UPS HOWTO

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UPS HOWTO
Eric Steven Raymond
Thyrsus Enterprises
Revision History
Revision 1.1 2004-02-21 Revised by: esr
Add a little deployment advice, and stuff on other technologies.
Revision 1.0 2003-10-07 Revised by: esr
Initial release.
An Uninterruptible Power Supply (UPS) is an important thing to have if you live in an area where power outages are at all common, especially if you run a mail/DNS/Web server that must be up 24/7. This HOWTO will teach you things you need to know to select a UPS intelligently and make it work with your open-source operating system.
Table of Contents
1. Introduction
1.1. Why this document?
1.2. New versions of this document
1.3. License and Copyright
2. An Overview of Power Protection
2.1. Surge suppressors
2.2. Line Conditioners
2.3. Uninterruptible Power Supplies
3. UPS Basics
3.1. How To Select A UPS
3.2. Deploying your UPS and other devices: the total picture
3.3. Software Assistance
3.4. Preparing Your System For Auto-Reboot
4. Maintaining Your UPS
4.1. Extending battery life
4.2. Recalibrating Your UPS
4.3. Replacing Your Batteries
4.4. Buying Batteries
5. Acknowledgements and Related Resources
Next
Introduction