Chapter 4: BACKING UP AND RESTORING DATA

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Describe the various types of hardware used to perform backups. Understand the difference between full, incremental, and differential backup jobs.

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Nội dung Text: Chapter 4: BACKING UP AND RESTORING DATA

1 Chapter 4 BACKING UP AND RESTORING DATA
Chapter 4: BACKING UP AND RESTORING DATA 2 CHAPTER OVERVIEW • Describe the various types of hardware used to perform backups. • Understand the difference between full, incremental, and differential backup jobs. • List the capabilities of the Windows Server 2003 Backup program. • Back up and restore an Active Directory database. • Use volume shadow copies.
Chapter 4: BACKING UP AND RESTORING DATA 3 BACKING UP DATA • Why do we back up data? • Why do we need to back up data?
Chapter 4: BACKING UP AND RESTORING DATA 4 BACKUP SOLUTION • Backup hardware • Backup medium • Backup software • Data to be backed up
Chapter 4: BACKING UP AND RESTORING DATA 5 BACKUP HARDWARE • Capacity • Speed • Cost
Chapter 4: BACKING UP AND RESTORING DATA 6 CD-ROM AND DVD-ROM • CD • Inexpensive, widely supported • Capacity up to 650 MB • DVD • Becoming less expensive • Less support than for CDs • Capacity can be over 4 GB
Chapter 4: BACKING UP AND RESTORING DATA 7 CARTRIDGE DRIVES • Proprietary technology • Zip (Up to 750-MB capacity) • Jaz (2-GB capacity)
Chapter 4: BACKING UP AND RESTORING DATA 8 MAGNETIC TAPE DRIVES • Use single or double spool magnetic cartridges • Low cost per megabyte • Large capacity
Chapter 4: BACKING UP AND RESTORING DATA 9 AUTOCHANGERS • Reduce the need for manual intervention in backups • Allow you to back up more data • Preserves investment in media
Chapter 4: BACKING UP AND RESTORING DATA 10 SELECTING A DRIVE INTERFACE • IDE • Inexpensive • Performance degrades drastically when using more than one device per channel • SCSI • Faster than IDE, more suited to writing continuous streams of data • Might require additional host bus adapter (controller)
Chapter 4: BACKING UP AND RESTORING DATA 11 BACKUP SOFTWARE • Windows Server 2003 Backup • Third-party software • Veritas Backup Exec • BrightStor ARCserve Backup
Chapter 4: BACKING UP AND RESTORING DATA 12 TARGET SELECTION • Anything that is to be backed up is considered a backup target, including: • Single file or folder • Entire drive • Entire system • Another system on the network
Chapter 4: BACKING UP AND RESTORING DATA 13 USING TREE SELECTION
Chapter 4: BACKING UP AND RESTORING DATA 14 USING FILTERS • Filter on file creation date/time, size, or type • Allows you to perform customized backups • Can reduce the time needed to back up and the amount of media required
Chapter 4: BACKING UP AND RESTORING DATA 15 TYPE OF BACKUPS Archive Type Data Flag Full or Normal All Clear Incremental Modified since last full or Clear incremental backup Differential Modified since last full or Not Reset incremental backup Copy Backup – ignoring the Not Reset archive flag Daily Based on today’s date Not Reset
Chapter 4: BACKING UP AND RESTORING DATA 16 BACKUP JOB TYPES: NORMAL • Backs up all files • Clears the archive bit • Can require large data storage capacity
Chapter 4: BACKING UP AND RESTORING DATA 17 BACKUP JOB TYPES: INCREMENTAL • Backs up only files that have been modified or created since the last full or incremental backup • Clears the archive bit • Can require considerably less storage space than a normal backup • Faster to backup than differential, longer restore
Chapter 4: BACKING UP AND RESTORING DATA 18 BACKUP JOB TYPES: DIFFERENTIAL • Backs up only files that have been modified or created since the last full or incremental backup • Does not clear the archive bit • Can require considerably less storage space than a normal backup • Longer to backup than incremental, faster restore
Chapter 4: BACKING UP AND RESTORING DATA 19 COPY JOBS AND DAILY JOBS • Copy job • Backs up all files irrespective of archive bit status • Does not change archive bit status • Daily job • Backs up files based on today's date • Does not change archive bit status
Chapter 4: BACKING UP AND RESTORING DATA 20 SPECIFYING A BACKUP JOB TYPE