Licensing - HP StorageWorks 12000 - Virtual Library System EVA Gateway Manual

space by deleting cartridges. In the 3.2 firmware this is disabled in the GUI, so use the VLS CLI
to perform this.
NOTE:
Use only the CLI cartridge delete option to delete non-deduplicated cartridges.
After deduplication is successfully enabled, ensure virtual cartridges are created correctly for optimum
deduplication performance and for correct backup capacity:
• If you are creating new cartridges for deduplication, then sizing should be 50-100 GB up to 300
GB maximum (see
backup data created when the VLS was running 2.x firmware, the Storage Pool created by the
2.x firmware has lower cartridge limits. You should size the virtual cartridges to at least 100 GB
or larger.
• If you already have existing non-deduplicated cartridges that exceed these cartridge sizing require-
ments, you must resize these existing cartridges to match the deduplication requirements. This will
not affect any existing backup data until the next backup is performed to the resized cartridge.
• Because deduplication automatically enables cartridge oversubscription, you can create more
virtual cartridge capacity than the available physical disk capacity (the deduplication will reduce
the amount of physical disk used on the virtual cartridge backup data by eliminating duplicate
data). Only create the amount of virtual cartridge capacity that you need for your backup retention
policy (see
slots to contain the oversubscribed set of virtual cartridges. For existing virtual libraries that do not
have enough slots, you must modify the existing virtual library to increase the number of slots
(either delete/recreate the virtual library with more slots or contact your HP support representative
for assistance in expanding the existing virtual library).
• Remember to update the backup application library configuration to detect any new library slots
and new virtual cartridges.
• Use shared media pools (i.e., share the media across backup policies/names and across media
servers). See
• Review Detailed Backup Application Guidelines for VLS
ation guidelines such as setting 256 KB tape record size, etc.
A complete backup is necessary to initialize Accelerated deduplication, but data in subsequent sessions
can then be deduplicated. See the HP StorageWorks Virtual Library System user guide for complete
setup procedures. See
non-deduplicated backup data. After deduplication has been running for multiple full backup cycles,
you can check the deduplication reports to see how effectively it is running; see
Reporting. Deduplication configuration options are available through Command View VLS to allow
optimization of file server deduplication (see
application-specific data type configurations (see ???).

Licensing

Accelerated deduplication is a licensed feature. Licenses are based on the physical disk capacity of
the VLS device. You must install enough deduplication licenses for all disk LUNs.
NOTE:
You cannot license a partial configuration. The entire capacity of the device must be licensed.
154 Virtual Library Systems
Media Management
Tape Oversubscription). This means you need to ensure you create enough virtual library
Media Management .
Migrating your Existing Backup Data
). If you are sizing cartridges for a VLS that has existing
for backup application-specific deduplic-
for details on how to handle existing
Optimizing File Server Deduplication) or handling backup
Configuration and