Dell PowerVault DL2200 - Manual (Page 4)

exists where the customer’s VMware Server or Exchange Servers are the most powerful machines available in terms
of processor speed or disk throughout.. Where appropriate, why not leverage some of this remote computing
power to achieve faster backups? Both of these situations are examples where client deduplication can offer a
comprehensive solution to the data protection challenges brought on by the environment.
Generally, remote office backup strategies have two basic architectures. First, there are remote offices which do not
have local storage, and backup data is sent directly over the LAN or WAN to the data center for protection. Second,
there are remote offices that employ local storage and then “forward” that locally stored backup data to the data
center for protection. Both of these configurations can use Backup Exec 2010’s Deduplication Option to streamline
and improve backup and recovery for remote offices.
Client deduplication is the default deduplication method Symantec recommends for several reasons:
• Client deduplication enables greater scalability: Client deduplication spreads processor usage out across all
clients running backups, enabling the Media Server to process more concurrent backups.
• Client deduplication minimizes network data transfers: Data is deduplicated at the client and sent across
the network in deduplicated form. In this way, only the unique data is sent to the media server, rather than
the entire backup stream. Most environments – be it a LAN or a WAN environment – can benefit from less
data being sent across the network. This is especially useful for WAN or Remote Office protection. Often,
the data sent over the wire is a fraction of the original data size, reducing network traffic and contention for
network resources.
Each Backup Exec Agent for Windows Systems has the built-in capability to do client deduplication, and many of the
Application Agents (Backup Exec Agent for Exchange, Backup Exec Agent for SQL Server, etc.) can also utilize client
deduplication for backup. Note that all deduplication operations require the Deduplication Option to be licensed on
the Media Server. See Table 1 for details.