Supported Backup Applications And Data Types; Deduplication Preparation - HP StorageWorks 12000 - Virtual Library System EVA Gateway Manual

• Install deduplication licenses
• Configure the available deduplication options using Command View VLS
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 users guide for the complete
setup procedures.

Supported Backup Applications and Data Types

Accelerated deduplication can only be used with supported backup applications and operating
systems. (In firmware version 3.3.0 and higher, all data types within the supported backup application
and operating system matrix will deduplicate.) See
on backup applications and operating system types supported with HP Accelerated deduplication.

Deduplication Preparation

Before upgrading the device, review your current free disk capacity to ensure that there is enough to
hold the deduplication database (1 TB for VLS6000 models, and 2 TB for VLS9000 and VLS12000
models) and deduplication working space (requires a minimum of 5% of your disk capacity). For
example, if you have a VLS6600 with 53 TB capacity you need at least 3.65 TB of free capacity. If
you have a VLS9000 or VLS12000 with 120 TB capacity, you need at least 8 TB of free capacity. If
you do not have enough free disk space (i.e., all the device disk capacity is allocated to virtual
cartridges), you must delete some virtual cartridges (those holding the lowest priority backup data) to
free up enough disk space for the deduplication database and working space.
You must then upgrade the VLS to the minimum hardware/firmware level that supports Accelerated
deduplication:
• For VLS nodes that current have 4 GB of RAM, you must upgrade them with an additional 12 GB
RAM so that every VLS node in the device has 16 GB RAM. Nodes with the "B" part number (e.g.,
VLS9000 node AG310B) will already have 16 GB of RAM pre-installed.
To determine how much RAM you have on each node, log into Command View VLS, select the
System tab, expand Chassis in the navigation pane, and select a node. The Total Memory is listed
in the General section of the node details. The GUI reports usable memory and will display memory
of 14465MB when 16 GB RAM is installed in the node.
• Multiple storage pools are not currently supported for deduplication. Before upgrading to firmware
version 3.x, if your VLS9000 or VLS12000 has multiple storage pools you must destroy the existing
pools and change them to a single storage pool. If your VLS has only one storage pool configured,
the upgrade will not destroy the existing backup data on the virtual cartridges.
On the VLS9000 you can use the Edit Policy task and select the "All" arrays option; this destroys
all existing virtual cartridges. On the VLS12000 you can retain Storage Pool1 but delete all other
existing storage pools, then add their EVA LUNs to Storage Pool1 (selecting the "Format" option);
this retains the virtual cartridges in Pool1 but destroy the virtual cartridges in the other pools.
• Upgrade to firmware version 3.3.0 or higher. The HP StorageWorks Virtual Library System Firmware
Version 3.3.0 release notes covers the detailed installation process which uses the version 3.3.0
Quick Restore DVDs to reinstall the deduplication-capable firmware on all nodes in the device.
The VLS warm failover feature maintains the original device configuration so that the resulting
upgraded device will present its original virtual libraries with the same WWPNs and the original
virtual cartridges with all their backup data intact.
• Install deduplication licenses and wait for the "Completed deduplication installation" and "Initial-
ization for node0 complete" notifications.
• If deduplication failed to initialize due to lack of free space for the deduplication metadata database
(1 TB for VLS6000–series, 2 TB for VLS9000–series and VLS12000), you must free up that disk
http://www.hp.com/go/ebs
HP StorageWorks VLS and D2D Solutions Guide
for more information
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