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Replication and Tape Attach
Tape Attach provides very useful additional functionality with replication. Because it is a function of
the Web Management Interface, copy to tape for disaster recovery purposes can occur at the replication
Target Appliance in the Data Center without the need for any involvement from hosts on remote sites.
All scheduling and processing becomes a Back Office task. See also “
Using Tape Attach ” on page 147.
Remote Site Data Center
D2D Appliance
D2D Appliance Tape Library
Replicate
Copy
Backup
Host
Figure 36 Replication and Tape attach
Similarly, it provides an efficient option for replicating the first instance of data, which contains the
full backup, onto the Target Appliance without placing any load on network bandwidth. (Deduplication
ensures that subsequent replication tasks do not place much load on network bandwidth.) See also
“
Seeding the Replication Target Appliance ” on page 88.
Preparing for replication
There are 5 major considerations:
• Make sure you understand the basic concepts and terminology.
• Decide which deployment model is appropriate for your organization.
• Map your replication workflow and decide how the first backup will be seeded onto the target
appliance.
• Configure and monitor replication on the Web Management Interface
• Define your Disaster Recovery strategy if the Source Appliance fails.
Replication concepts and terminology
When configuring appliances for replication, there are some key concepts and terminology that it is
important to understand.
Replication elements
•
Source Appliance:
This is the D2D Backup System with the library device that is being used for
backup by a host server. The library device contains the slots that need to be replicated.
• Target Appliance: This is the D2D Backup System with the library device that contains the replicated
slots; it is an exact match of the library on the source HP D2D Backup System. This appliance
needs a replication license.
•
Non-Replicating Library:
This is a library on a D2D Backup System that has not been configured
as a source or target for replication cartridge slots.
Configuring and using replication 76