The Replication Process; Seeding The Replication Target Appliance - HP StorageWorks D2D - Backup Systems User Manual

2. If you have saved the LTU as a .DAT file, click Upload license file and use the Browse option to
locate the file. Click Upload.
If you used email or a temporary file, cut and paste the string exactly as you obtained it from the
HP Licensing website. and click Enter LTU string.

The Replication process

All Replication status and configuration pages are available from the Replication tab on the Web
Management Interface and are described in Chapter
This section explains the various stages in the Configuration process and how you use the Replication
wizard to configure mappings.

Seeding the Replication Target Appliance

Data deduplication must be enabled on a library that is being used for replication. This ensures that
the amount of data to be replicated is minimized and the impact on network traffic is negligible.
However, the benefits of deduplication apply only after the first full backup. The first synchronization
of the cartridges will require significant bandwidth. The same applies in reverse, if you need to recover
a Target cartridge from a Source cartridge. Therefore, there is an advantage to being able to accelerate
the replication of the first full backup. This process is known as seeding.
As part of the deployment strategy, it is important to decide how the first full backup will be seeded.
There are three main options:
• This option does not use seeding, instead we simply allow the first synchronization to take place
over the WAN. If required, you may choose to limit the bandwidth available for the replication
job from the Local Settings on the Web Management Interface, see
"Local Settings
not complete before the next scheduled backup to the slot being replicated.
88 Configuring and using replication
(Replication)" on page 137. This could take a very long time to complete and may
"The Web Management Interface " on page 107.