DFU I2.6

DFU I2.6

DFU Disk / File Utilities for OpenVMS VAX and Alpha

Revision Information: This manual supersedes V2.5

Date: October 1998

Operating System: OpenVMS V6.2 thru 7.2

Note: Part of the Freeware Software


OpenVMS Freeware for VAX and AXP Systems

The OpenVMS Freeware CD-ROM contains free software tools and utilities to aid software developers in creating applications and managing and using OpenVMS systems.

Many of these tools are popular packages already widely known and in use, while others are internally developed Digital tools our engineers are making available to our OpenVMS customers. For example, the OpenVMS Freeware CD-ROM includes Bliss-32 for OpenVMS VAX, Bliss-32 for OpenVMS AXP, and Bliss-64 for OpenVMS AXP.

Disclaimer on Testing, Quality, and Licensing

The OpenVMS Freeware for VAX and AXP Systems CD-ROM is provided "AS IS" without warranty. Digital imposes no restrictions on its distribution, nor on the redistribution of anything on it. Be aware, however, that some of the packages on the CD-ROM may carry restrictions on their use imposed by the original authors. Therefore, you should carefully read the documentation accompanying the products.

Digital Equipment Corporation is providing this software free of charge and without warranty. Included in the [FREEWARE] directory on this CD are the GNU software licenses. Unless otherwise stated in sources or source packages, the GNU licenses cover all software supplied on this CD.

Digital makes no claims about the quality of this software. It is provided to the customer as a free service.

Copyright ©1998


Contents


Chapter 1
Introduction

The Disk / File utilities is a tool developed to help finding and solving disk , directory and file problems. The usage of low-level VMS-I/O features have resulted in a powerfull and high-performance utility. Also, DFU provides many features which are not available with normal DCL commands.

DFU supports all types of disk sets which comply to the VMS ODS-2 standard such as volume sets, stripe sets, shadow sets and RAID sets, and combinations of these. Spiralog disks are NOT supported

DFU also supports the new Extended File Specifications (also known as ODS-5) which is introduced in VMS 7.2 (Alpha-only).

DFU is fully Year-2000 compliant.

1.1 Support on DFU

Although there is no official support on DFU you may mail questions/remarks/bug reports to the author via internet at:

ton.dorland@digital.com.

1.2 General description

DFU provides the following functions (in alphabetical order) :