BACKING UP AND RESTORING DATA - PowerPoint PPT Presentation

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BACKING UP AND RESTORING DATA

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    1. BACKING UP AND RESTORING DATA

    2. BACKING UP DATA Why do we back up data? Why do we need to back up data?

    3. BACKUP REQUIREMENTS One or more backup drives A backup software product Data to be backed up

    4. BACKUP HARDWARE Capacity Speed Cost

    5. CARTRIDGE DRIVES Proprietary technology Zip (Up to 750-MB capacity) Jaz (2-GB capacity)

    6. MAGNETIC TAPE DRIVES Use single or double spool magnetic cartridges Low cost per megabyte Large capacity

    7. AUTOCHANGERS Reduce the need for manual intervention in backups Allow you to back up more data Preserves investment in media

    8. 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)

    9. BACKUP SOFTWARE Windows Server 2003 Backup Third-party software (Symantec Backup Exec, BrightStor ARCserve Backup)

    10. 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

    11. USING TREE SELECTION

    12. BACKUP JOB TYPES: NORMAL Backs up all files Clears the archive bit Can require large data storage capacity

    13. 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

    14. 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

    15. 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

    16. SPECIFYING A BACKUP JOB TYPE

    17. JOB SCHEDULING Allows backups to be performed during off-hours Reduces potential for administrative error

    18. 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

    19. MEDIA ROTATION Provides a method to retain backups for a given period Prevents overuse of media

    20. PERFORMING RESTORES Complexity depends on backup cycle in use (Normal, incremental, differential). Amount of time depends on volume of data to be restored. Periodic restores should be performed to test integrity of backups.

    21. RESTORING FULL BACKUPS Easiest of all backup methods to restore Restores latest full backup

    22. 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

    23. RESTORING FULL AND DIFFERENTIAL BACKUPS Restores the latest full backup Restores the latest differential backup Only two restore steps are required

    24. BACKUP SECURITY Create specific user account for backups Password-protect tapes Store and transport tapes securely

    25. USING WINDOWS SERVER 2003 BACKUP

    26. SUMMARY A network backup solution consists of backup hardware, backup software, and a plan for using them. Incremental and differential backup jobs use the archive bit to determine what files need to be backed up. Network backup software enables you to back up data from computers anywhere on the network. Volume shadow copy enables users to access copies of files they have accidentally deleted or damaged. In Windows Server 2003 Backup, the System State object provides an easy way to back up Active Directory.