HP 3PAR Remote Copy Software - Manual (Page 35)

2.19 Remote Copy Connections
InForm OS Version 2.3.1 Remote Copy User’s Guide
Connections between servers in the same room could be provided as direct Gigabit Ethernet
(GigE) links or through GigE switches, or through Fibre Channel networks. Longer distances
require other topologies.
More than one link must be used to connect storage servers to maintain availability. When
there are multiple physical links between the storage servers, Remote Copy uses all the
available links to transmit data in parallel.
2.8.1 IP Networks
Before configuring Remote Copy, you need a good understanding of the IP network that will
be used to connect the storage servers. When more than one storage server is used at the same
location, it is possible that they are in the same subnet. However, it is much more likely that the
NOTE: Remote Copy over IP (RCIP) configurations can fully utilize both 1Gbps
links during the synchronization process. If lower throughput networks are used,
throughput between systems running Remote Copy might be capped by the
network.
NOTE: A GigE-capable interface is required for RCIP configurations.
NOTE: The 3PAR Remote Copy solution includes two separate network
connections between storage servers. The Remote Copy software balances the
load and manages the failover between these connections. For optimal
availability, the two connections should be connected to separate network
equipment.
CAUTION: When configuring the GigE interfaces, the GigE interface and the
management Ethernet port of an InServ Storage Server controller node should be
on different IP subnets. If they are configured on the same subnet, Remote Copy
packets might go over the management port and would not be available to the
Remote Copy software.