HP 3PAR Application Software Suite for VMware Licenses - Manual (Page 78)

7 Working with Remote Copy
A Remote Copy feature is now available for you to create and manage both Synchronous or
Periodic Virtual Copies at the RC Group level. In addition, the Remote Copy feature provides a
GUI interface and basic CLI command functionality to register, create, schedule, update and remove
Remote Copy pairings.
NOTE: The system allows snapshots to be taken for more than eight VMs for application consistent
Local or Remote Copy snapshots. However, if you select more than 8 VMs, a warning message is
displayed and the Recovery Set creation for application consistency might fail due to the time
required to quiesce the VMs.
HP 3PAR Recovery Manager for VMware software supports Peer Persistence between multiple
servers through synchronized Remote Copy. The existing Remote Copy disaster recovery functionality
in synchronous mode compliments a Peer Persistence setup by including an automatic volume
creation on the secondary array when a primary volume is added to a group. Both the primary
and secondary clusters provide a path to an ESXi host virtual volume with the same world-wide-name.
The primary Remote Copy group provides the active path while the secondary Remote Copy group
provides a passive path to targeted virtual volume.
When Virtual Volumes are using Peer Persistence, RMV blocks the local Virtual Volume creation
for Virtual Machines and Datastores while allowing the creation of remote Virtual Copies on Remote
Copy Groups. As a result, when an active path failovers to a different storage system, the virtual
copies become available on either storage systems for restoration.
For more information about establishing Peer Persistence setup, refer to the HP 3PAR Remote Copy
User Guide.
Use the Admin tool to register and configure Remote Copy Pairs before launching the vCenter
plug-in feature to create a snapshot of your system.
Ensure the following requirements are satisfied before registering a Remote Copy pair:
•
Remote Copy configuration already exists on the storage systems. Use the HP 3PAR OS CLI
or IMC GUI to create the Remote Copy configuration if they do not exists.
•
Recovery Manager Software for VMware is already installed on the remote host situated in
a remote site.
•
Establish IP access to the remote host.
•
You can configure the Remote Copy volume group for synchronization in one of the following
modes:
◦ synchronous mode
◦
asynchronous periodic mode with replication period value set to zero
CAUTION: If you set the replication period value to zero, then the Remote Copy
replication is dependent on the RMV scheduler. So you must ensure that the RMV service
is available all the time.
78 Working with Remote Copy