Restoring Data; D2D Configuration; Dynamic Deduplication Ratio - HP StorageWorks 12000 - Virtual Library System EVA Gateway Manual
Hp storageworks vls and d2d solutions guide (ag306-96028, march 2010)
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Also See for StorageWorks 12000 - Virtual Library System EVA Gateway:
- User manual (266 pages) ,
- Design manual (160 pages) ,
- Release note (13 pages)
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Figure 26 D2D Configuration
.
The current deduplication ratio for the D2D device is calculated and displayed in the GUI. This figure
updates automatically. See
Figure
27.
Figure 27 Dynamic Deduplication Ratio
.
The D2D device fully emulates a tape library, including its drive-type and supported compression.
Dynamic deduplication can be used in combination with data compression for even greater storage
savings.
You can directly connect a tape drive to the D2D device for copying and exporting data to physical
media. Data that has been deduplicated can be exported to physical tape without being reassembled
first, and without using the backup application.
Restoring Data
On receiving a restore command from the backup system, the D2D device selects the correct recipe
file and begins reading it, starting with the first hash. This process is illustrated in
Figure 28
and the
ordered list that follows.
HP StorageWorks VLS and D2D Solutions Guide
71
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