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Indexing: Overview

The SnapProtect software creates an index of the data that it backs up, from the data's metadata (characteristics), such as the name of a file, or the subject in an e-mail. Using an index during browse, find, analytics, restore and reporting operations improves performance by quickly supplying information about backed-up files. Just as data is backed up to a storage library, the index is also backed up to a storage library. The index is composed of multiple files that together constitute a database.

This diagram illustrates the architecture of Indexing:

Terminology

Index (or catalog) A database containing the metadata for backed-up data. Created during the backup process and used by find, browse, restore, and other operations.
Index Directory The local disk area on a MediaAgent where the log files and index database are kept.