Veritas Storage Foundation for DB2 includes the following products:

• Veritas Volume Manager (VxVM)

  A disk management subsystem that supports disk striping, disk mirroring, and simplified disk management for improved data availability and performance.

• Veritas File System (VxFS)

  A high-performance, fast-recovery file system that is optimized for business-critical database applications and data-intensive workloads. VxFS offers online administration, letting you perform most frequently scheduled maintenance tasks (including online backup, resizing, and file system changes) without interrupting data or system availability. VxFS also provides support for large file systems (of more than 8 exabytes in a 64-bit environment) and large files (in the exabyte range in a 64-bit environment).

  Veritas File System offers the following performance-enhancing features that are of particular interest in a database environment:

  • Veritas Concurrent I/O improves the performance of regular files on a VxFS file system without the need for extending namespaces and presenting the files as devices. This simplifies administrative tasks and allows relational databases (such as DB2), which do not have a sequential read/write requirement, to access files concurrently.

  • A feature of the Enterprise Edition, VxFS Storage Checkpoint technology lets you create a point-in-time image of a file system. Storage Checkpoints are treated like any other VxFS file system and can be created, mounted, unmounted, and removed with VxFS and Veritas Storage Foundation administrative utilities.

• Veritas Storage Mapping

  Storage Mapping, a feature of the Enterprise Edition, lets you map DB2 tablespace containers to physical devices and display storage object I/O statistics. Both storage object I/O statistics and the storage structure can be displayed using either the vxstorage_statscommand or the Veritas Storage Foundation GUI.

• Veritas Database FlashSnap

  Database FlashSnap, a feature of the Enterprise Edition, lets you create, resynchronize, and reverse resynchronize volume snapshots for databases. The snapshots can be used on a second host. Also, database administrators can perform these tasks without root privileges. Database FlashSnap tasks may be performed through the Veritas Storage Foundation GUI or the command line interface.

• Database Dynamic Storage Tiering

  Database Dynamic Storage Tiering, a feature of the Enterprise Edition, enables you to manage your data so that less-frequently used data can be moved to slower, less expensive disks, allowing frequently-accessed data to be stored on the faster disks for quicker retrieval.

• Veritas Enterprise Administrator

  Veritas Enterprise Administrator (VEA) is the infrastructure that allows you to access Veritas Storage Foundation for DB2, Veritas Volume Manager, and Veritas File System information and features through the GUI.