Veritas FlashSnap Point-In-Time Copy Solutions 5.0 AdministratorÆs Guide, HP-UX 11i v3, First Edition, May 2008

Chapter
1
Point-in-time
copy solutions
This chapter introduces the point-in-time copy solutions that you can
implement using the Veritas FlashSnap
TM
technology.
Note: The FlashSnap feature requires a separate license.
Veritas FlashSnap offers a flexible and efficient means of managing business
critical data. It allows you to capture an online image of actively changing data
at a given instant: a point-in-time copy. You can perform system backup,
upgrade and other maintenance tasks on point-in-time copies while providing
continuous availability of your critical data. If required, you can offload
processing of the point-in-time copies onto another host to avoid contention for
system resources on your production server.
Two kinds of point-in-time copy solution are supported by Veritas FlashSnap:
■ Volume-level solutions are made possible by the persistent FastResync and
Disk Group Split/Join features of Veritas Volume Manager. These features
are suitable for implementing solutions where the I/O performance of the
production server is critical.
The persistent FastResync and Disk Group Split/Join features are described
in “Persistent FastResync of volume snapshots” on page 10 and “Disk group
split/join” on page 11.