HP StoreOnce Backup System Concepts and Configuration Guidelines (BB877-90913, November 2013)

Dual port configurations
This example describes configuring multiple subnets in separate IP address ranges for each pair
of network ports. A maximum of 4 separate subnets can be configured on a StoreOnce 4420 or
4430 appliance (2 x 1GbE and 2 x 10GbE).
Use this mode:
• If servers to be backed up are split across two physical networks which need independent
access to the appliance. In this case, virtual libraries and shares and Catalyst stores will be
available on both network ports; the host configuration defines which port is used.
• If separate data (“Network SAN”) and management LANs are being used, i.e. each server
has a port for business network traffic and another for data backup. In this case, one port on
the appliance can be used solely for access to the StoreOnce Management Interface with the
other used for data transfer.
Figure 11 Network configuration, dual port mode
In the case of a separate network SAN being used, configuration of CIFS backup shares with
Active Directory authentication requires careful consideration, see Network Configurations for CIFS
AD for more information.
Network configuration in single-node StoreOnce Backup systems 31