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Lund Performance Solutions


Introduction
Welcome to De-Frag/X, an exciting MPE/iX tool from Lund Performance Solutions. De-Frag/X is an extremely helpful and timely product that measures up to the standards you have come to expect from Lund Performance Solutions. De-Frag/X is available for MPE/iX versions 5.5 and beyond.


This brief User’s Guide is intended to provide a clear and concise overview of the features and benefits of the De-Frag/X product. On-line help also exists for your convenience. To access the De-Frag/X on-line help sub-system, simply type H or a question mark ( ? ) at the De-Frag/X> prompt. See "Reference Materials" for more defragmentation information.


Chapter 1 lays out the advantages of using De-Frag/X, any special precautions you should take before running De-Frag/X, and where to look for product support. "Fragmentation Concepts" addresses the types of fragmentation issues commonly found in the MPE/iX world. If you have any doubt that fragmentation issues affect system performance, simply analyze your system's performance, perform defragmentation and re-analyze your system's performance. You will then be able to objectively quantify the effect of disk fragmentation on your system's performance.

Overview

Lund Performance Solutions is in the business of providing software, consulting and training in the Hewlett-Packard system performance arena. As such, we have examined literally hundreds of MPE/iX systems. While it is true that there have been significant strides made in the I/O performance of MPE systems (MPE V systems have significant I/O bottleneck issues), it is not true that disk I/O bottlenecking is a thing of the past. A purist may say that all I/O issues on MPE/ iX systems disappear with sufficient main memory resources. This may be true in the theoretical realm but in practical application this concept isn't entirely true. As MPE systems have grown, the application environment has grown enormously. It is not uncommon to see systems with millions and millions of records of application data. We have seen systems with as many as 100 disk devices. As such, the ratio between disk storage and main memory has actually increased significantly. Therefore, it is becoming increasingly important that MPE/iX system managers maintain a "tighter ship" from the perspective of I/O performance.

Advantages

Some of the advantages of using De-Frag/X center around the fact that, to date, Hewlett-Packard does not provide the ability to perform similar functionality for MPE/iX systems. MPE/iX systems, as of release 5.0 of the operating system, will have available a CONTIGVOL command in the VOLUTIL utility program. This command only addresses issues of contiguous free space, and has some limitations at that. It is by no means a comprehensive fragmentation utility product like De-Frag/X.


Although De-Frag/X can perform its functions while users are actively engaged in application work, you may find some files that users have opened for work may very well be those files which require the most maintenance from a defragmentation standpoint. If this is the case, there is no other option than to bring those users off the system, back the files up and then perform the defragmentation maintenance.

Special Precautions

While we at Lund Performance Solutions have developed the De-Frag/X product with the highest regard for the integrity of user data, it is very important to understand that we are performing tasks which are considered privileged in nature and are not available through Hewlett-Packard supported file system interfaces. Because of this, (and we cannot stress it enough,) be sure to perform system backups before executing any of the data-intrusive De-Frag/X commands. Additionally, we recommend that you run the Hewlett-Packard provided utility, FSCHECK.MPEXL.TELESUP, both before and after performing any of the data-intrusive commands. This program will analyze and report the status of the file system and any problems associated with file labels, etc.


NOTE You should run FSCHECK when NO other users or jobs are running.


To encourage this practice of running FSCHECK first, De-Frag/X programmatically restricts data- intrusive functions if FSCHECK was not run first. (You may override this restriction by using the RESET FSCHECK statement before executing any of the data intrusive-commands). Please see "FSCHECK - Questions and Answers" for more information regarding FSCHECK.

