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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Greetings all,</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> I’ve
spent a good deal of time searching the Info-Cyrus archives (and various googled
articles) to identify the recommended ways to improve Cyrus availability and
reduce disaster recovery time. The two main approaches appear to be Cyrus
replication and file system replication using DRBD and Heartbeat/Pacemaker/RHCS.
Cyrus replication appears to be the preferred approach, since with DRBD a
corrupted file system on the master would be replicated on the slave. I
have a few questions.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal style='margin-left:.25in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>- Am I missing something? Is
there a third approach that is better than Cyrus or file system replication?</span></font></p>
<p class=MsoNormal style='margin-left:.25in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>- Cyrus replication seems to be used
in conjunction with manual failover procedures. Is anyone using
Heartbeat, etc. with Cyrus replication?</span></font></p>
<p class=MsoNormal style='margin-left:.25in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>- We have three Cyrus servers, each
with a single large mailstore. Would there be a significant advantage to
splitting them into multiple smaller mailstores? We’re using
Perdition but not Murder / Aggregator.</span></font></p>
<p class=MsoNormal style='margin-left:.25in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>- Are there any situations where
DRBD would be preferred to Cyrus replication?</span></font></p>
<p class=MsoNormal style='margin-left:.25in'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thank you for your time.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>John</span></font></p>
<p><font size=2 color="#002878" face="Arial Black"><span style='font-size:10.0pt;
font-family:"Arial Black";color:#002878;letter-spacing:1.0pt'>John Simpson </span></font><br>
<font size=2 color="#5f5f5f" face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:#5F5F5F;letter-spacing:1.0pt'>Senior Software Engineer,
I. T. Engineering and Operations</span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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