Dell PowerVault DL2200 - Manual (Page 5)

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Because the backup resides on disk, it is much faster to restore. There is no need to locate the tape, load it, and then
reload the data. It is faster and more efficient.
Backup Process
1. A full backup of each file server is performed once a week.
2. Incremental/differential backups of each file server are performed daily, during off‐peak hours.
3. Backups can be migrated to tape for long‐term data protection or disaster recovery.
Recovery Process
1. Users submit a file restore request to administrators.
2. Administrators quickly restore the file from disk at the point of the last backup.
Continuous Disk‐Based Backups
Key benefits
Continuous data protection revolutionizes data protection by offering the core benefits of disk‐based data
protection (faster backups, near‐instant restore), while lessening some of the hardships of current backups. Key
benefits include:
• Help ensure that data is always protected
• Only captures changed portion of files (block‐level changes)
• Simplifies backups—eliminates incrementals, fulls, and so on
• Can back up multiple file servers simultaneously
• Minimizes backup windows for protected systems
• Leverages tape backups for long‐term archival and offsite storage
• Files in native format, enabling end‐user recovery
Key Drawbacks
• May not provide tape‐based backup, which is still needed for long‐term data protection or offsite storage
• May not integrate with the current backup solution
Recovery
Instant, flexible, and granular recovery is a central focal point for continuous disk‐based protection. CPS significantly
reduces IT administration while improving service levels and end‐user productivity. End users can find and retrieve
files in seconds without contacting IT.
Key benefits include:
• Provides instantaneous recovery
• Enables end users to retrieve their own files
• Enables recovery of files from multiple points in time
Backup Process