 1: The Philosophy of Backup TV. And if you’re occasionally making VHS tapes of your DVR shows, it’s even a D2D2T system.) The use of disk in backup and recovery systems has exploded in the last few years, and it’s really solving a lot of problems. Chapter 9 covers backup hardware and goes into much more detail about why disks have become a very attractive backup target. Here is a quick summary of some of those reasons: Cost The
any manual intervention from you. It also means that you can use the same Informix and Sybase startup scripts on every system, instead of having to hardcode each database’s name into the startup scripts. How do you know what systems to back up? Although I never got around to it, one of the scripts I always wanted to write was a script that monitored the various host databases, looking for new systems. I wanted to get a complete list of all hosts from Domain Name System (DNS) and compare it
any manual intervention from you. It also means that you can use the same Informix and Sybase startup scripts on every system, instead of having to hardcode each database’s name into the startup scripts. How do you know what systems to back up? Although I never got around to it, one of the scripts I always wanted to write was a script that monitored the various host databases, looking for new systems. I wanted to get a complete list of all hosts from Domain Name System (DNS) and compare it
are more difficult to back up. Some backup packages handle open files better than others, but some cannot back them up at all. Also, if the file is changing throughout the day, you will not be sure what version you actually get on your backup. Speed Another reason for not doing backups during the day is that the network is much busier, hence slower, during the day. The throughput of your backups slows significantly when your network is being used for normal traffic. If this is a problem at night
new/modified files Incremental of whole filesystem only, multiple levels List files as they are being backed up tar cvf 2>logfile cpio -v 2>logfile Only after backup with Back up based on other criteria Yes, with GNU tar Restore absolute pathnames to relative location Yes, with GNU tar Interactive decision on restore Yes or no possible with tar Compatibility restore -t >logfile (dump can show % com- plete, though) find can use multiple cri- No teria cpio Always relative to