VERITAS File System 4.1 Administrator's Guide

Chapter 5 89
5 Storage Checkpoints
Storage Checkpoints are a feature of the VERITAS File System (VxFS ) provide point-in-time
images of file system contents. These frozen images of VxFS file systems can be used in a
variety of applications such as full and incremental online backups, fast error recovery, and
product development testing. Storage Checkpoint replicas of real time databases can also be
used for decision support and an assortment of database analyses.
This chapter discusses the following topics:
• “What is Storage Checkpoint ?” on page 90
• “How a Storage Checkpoint Works” on page 92
• “Types of Storage Checkpoints” on page 95
— “Data Storage Checkpoints” on page 95
— “Nodata Storage Checkpoints” on page 95
— “Removable Storage Checkpoints” on page 95
— “Non-mountable Storage Checkpoints” on page 96
• “Storage Checkpoint Administration” on page 97
— “Creating a Storage Checkpoint” on page 98
— “Removing a Storage Checkpoint” on page 99
— “Accessing a Storage Checkpoint” on page 99
— “Converting a Data Storage Checkpoint to a Nodata Storage Checkpoint” on page 101
• “Space Management Considerations” on page 109
• “File System Restore From Storage Checkpoints” on page 110
• “Storage Checkpoint Quotas” on page 115