1 BACKING UP AND RESTORING DATA Chapter 4 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) [...]... backup • Restores the latest differential backup • Only two restore steps are required Chapter 4: BACKING UP AND RESTORING DATA 30 DISASTER RECOVERY Chapter 4: BACKING UP AND RESTORING DATA 31 BACKUP SECURITY • Create specific user account for backups • Password-protect tapes • Store and transport tapes securely Chapter 4: BACKING UP AND RESTORING DATA 32 USING WINDOWS SERVER 2003 BACKUP Chapter 4: BACKING. .. status Chapter 4: BACKING UP AND RESTORING DATA 20 SPECIFYING A BACKUP JOB TYPE Chapter 4: BACKING UP AND RESTORING DATA 21 JOB SCHEDULING • Allows backups to be performed during off-hours • Reduces potential for administrative error Chapter 4: BACKING UP AND RESTORING DATA 22 MAINTAINING BACKUP LOGS Detailed • Includes name and size of every file backed up Summary • Errors, number of files backed up, ... of all backup methods to restore • Restores latest full backup Chapter 4: BACKING UP AND RESTORING DATA 28 RESTORING FULL AND INCREMENTAL BACKUPS • Restores the latest full backup • Restores incremental backups from oldest to most recent • Number of restore steps depends on the time since the last full backup Chapter 4: BACKING UP AND RESTORING DATA 29 RESTORING FULL AND DIFFERENTIAL BACKUPS • Restores.. .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. .. incremental backup Clear Differential Modified since last full or incremental backup Not Reset Copy Backup – ignoring the archive flag Not Reset Daily Based on today’s date Not Reset Type Data 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:... 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 Full or Normal All Archive Flag Clear... BACKING UP AND RESTORING DATA 33 VOLUME SHADOW COPY • Periodically saves copies of files • Can be used to restore previous versions of a file • Available only in Windows Server 2003 and Windows XP • Also used by Windows Server 2003 Backup to make copies of open files Chapter 4: BACKING UP AND RESTORING DATA 34 ENABLING VOLUME SHADOW COPY Chapter 4: BACKING UP AND RESTORING DATA 35 BACKING UP ACTIVE... of data written to a tape, with little or no performance impact Chapter 4: BACKING UP AND RESTORING DATA 26 PERFORMING RESTORES • Complexity depends on backup cycle in use (full, incremental, differential) • Amount of time depends on volume of data to be restored • Periodic restores should be performed to test integrity of backups Chapter 4: BACKING UP AND RESTORING DATA 27 RESTORING FULL BACKUPS... amount of data backed up None • No logging, not even of error messages Chapter 4: BACKING UP AND RESTORING DATA 23 CATALOGING • Allows backup software to keep track of what file is on what tape • Eliminates the need for administrators to remember detailed information about the contents of a tape • Can be stored on the system hosting the backup software or the tape 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 . 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. 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,. 1 BACKING UP AND RESTORING DATA Chapter 4 Chapter 4: BACKING UP AND RESTORING DATA 2 CHAPTER OVERVIEW • Describe the various types of hardware used to perform backups. • Understand the