
Data
replication -
network efficient
disaster recovery
Data replication is the process of making a replica copy of a data set across a network to a "target site". It
is generally used to transmit backup data sets off-site to provide disaster recovery (DR) protection in the
event of catastrophic data loss at the "source site"
In the past, only the largest companies could afford to implement data replication as replicating large
volumes of data backup over a typical WAN is expensive. However, today's StoreOnce products with data
deduplication have made it possible to replicate data over lower bandwidth links for a more cost-effective,
network efficient replication solution that provides a practical disaster recovery solution for most sizes of
business, in addition to an ideal solution for centralizing the backup of remote offices.
Data deduplication shrinks the amount of backup data that needs to be replicated from the source HP
StoreOnce appliance, and as a result significantly reduces replication bandwidth requirements. Once a
replica of the data backup set has been created on a remote HP StoreOnce target appliance, all that is
required to keep the replica identical to the source is the automatic, periodic copying and movement of the
new data segments which are created during each backup. With such small amounts of data being
transmitted asynchronously, lower bandwidth networks offer sufficient performance and a much lower
cost solution.
HP's data replication feature includes replication bandwidth limiting functionality, restricting the amount
of bandwidth being used when replicating data for even more network-efficient replication. Without
replication bandwidth limiting, a replication job could use as much bandwidth as is available, potentially
making other network activities unresponsive. Replication bandwidth limiting is customer configurable at
the appliance level via the graphical user interface and is set as a percentage of the available network
bandwidth.
The following HP StoreOnce Backup systems are available with replication which may be licensed by
target.
D2D2502i - a total of 4 source appliances can replicate to a single D2D2502i target
D2D2504i - a total of 8 source appliances can replicate to a single D2D2504i target
D2D4000 - a total of 16 source appliances can replicate to a single D2D4000 target
D2D4106 - a total of 16 source appliances can replicate to a single D2D4106 target
D2D4112 - a total of 24 source appliances can replicate to a single D2D4112 target
D2D4312 - a total of 50 source appliances can replicate to a single D2D4312 target
D2D4324 - a total of 50 source appliances can replicate to a single D2D4324 target
See the 'Related Options - Replication licenses' section of this document for ordering and fulfillment
information for Replication licenses, Replication Manager and OST Plug-ins.
Once a license has been obtained, configuring and using replication is made straightforward by the
graphical user interface and configuration wizard on the HP StoreOnce appliance.
HP StoreOnce Replication Manager 2.0 allows users to monitor, report and manage multiple StoreOnce
backup systems' GUI's through a single management console. Replication Manager 2.0 provides an easier
way to monitor backup targets, showing trends analysis, enhanced topology view and email alert
notification for up to 400 StoreOnce backup systems, being replicated to a central site. Replication
Manager 2.0 provides basic trends analysis of capacity usage, replication up times and utilization analysis.
This analysis can be exported in CSV format. Replication Manager 2.0 includes real time graphical views
(with auto refresh), active directory group setting firmware identification, and a Command Line Interface.
QuickSpecs
HP StoreOnce Backup systems
Features and Benefits
DA - 13218 Worldwide — Version 18 — September 28, 2012
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