<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="MS Exchange Server version 5.5.2653.12">
<TITLE>Newbie spread questions</TITLE>
</HEAD>
<BODY>
<P><FONT SIZE=2 FACE="Arial">Hi</FONT><FONT SIZE=2 FACE="Arial"> all</FONT><FONT SIZE=2 FACE="Arial">, I'm new to spread. I have the following questions:</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">i. From a reliability point of view, is it preferable to run spread in duplex mode or load-balanced mode, with say</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">2 collector servers?</FONT>
<BR><FONT SIZE=2 FACE="Arial">3 collector servers?</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">In duplex mode, we mirror the logs. say we have hourly logging. Hence if one machine goes down, the log harvesting program has to make a decision as to which files to harvest for that hour.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">However, in failover mode, we do not have the benefit of backup logging if the machine in rotation goes down and spread isn't smart enough to make the switch to the other one.</FONT></P>
<P><FONT SIZE=2 FACE="Arial">What has been your experience with either of the 2 modes?</FONT>
</P>
<P><FONT SIZE=2 FACE="Arial">ii.</FONT> <FONT SIZE=2 FACE="Arial"></FONT> <FONT SIZE=2 FACE="Arial">What sort of reliability does one get with spread? Are there any numbers you can point me to? Which high-traffic websites are running spread today?</FONT> </P>
</BODY>
</HTML>