Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

output is sent to the screen, but you can redirect it to a file using standard UNIX
redirection.
See the Veritas Volume Manager Administrator's Guide.
About cluster functionality (optional)
VxVM includes an optional, separately licensable clustering feature, known as
Cluster Volume Manager, that enables VxVM to be used in a cluster environment.
With the clustering option, VxVM supports up to 16 nodes per cluster.
See the Veritas Volume Manager Administrator's Guide.
About Veritas Volume Replicator (optional)
Veritas Volume Replicator (VVR) is an optional, separately licensable feature of
VxVM. VVR is a data replication tool designed to maintain a consistent copy of
application data at a remote site. It is built to contribute to an effective disaster
recovery plan. If the data center is destroyed, the application data is immediately
available at the remote site, and the application can be restarted at the remote
site.
VVR works as a fully integrated component of VxVM. VVR benefits from the
robustness, ease of use, and high performance of VxVM and, at the same time,
adds replication capability to VxVM. VVR can use existing VxVM configurations
with some restrictions. Any application, even with existing data, can be configured
to use VVR transparently.
See the Veritas Volume Replicator documentation.
How Veritas File System works
Veritas File System (referred to as VxFS) is an extent-based, intent logging file
system intended for use in UNIX environments that deal with large volumes of
data and that require high file system performance, availability, and manageability.
VxFS also provides enhancements that make file systems more viable in database
environments.
The VxFS file system included in this product has all the features of the optional
HP OnlineJFS file system product available from HP-UX; however, VxFS also
includes Quick I/O, Storage Checkpoints, and Storage Rollback. In this document,
the terms “VxFS” and “HP OnlineJFS” are synonymous in all contexts except in
relation to Quick I/O, Storage Checkpoints, and Storage Rollback.
The following sections provide a brief overview of VxFS concepts and features
that are relevant to database administration.
31Introducing Veritas Storage Foundation for Oracle
How Veritas File System works