HP 3PAR InForm OS 3.1.1 CLI Administrator's Manual

When you resynchronize a physical copy, the system copies changes from one volume in the
physical copy pair to the other.
• To resynchronize a physical copy, issue the createvvcopy -r <destination_VV>
command, where -r <destination_VV> is the volume to be resynchronized with its parent
volume. The snapshot is retained for quick resynchronizing and the parent-copy relationship
is also retained.
Resynchronizing a Group of Physical Copies
Just as groups of physical copies can be created for a list of virtual volumes, those physical copies
can also be resynchronized.
• To resynchronize a group of physical copies, issue the creategroupvvcopy -r
<destination_VV> command, where -r <destination_VV> is the volume to be
resynchronized with its parent volume.
Snapshots of the parent volume must have been saved during their creation (using the -s
option) in order to resynchronize the volumes.
Promoting a Physical Copy
Over time, physical copies and their base volumes can change as data is written to each. At some
point the association between the two volumes may no longer be relevant. The association between
a physical copy and a base volume is broken by promoting the physical copy back to the base
volume.
• To promote a physical copy back to a base volume, issue the promotevvcopy
<copy_name>|set:<set_name> command, where:
◦ <copy_name> is the name of the physical copy being promoted.
◦ <set_name> is the name of the physical copy set being promoted.
Snapshots and Domains
NOTE: Virtual domains require the Virtual Domains Software license. Contact your local HP
representative for further details.
As with standard systems, virtual copies and physical copies can also be created in systems using
virtual domains. Domain snapshot creation and modification does not differ from snapshot creation
and modification in systems not using Domains. Domain snapshot creation and modification is
limited to Super and Edit users belonging to the all domain and Edit users belonging to a
specified domain. Snapshots inherit the domain of their parent volumes.
• Virtual copies can be:
Created. See “Creating a Virtual Copy” (page 100) for instructions.◦
◦ Promoted. See “Promoting a Virtual Copy” (page 101) for instructions.
◦ Modified. See “Modifying a Virtual Copy” (page 102) for instructions.
◦ Removed. See “Removing a Virtual Copy” (page 102) for instructions.
• Physical copies can be:
Created. See “Creating a Physical Copy” (page 103) for instructions.◦
◦ Resynchronized. See “Resynchronizing a Physical Copy” (page 104) for instructions.
◦ Promoted. See “Promoting a Physical Copy” (page 105) for instructions.
Snapshots and Domains 105