<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML ><HEAD ><TITLE >UPS HOWTO</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="NEXT" TITLE="Introduction" HREF="introduction.html"></HEAD ><BODY CLASS="article" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="ARTICLE" ><DIV CLASS="TITLEPAGE" ><H1 CLASS="title" ><A NAME="AEN2" ></A >UPS HOWTO</H1 ><DIV CLASS="authorgroup" ><A NAME="AEN4" ></A ><H3 CLASS="author" ><A NAME="AEN5" >Eric Steven Raymond</A ></H3 ><DIV CLASS="affiliation" ><SPAN CLASS="orgname" ><A HREF="http://www.catb.org/~esr/" TARGET="_top" >Thyrsus Enterprises</A ><BR></SPAN ></DIV ><H3 CLASS="author" ><A NAME="AEN12" >Nick Christenson</A ></H3 ></DIV ><DIV CLASS="revhistory" ><TABLE WIDTH="100%" BORDER="0" ><TR ><TH ALIGN="LEFT" VALIGN="TOP" COLSPAN="3" ><B >Revision History</B ></TH ></TR ><TR ><TD ALIGN="LEFT" >Revision 2.2</TD ><TD ALIGN="LEFT" >2007-05-22</TD ><TD ALIGN="LEFT" >Revised by: esr</TD ></TR ><TR ><TD ALIGN="LEFT" COLSPAN="3" >Minor update with more info about battery types.</TD ></TR ><TR ><TD ALIGN="LEFT" >Revision 2.1</TD ><TD ALIGN="LEFT" >2005-09-28</TD ><TD ALIGN="LEFT" >Revised by: esr</TD ></TR ><TR ><TD ALIGN="LEFT" COLSPAN="3" >Link fixes.</TD ></TR ><TR ><TD ALIGN="LEFT" >Revision 2.0</TD ><TD ALIGN="LEFT" >2005-08-15</TD ><TD ALIGN="LEFT" >Revised by: esr</TD ></TR ><TR ><TD ALIGN="LEFT" COLSPAN="3" >Merged in material by Nick Christenson.</TD ></TR ><TR ><TD ALIGN="LEFT" >Revision 1.3</TD ><TD ALIGN="LEFT" >2005-08-17</TD ><TD ALIGN="LEFT" >Revised by: esr</TD ></TR ><TR ><TD ALIGN="LEFT" COLSPAN="3" >Fix a bad link.</TD ></TR ><TR ><TD ALIGN="LEFT" >Revision 1.2</TD ><TD ALIGN="LEFT" >2004-10-28</TD ><TD ALIGN="LEFT" >Revised by: esr</TD ></TR ><TR ><TD ALIGN="LEFT" COLSPAN="3" >Remove a bad link.</TD ></TR ><TR ><TD ALIGN="LEFT" >Revision 1.1</TD ><TD ALIGN="LEFT" >2004-02-21</TD ><TD ALIGN="LEFT" >Revised by: esr</TD ></TR ><TR ><TD ALIGN="LEFT" COLSPAN="3" >Add a little deployment advice, and stuff on other technologies.</TD ></TR ><TR ><TD ALIGN="LEFT" >Revision 1.0</TD ><TD ALIGN="LEFT" >2003-10-07</TD ><TD ALIGN="LEFT" >Revised by: esr</TD ></TR ><TR ><TD ALIGN="LEFT" COLSPAN="3" >Initial release.</TD ></TR ></TABLE ></DIV ><DIV ><DIV CLASS="abstract" ><A NAME="AEN51" ></A ><P ></P ><P > 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. </P ><P ></P ></DIV ></DIV ><HR></DIV ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT >1. <A HREF="introduction.html" >Introduction</A ></DT ><DD ><DL ><DT >1.1. <A HREF="introduction.html#purpose" >Why this document?</A ></DT ><DT >1.2. <A HREF="introduction.html#newversions" >New versions of this document</A ></DT ><DT >1.3. <A HREF="introduction.html#license" >License and Copyright</A ></DT ></DL ></DD ><DT >2. <A HREF="x71.html" >An Overview of Power Protection</A ></DT ><DD ><DL ><DT >2.1. <A HREF="x71.html#surge" >Surge suppressors</A ></DT ><DT >2.2. <A HREF="x71.html#conditioners" >Line Conditioners</A ></DT ><DT >2.3. <A HREF="x71.html#AEN112" >Uninterruptible Power Supplies</A ></DT ></DL ></DD ><DT >3. <A HREF="x142.html" >UPS Basics</A ></DT ><DD ><DL ><DT >3.1. <A HREF="x142.html#AEN144" >How To Select A UPS</A ></DT ><DT >3.2. <A HREF="x142.html#AEN173" >Deploying your UPS and other devices: the total picture</A ></DT ><DT >3.3. <A HREF="x142.html#AEN187" >Software Assistance</A ></DT ><DT >3.4. <A HREF="x142.html#AEN208" >Preparing Your System For Auto-Reboot</A ></DT ></DL ></DD ><DT >4. <A HREF="testing.html" >Testing Your UPS</A ></DT ><DT >5. <A HREF="maintaining.html" >Maintaining Your UPS</A ></DT ><DD ><DL ><DT >5.1. <A HREF="maintaining.html#AEN230" >Service contracts</A ></DT ><DT >5.2. <A HREF="maintaining.html#AEN233" >Extending battery life</A ></DT ><DT >5.3. <A HREF="maintaining.html#AEN236" >Recalibrating Your UPS</A ></DT ><DT >5.4. <A HREF="maintaining.html#AEN241" >Replacing Your Batteries</A ></DT ><DT >5.5. <A HREF="maintaining.html#AEN254" >Buying Batteries</A ></DT ></DL ></DD ><DT >6. <A HREF="x266.html" >Vendor information</A ></DT ><DT >7. <A HREF="x381.html" >Bibliography</A ></DT ><DT >8. <A HREF="x391.html" >Acknowledgements and Related Resources</A ></DT ></DL ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" > </TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="introduction.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" > </TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Introduction</TD ></TR ></TABLE ></DIV ></BODY ></HTML >