HP StoreOnce 4900 Backup, Installation And Configuration Manual

Page: 42 / 124

1. Define how many subnets you wish to support for backup to the StoreOnce Backup system,
the speed at which you wish data to be transferred and whether you require ports to be
bonded.
2. This will determine how many physical port connections you require and whether the subnet
should be configured to use 1GbE or 10GbE ports.
3. If you have more subnets than physical ports are available on the StoreOnce Backup system
and your network environment supports VLAN subnets, consider using VLAN subnets to transfer
backup data to the StoreOnce Backup system. The StoreOnce Backup system must be connected
to a port on the network switch that is trunked and tagged.
For more detailed information about cabling options and the different bonding modes with
illustrations see the HP StoreOnce Backup system Concepts and Configuration Guidelines.
The following table shows network connections and IP address requirements for different port
combinations (portsets).
Table 6 Physical network port connection options and IP address requirements
IP addresses required Network configuration notes When to use Portset contains
Single network, therefore
one IP address only. Connect to 1GbE port for
management only or to If the network interface is
required solely for Single port only
10GbE port for management management of the
and data. If DHCP enabled appliance or if low
on network and connected performance and resiliency
to 1GbE LAN port 1, backup and restore are
acceptable.
Storeonce Backup will be
discovered automatically on
network.
As many IP addresses as
physical connections are
made. Connect to as many
independent subnets as
required. Use 1GbE and Servers to be backed up are
split across multiple physical
networks with independent Multiple ports with no
bonding
10GbE ports as best meets
requirements access to the appliance.
Separate data (“Network
SAN”) and management
LANs are used, i.e. each
server has a port for
business network traffic and
another for data backup.
Depends upon number of
networks and bonding
required Two or more network ports
are configured within the
same subnet and presented
on a single IP Address. Recommended for backup
data performance and also
for resiliency of both data
and management network
connectivity. Multiple ports with bonding
When using bonded ports
the full performance of
bonded links will only be
realized if multiple host
servers are providing data.
2, 3 or 4 ports bonded = 1
IP address
2 ports 2 ports
bonded = 2 IP addresses
Can make physical
connections to up to four
1GbE ports.
Can make physical
connections to up to four
10GbE ports .
Mode 1 = One active port
on each bonded set, good
for resiliency
Mode 4 = Increased
throughput, but requires
switch configuration (LACP)
No bonding between 1GbE
and 10GbE ports is
allowed.
3 ports 1 port =
2 IP addresses
2 ports 1 port +
1 port = 3 IP addresses
Mode 6 = Good for
throughput and availability,
no switch configuration
VLAN subnets with HP StoreOnce Backup
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
42 Network configuration, understanding the StoreOnce networking concepts