HP 3PAR Operating System Software - Manual (Page 42)

Table 3 1-to-N Remote Copy
For information, see... Step
“Requirements” (page 13) 1. Verify that your setup plan meets the 1-to-N
requirements.
“1-to-N Remote-Copy Considerations” (page 44)
Figure 20 (page 48) (basic 1-to-N setup) 2. Review the basic 1-to-N setup and the example
remote-copy pair used to illustrate setup.
“Example Unidirectional Remote-Copy Setup” (page 76)
“Setting Up a Unidirectional Configuration” (page 76) 3. Set up a unidirectional configuration for the first
remote-copy pair and start initial data replication for
the primary volume groups.
“Setting Up a Unidirectional Configuration” (page 76) 4. Set up a unidirectional configuration for the second
remote-copy pair and start initial data replication for
the primary volume groups.
“Setting Up a Bidirectional Configuration” (page 86) 5. (Optional) Set up a bidirectional configuration for the
first remote-copy pair and start initial data replication
for the primary volume groups.
“Setting Up a Bidirectional Configuration” (page 86) 6. (Optional) Set up a bidirectional configuration for the
second remote-copy pair and start initial data replication
for the primary volume groups.
M-to-N Remote-Copy Considerations
1-to-1 Remote-Copy Considerations
Synchronous remote copy cannot be configured with FCIP. FCIP can be used only in asynchronous
periodic mode.
As of HP 3PAR OS 3.1.3 and later, four RCFC links per node are supported. In a 1-to-1 remote-copy
configuration with eight nodes on each of the primary and backup systems, 32 RCFC links can be
configured. For FCIP, four physical links can be configured.
On the following storage systems, an FC HBA may be shared between host-connect and RCFC.
Host and RCFC traffic must be on separate ports:
•
HP 3PAR 10000 StoreServ Storage
•
HP 3PAR 7450 StoreServ Storage
•
HP 3PAR 7400 StoreServ Storage
•
HP 3PAR 7000 StoreServ Storage
Mixed-Mode Support in 1-to-1 Remote-Copy Configurations
Prior to HP 3PAR OS 3.1.2, HP 3PAR Remote Copy supported only a single replication mode
(synchronous or asynchronous periodic mode) between a pair of HP 3PAR StoreServ Storage
systems running in a 1-to-1 remote-copy configuration. HP 3PAR OS 3.1.2 and later supports mixed
synchronous and asynchronous periodic support in a 1-to-1 remote-copy configuration. A mixed
synchronous and asynchronous periodic configuration allows some host applications to use
asynchronous periodic mode while other applications simultaneously use synchronous mode. In a
mixed synchronous and asynchronous periodic configuration:
•
If the 1-to-1 remote-copy system is expected to support mixed (synchronous and asynchronous
periodic) transport layers, ensure that there are enough transports of the desired type (RCIP,
RCFC).
•
For HP 3PAR StoreServ 7000 Storage series systems and HP 3PAR StoreServ 10000 Storage
series systems, the maximum number of replicated volumes on a mixed
42 Setting Up M-to-N Remote Copy