Owner's manual

7 Backup scen arios using the HP
D2D Backu p System
The H P D2D Backup System combines all the traditional benefits of tape technology, such as support for
complexmediarotationschemes,withtherapidbackupandrestoretimethatisonlypossiblefromdisk.
Backup applications allow users to configure rotation schemes that use tapes for specificdays,weeks
and months of a year, often applying different retention policies to each backup job. Such rotation
schemes require an autoloader as the backup device.
Using a tape autoloader configured on your HP D2D Backup System enables you to use the sam e tape
rotation schemes that you would use with physical tape. To your backup application the tape autoloader
configuredontheHPD2DBackupSystemisaphysicaltapeautoloaderdeviceandyoucanconfigure
backup jobs from your backup application in exactly the same way as you would for tape. But you benefit
from much faster performance because you a re writing to or reading from disk.
Read this chapter for example backup scenarios. It will also give you a clearer understanding of how you
can calculate the number of slots required and ensure that disk space is used effectively.
• “Example 1: Simple ba ckup” on page 55
•
“Example 2: Office backup”onpage56
•
“Example 3 : High-performance workstation” on page 60
•
“Incorporating archive to tape into a rotation strategy” on page 61
Simple backup
• On Friday: carry out a full ba ckup to one cartridge to capture the week’s work and keep that
cartridge for four weeks before overwriting. Assum i ng a sepa rate car tridge for each week’s full
backup, four autoloader slots are required.
• For the other weekdays, Monday to Thursday: carry out incremental backups to capture that day’s
change
s (one cartridge for each day) and keep each car tridge for a week before overwriting.
Assumi
ng a separate cartridge for each day’s incremental backup, another four autoloader
slots a re required.
• On Friday overnight: run a copy job to copy Friday’s full backup to physical tape for offsite
stora
ge.
D2D Backup System
55