Product Support

Lund Performance Solutions Main Offices

When you purchase support from Lund Performance Solutions, you benefit from the knowledge and experience of our technical support team. We are glad to help you interpret data and resolve performance issues. Our contracted product support entitles you to receive timely updates, bug fixes, documentation and direct technical support.
Postal Address
Lund Performance Solutions
240 2nd Avenue SW
Albany OR 97321 USA
Internet URL
Visit the Lund Performance Solutions website at http://www.lund.com/.
Telephone Number
For customer and technical support, call (541) 812-7600, Monday through Friday during the hours of 8:00 A.M., to 5:00 P.M., Pacific time, excluding holidays.
Fax Number
Transmit fax messages to (541) 812-7611.
E-mail Addresses
Send e-mail messages to:


  • Sales Team
  • info@lund.com
  • Technical Support Team
  • support@lund.com
  • Documentation Team
  • documentation@lund.com
  • Certified Trainers
  • lti@lund.com
  • Consulting Team
  • lcs@lund.com


    Lund Performance Solutions Sales Team

    Lund Performance Solutions’ professional sales team is available to answer your sales and customer support questions Monday through Friday during the hours 8:00 A.M., to 5:00 P.M., Pacific time, excluding major holidays.


    Please contact your sales representative for information about the latest Lund Performance Solutions products, the Lund Software Subscription Plan, upgrade options and prices, and more.

    Lund Performance Solutions Technical Support Team

    At Lund Performance Solutions, we are working hard to provide you with intuitive software products. Additionally, we try to provide superior online and printed documentation. However, should you find yourself with a technical question that you cannot answer with the tools provided, please contact our technical support team.


    NOTE You must be a registered user to access Lund Performance Solutions’ support services. Lund Performance Solutions’ support services are subject to Lund Performance Solutions’ prices, terms, and conditions in place at the time the services are used.


    E-mail Tech Support
    Ask questions and receive detailed answers from the technical support team by sending an e- mail message to support@lund.com. Please include the product serial number with your question. You will receive a reply by e-mail.
    Telephone Tech Support
    You can reach the technical support team by phone at (541) 812-7600, Monday through Friday during the hours 8:00 A.M., to 5:00 P.M., Pacific time, excluding major holidays. Emergency technical support is also available after hours, seven days a week.


    When you call, please be at your computer, have the product documentation in hand, and be prepared to provide the following information:
  • Product name and version number.
  • Type of computer hardware you are using.
  • Software version number of your operating system(s).
  • Exact wording of any messages that appear on your screen.
  • What you were doing when the problem occurred.
  • How you tried to solve the problem.
  • Lund Performance Solutions Documentation Team

    Lund Performance Solutions makes every effort to produce the highest quality documentation for our products, and we welcome your feedback. If you have comments or suggestions about our online Help or printed guides, send an e-mail message to documentation@lund.com or contact your account manager.

    Lund Training Institute Certified Trainers

    Lund Training Institute presents system performance training courses at their corporate training center in Oregon and at various locations across the United States and Canada throughout the year. The Certified Trainer Program is designed for trainers from all educational areas, including academia, consulting, and business.


    For information about Lund Training Institute or to receive an application, please review our website, send an e-mail message to lti@lund.com, or contact your account manager.

    Lund Consulting Services IT Consultants

    Lund Consulting Services, a division of Lund Performance Solutions, offers strategic IT solutions and expert support to a wide range of businesses. Our team of experienced IT professionals provides onsite consulting, training, and project management services to help businesses optimize their computer resources and achieve long-lasting success.


    For information about Lund Consulting Services, please review our website, send an e-mail message to lcs@lund.com, or contact your account manager.

    Product Documentation

    User’s Guide

    This document accompanies the De-Frag/X Disk Manager software as a guide for the new user and as a quick reference for experienced users. This guide assumes that you have a working knowledge of the MPE operating environment.

    Online Help System

    In the online Help system, you will find explanations of the many features of De-Frag/X Disk Manager as well as tips to guide you through the program’s basic functionality.

    Reference Materials

  • Taming the HP3000 - Volume 2. Copyright 1992 by Robert Lund, Albany, Oregon, USA


  • SOS/3000 Performance Advisor (for MPE/iX systems) User Manual. Copyright 1999-2000 by Lund Performance Solutions, Albany, Oregon, USA


  • For additional information regarding fragmentation problems and corrections, go to the Allegro web site: www.allegro.com/papers/fragmentation.html.

  • Lund Performance Solutions
    www.lund.com
    Voice: (541) 812-7600
    Fax: (541) 81207611
    info@lund.com
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