HP StoreOnce 6500 Backup Installation Planning and Preparation Guide

Table 13 Number of physical network ports required per portset (continued)
161284Data only2 per node1GbE ports
3224168Management
and Data
4 per node1GbE ports
2418126Management
and Data
3 per node1GbE ports
NOTE: To calculate the total number of physical connections required, add the totals in the
appropriate column. For example, on a 4–couplet system with Management on two 1GbE ports,
Data on the other two 1GbE ports and Data on the two 10GbE ports, 48 physical connections
are required.
Portsets and VLAN tagging
There is a fixed number of available physical NIC ports on the HP StoreOnce Backup system,
defined by the number of 1GbE ports plus 10GbE ports, therefore there is a limit on the number
of physical subnets to which the HP StoreOnce Backup system can be directly connected.
If your network requires more subnets than this—for example, twenty—the network administrator
can define 20 VLANs, each with its own subnet and, typically, use the 10GbE bonded link to the
HP StoreOnce Backup system as a trunk.
To do this, the network administrator sets up the switches with the necessary VLANs and identifies
20 tags. (The tag values can be any integer between range 2-4094.)
On the StoreOnce CLI, the HP StoreOnce administrator first defines the portset for the physical
10GbE link to be VLAN enabled, and then configures twenty VLAN subnets to use that portset,
supplying the relevant VLAN tag IDs as part of the subnet configuration.
In the following example three portsets are configured on the StoreOnce Backup system:
• eth0 and eth1 are used for the Management subnet. This portset cannot be VLAN enabled
because it is used for the Management subnet.
• eth 2 and eth3 are used for the StoreOnce Catalyst Copy and Replication subnet and provide
the default gateway to the WAN. This portset is also not VLAN enabled and can, therefore,
support one Data subnet only.
• eth5 and eth7 are used for Backup subnets. This portset is VLAN enabled and currently supports
two VLAN subnets. Further VLAN subnets may be configured on this subnet, as required.
NOTE: The following diagram shows the connections on one node only. The same connections
apply to all nodes in the cluster.
22 Connecting to your network