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

Contents
Chapter 1 Point-in-time
copy solutions
Applications of point-in-time copy solutions ....................................................8
Point-in-time copy scenarios ....................................................................... 9
Software used in point-in-time copy scenarios ................................................. 9
Persistent FastResync of volume snapshots ...........................................10
Instant volume snapshots ..........................................................................11
Disk group split/join ....................................................................................11
Storage Checkpoints ....................................................................................12
Implementing point-in time copy solutions on a primary host ...................13
Implementing off-host point-in-time copy solutions ....................................15
Data integrity in volume snapshots ..........................................................20
Choices for snapshot resynchronization .................................................20
Chapter 2 Setting up volumes for instant snapshots
Additional preparation activities ......................................................................22
Preparing a volume for instant snapshot operations ....................................23
Considerations for placing DCO plexes ....................................................25
Creating a volume for use as a full-sized instant snapshot ..........................27
Creating a shared cache object ..........................................................................28
Tuning the autogrow attributes ................................................................29
Chapter 3 Online database backup
Making a backup of an online database on the same host ............................32
Making an off-host backup of an online database ..........................................35
Chapter 4 Off-host cluster file system backup
Mounting a file system for shared access ........................................................43
Using off-host processing to back up cluster file systems ............................43
Reattaching snapshot plexes .....................................................................46
Chapter 5 Decision support
Creating a replica database on the same host .................................................48
Creating an off-host replica database ...............................................................51