HP 9000 Virtual Library System - Manual (Page 87)

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
•
Backup Time
•
Type
•
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
multi-stream backups, this process may take multiple tries (going back to "Waiting for Next Backup"
state each time) until the differencing locates the correct stream.
Pending Reclamation — the differencing is complete (duplicate data has been identified) and
space reclamation is now waiting for full cartridges before it can begin.
Partially Reclaimed — in a backup job that spanned multiple cartridges, the full cartridges
have been space reclaimed but the last tape in the spanned set (which is partially full) is waiting
until that tape is full before it can reclaim space.
Dedupe Complete — deduplication, including all space reclamation, is complete for this backup
job.
No Match Found — indicates backups that cannot be deduplicated because they were unable
to match with their previous version due to large-scale modification.
In the detailed Backup and Cartridge reports, the Dedupe Ratio Estimate represents the overall
compression ratio (including both deduplication and compression) of that backup/cartridge based
on the amount of logical backup data stored versus the amount of physical disk space used. If the
backup job status is “Waiting for next backup,” “Delta-diff in Progress,” or “Pending Reclamation,”
the ratio will only include the compression because deduplication will not have actually space
Viewing Deduplication Statistics and Reports 87