APPENDIX B

File Fragmentation Cost Analysis

Fragmentation is a costly affair. Fragmentation can slow a computer down within a week. The speed with which performance degrades is dependent upon the number of users, the type of applications being run and the frequency of adding, changing and deleting files. Typically, a system experiences a noticeable slow-down in performance within the first week of normal operation after a complete backup and restore or other defragmentation. This performance drain averages 10% to 15%.

How much does this performance drain cost? There are no set figures for all sites, obviously, so you have to calculate the cost of fragmentation based on conditions at your own site. The following worksheet is designed to give you a good ballpark estimate of the cost of fragmentation on your system.

The figures I have given in this worksheet are typical, based on normal industry practice. If you know what your figures are and they differ from mine, by all means use yours.

This is available here in Microsoft Excel® format. Using Excel (v5.0 or higher) you can view and complete your Fragmentation Cost Analysis by configuring Excel to launch as a helper application for Netscape or you can download a copy of the worksheet and complete it locally.

If you don't have Excel, you can download a free Microsoft Excel Viewer from Microsoft.

Download the Cost Analysis Worksheet

Download the Microsoft Excel Viewer.

[PREVIOUS PAGE][RETURN TO TOP][TABLE OF CONTENTS][NEXT PAGE]