Using Remote Copy; Working With Remote Snapshots; New For Release 8.5 And Greater; Creating A Remote Snapshot - HP StorageWorks P4000 User Manual

2 Using Remote Copy

For information about how Remote Copy works and how to plan capacity for Remote Copy, see
"Understanding and planning remote

Working with remote snapshots

Remote snapshots are a core component of Remote Copy. Remote Copy uses the existing volume and
snapshot capabilities to replicate or copy, the data across geographic distances.

New for release 8.5 and greater

You can create application-managed snapshots that use VSS to quiesce the application before creating
the snapshots. Because the application is quiesced, the data in the snapshot is consistent with the
application's view of the data. That is, no data was in flight or cached waiting to be written when
the application created the snapshot.

Creating a remote snapshot

Creating a remote snapshot is the main task when working with Remote Copy. You can either create
a one-time remote snapshot or set up a schedule for recurring remote snapshots. Many of the
characteristics for either case are the same.
Create a remote snapshot by using the following steps:
Log in to the primary management group.
Log in to the remote management group.
Create a primary snapshot of the primary volume manually. When setting up a schedule to create
a remote snapshot of a volume, the software automatically creates a primary snapshot, which is
then copied to the remote volume.
Either create a remote volume on a remote management group, or select an existing remote volume.
Create the remote snapshot.

Best practice

The best way to prepare for remote snapshots is to create the management group and volumes that
will be remote before taking the snapshot. Although the interface allows you to create volumes and
snapshots as you go, that may be a distraction at the time a crucial snapshot is needed.

Getting there

This procedure takes you to the New Remote Snapshot window where remote copy procedures start.
copy" on page 9.
P4000 Remote Copy user guide 17