Veritas FlashSnap Point-In-Time Copy Solutions 5.0.1 Administrators Guide, HP-UX 11i v3, First Edition, November 2009

suitable for implementing solutions where the I/O performance of the
production server is critical.
See “Persistent FastResync of volume snapshots” on page 14.
See “Disk group split/join” on page 15.
■ File system-level solutions use the Storage Checkpoint feature of Veritas File
System. Storage Checkpoints are suitable for implementing solutions where
storage space is critical for:
■ File systems that contain a small number of mostly large files.
■ Application workloads that change a relatively small proportion of file
system data blocks (for example, web server content and some databases).
■ Applications where multiple writable copies of a file system are required
for testing or versioning.
See “Storage Checkpoints” on page 15.
The FlashSnap license also supports the Veritas FlashSnap Agent for Symmetrix.
See “Veritas FlashSnap Agent for Symmetrix” on page 16.
Applications of point-in-time copy solutions
The following typical activities are suitable for point-in-time copy solutions
implemented using Veritas FlashSnap:
■ Data backup—Many enterprises require 24 x 7 data availability. They cannot
afford the downtime involved in backing up critical data offline. By taking
snapshots of your data, and backing up from these snapshots, your
business-critical applications can continue to run without extended downtime
or impacted performance.
■ Decision support analysis and reporting—Operations such as decision support
analysis and business reporting may not require access to real-time
information. You can direct such operations to use a replica database that you
have created from snapshots, rather than allow them to compete for access
to the primary database. When required, you can quickly resynchronize the
database copy with the data in the primary database.
■ Testing and training—Development or service groups can use snapshots as
test data for new applications. Snapshot data provides developers, system
testers and QA groups with a realistic basis for testing the robustness, integrity
and performance of new applications.
■ Database error recovery—Logic errors caused by an administrator or an
application program can compromise the integrity of a database. You can
recover a database more quickly by restoring the database files by using Storage
Point-in-time copy solutions
Applications of point-in-time copy solutions
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