Active To Active Example; Many To One Example; Active To Passive Replication Example; Active To Active Replication Example - HP StorageWorks D2D - Backup Systems User Manual

Office A
Host A1
Backup/
Backup
SW Restore
Figure 42 Active to Passive replication example

Active to Active example

In the following example there are again two offices, each with an HP D2D Backup System. The HP
D2D Backup System in Office A is being used by the host server for backup and restore and all of
the cartridges on the Replication-Source library are being replicated to matching slots on a
Replication-Target library on the HP D2D Backup System in Office B. However, there is also a single
host backing up to six cartridges on another library on the HP D2D Backup System in Office B. Two
of those cartridges are configured to replicate to a Replication-Target library on the HP D2D Backup
System in Office A. A replication license is required for both HP D2D Backup Systems.
Office A
Host A1
Backup/
Backup
SW
Restore
Figure 43 Active to active replication example

Many to One example

In the following example a company has two remote offices and a central data center. There are
small HP D2D Backup Systems in each remote office which host Replication-Source Libraries for backup
from local host machines. In the data center there is a larger D2D Backup System that is used solely
to host Replication-Target Libraries for the remote offices. A replication license is required only for the
HP D2D Backup System in the Data Center. That license covers all Replication-Target libraries.
This is also a good example of slot mapping. Library 2 on the Target Appliance is being used as a
Replication-Target Library by Replication-Source libraries in Office A and Office B. The
Replication-Source library in Office A is replicating two slots (colored red), while the Replication-Source
library in Office B is replicating five slots (colored red).
D2D Appliance A
Library A1
Replicate
Library A2
Replicate
D2D Appliance A
Library A1
Replicate
Library A2
Replicate
Office B
D2D Appliance B
Library B1
Library B2
Office B
D2D Appliance B
Library B1
Library B2
Backup/
Restore
D2D Backup System HP D2D4112
Host B1
Backup
SW
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