HP StorageWorks 6000-series Virtual Library System User Guide (AH809-96049, September 2010)

Deduplication Summary
The Deduplication Summary displays a graph depicting the storage savings achieved with data that
has been fully deduplicated.
1. Select the System tab.
2. Select Chassis on the navigation tree to expand it.
3. Select Deduplication.
The deduplication summary displays.
In the graph displayed, the original data is the uncompressed physical size of all user data that
has fully deduplicated; the deduplicated data is the actual physical storage space consumed by
the original data after it has been both compressed (if enabled) and fully deduplicated.
Deduplication Backup Report
The backup report provides information on the deduplication of your backup jobs.
1. Select Backup Report from the navigation tree or from the task bar of the Deduplication Summary
screen.
The backup report options display.
2. Unselect any agents, backup types, or states you want to exclude from the report. By default, all
supported and enabled backup jobs are selected and display in the report.
3. Select View Backups.
The screen displays a list of backup jobs meeting the set criteria and includes the following
information:
• State — the state of the backup job (see below)
• Backup Name
• Policy
• Type
• Logical Size — the size of the backup data sent to the VLS (before deduplication and com-
pression)
• Physical Size Estimate — the disk space currently used to store the compressed backup, which
varies over time as deduplication processes the backup and reclaims redundant disk space
• Dedupe Ratio Estimate — the estimated deduplication ratio (based on the Logical Size divided
by Physical Size Estimate)
4. From the results list, select a backup name to see the backup statistics for that particular job.
The backup information includes a graph depicting the original data size (shown as zero prior
to the deduplication), the deduplicated size, and the unprocessed data. In the Cartridge Details,
select a barcode to see its cartridge report.
The deduplication reports show the following states:
Waiting for Next Backup — the backup has nothing to difference against and is therefore waiting
for a new backup. Incr/diff backups difference against the new full backup, not the old full backup.
Delta-diff in Process — the backup has identified another version of itself to difference against
and is now running differencing to identify the duplicate data between the two versions. With
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