HP StoreOnce 4430 HP D2D Backup System Concepts guide (EH985-90915, March 2011 - Page 11

Backup applications and Replication Target libraries, VTL devices on Fibre Channel - installation guide

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Figure 2 Device configuration with multiple hosts Backup applications and Replication Target libraries Replication Target libraries are not normally visible to the host, but you can configure devices to make them visible to backup applications. There are two occasions when it may be useful to make a target library visible to the backup application on the host. • To confirm that replication is working correctly and check the integrity of the replicated backup by doing a test restore • To perform manual tape copy jobs to a tape device on the network using the backup application See the HP StoreOnce D2D Backup System user guide for more information about using this feature. VTL devices on Fibre Channel FC Library devices on the HP D2D cannot be created for a specific host during installation; they must be created using the Web Management interface. When you assign a library to a FC port (port 1 or port 2) it becomes visible on the FC SAN. When you log in, you log in to the switch to which the host is connected, which means that the library is visible to all other devices on the SAN. You can zone your network so that only specific devices have access to it, but generally it is visible to all. NOTE: Fibre Channel is not supported on the HP D2D4106i or the HP D2D2500 Series Backup System. Fibre Channel topologies The HP StoreOnce Backup System supports both switched fabric and direct attach (private loop) topologies. A direct attach (point-point) topology is not supported. A switched fabric topology utilizes one or more fabric switches to provide a flexible configuration between several Fibre Channel hosts and Fibre Channel targets such as HP StoreOnce Backup Systems. Switched fabric configurations are implemented with Fibre Channel switches. Switches may be cascaded or meshed together to form larger fabrics. VTL devices on Fibre Channel 11

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Figure 2 Device configuration with multiple hosts
Backup applications and Replication Target libraries
Replication Target libraries are not normally visible to the host, but you can configure devices to
make them visible to backup applications.
There are two occasions when it may be useful to make a target library visible to the backup
application on the host.
•
To confirm that replication is working correctly and check the integrity of the replicated backup
by doing a test restore
•
To perform manual tape copy jobs to a tape device on the network using the backup application
See the
HP StoreOnce D2D Backup System user guide
for more information about using this feature.
VTL devices on Fibre Channel
FC Library devices on the HP D2D cannot be created for a specific host during installation; they
must be created using the Web Management interface. When you assign a library to a FC port
(port 1 or port 2) it becomes visible on the FC SAN. When you log in, you log in to the switch to
which the host is connected, which means that the library is visible to all other devices on the SAN.
You can zone your network so that only specific devices have access to it, but generally it is visible
to all.
NOTE:
Fibre Channel is not supported on the HP D2D4106i or the HP D2D2500 Series Backup
System.
Fibre Channel topologies
The HP StoreOnce Backup System supports both switched fabric and direct attach (private loop)
topologies. A direct attach (point-point) topology is not supported.
A switched fabric topology utilizes one or more fabric switches to provide a flexible configuration
between several Fibre Channel hosts and Fibre Channel targets such as HP StoreOnce Backup
Systems.
Switched fabric configurations are implemented with Fibre Channel switches. Switches may be
cascaded or meshed together to form larger fabrics.
VTL devices on Fibre Channel
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