HP 3PAR Remote Copy Software - Manual (Page 65)

3.3 Gathering Necessary Information
InForm OS Version 2.3.1 Remote Copy User’s Guide
■ When configuring the Gigabit Ethernet (GigE) interface, 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 will not be available to the Remote Copy
software.
■ All virtual volumes used with Remote Copy must be Thinly Provisioned Virtual Volumes
(TPVVs) with snapshot space, which require the use of 3PAR Thin Provisioning, or fully
provisioned virtual volumes. Both of these volume types draw space from a Common
Provisioning Group (CPG). See Remote Copy and Thin Provisioning on page 2.33 and the
3PAR InForm OS Concepts Guide for details about TPVVs, fully provisioned virtual volumes,
and CPGs.
■ You must create the volumes on each storage system in the Remote Copy configuration
separately by using the normal volume creation commands before creating volume groups
for use with Remote Copy. The volumes on the primary server must be the same size as
those on the backup server. See the 3PAR InForm OS CLI Administrator’s Manual for
instructions on creating volumes.
3.3 Gathering Necessary Information
Determine the setup that best meets your desired configuration (N-to-1, 1-to-N, bidirectional,
unidirectional, and so on) and use Figure 3-1 through Figure 3-4 to help gather the necessary
information to continue your Remote Copy setup as described in the sections that follow.
For 1-to-N and N-to-1 configurations, or when N-to-1 and bidirectional Remote Copy are used
within the same configuration, you can use Figure 3-3 or Figure 3-4 (depending on Remote
Copy transport layer) to supply information for additional systems. You might want to make a
copy of Figure 3-3 or Figure 3-4 (depending on the Remote Copy transport layer) in order to fill
in information for all links.
In preparation for setting up Remote Copy, obtain the IP addresses or 64-bit World Wide Name
(WWN) address information for the interfaces of the storage servers from your network
administrator and be prepared to provide 3PAR technicians with other details about the
network connections, as necessary. Contact your network administrator to obtain the gateway
IP addresses, netmask, and IP addresses for each link. In addition, you must verify that the
firewall settings allow access to port 5785 between the Remote Copy systems.