<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40"> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)"> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="address"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PostalCode"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="State"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City"/> <o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="Street"/>  <style>  </style>  </head> <body lang=EN-US link=blue vlink="#606420"> <div class=Section1> <a name="">Overview: I currently run a RedHat Cluster of 8 JBoss web servers sharing data via a Global File System. My company is looking to gain redundancy for our RHCS GFS cluster due to problems with GFS kernel panics. During periods of network instability the GFS mounted volumes on the cluster will oops (Most likely due to DLM failures) and panic the majority of the machines in the cluster. This of course dissolves the quorum and takes the entire thing down. We need some redundancy with GFS.<o:p></o:p></a> <o:p> </o:p> My goal is to have a second cluster completely separate from the first with the GFS data replicated in an active / active configuration. We will have our F5 Load Balancers divide traffic to both clusters evenly. In researching replication software to accomplish this goal I came across BakBone’s NetVault Replicator. Does anybody have experience with real-time replication via this product? Any caveats to using this for bi-directional replication of two GFS volumes?<o:p></o:p> Jeremy Carroll Systems Engineer Total Administrative Services Corporation <st1:address tabIndex="0" style="BACKGROUND-POSITION: left bottom; BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x" w:st="on"><st1:address w:st="on"><st1:Street w:st="on">2302 International Lane</st1:Street></st1:address> <st1:place w:st="on"><st1:City w:st="on">Madison</st1:City>, <st1:State w:st="on">WI</st1:State> <st1:PostalCode w:st="on">53704-3140</st1:PostalCode></st1:place></st1:address> 800-422-4661, Extension 4247 608-241-1900, Extension 4247 608-663-9605, Fax <a href="mailto:jeremy@tasconline.com">jeremy@tasconline.com</a> <img border=0 width=165 height=65 id="_x0000_i1025" src="cid:image001.jpg@01C7E31D.BBBD71A0"> This electronic message and any attachments hereto (this "email) may contain information that is privileged, confidential or otherwise protected from disclosure. The information is intended for the use of the addressee(s) only. If the reader of this email is not the intended recipient, any disclosure, copy, distribution or use of the contents of attachments to this email is prohibited. If you have received this email in error, please notify us immediately by reply email, then delete this email and destroy any printed copies. It is the sole responsibility of the recipient to ensure that this email is free from virus or other defect, which may adversely affect the recipient's business operations. We disclaim any liability for any damages, including special and incidental or consequential damages, and any related costs or expenses arising in any way whatsoever from the receipt or use of this email. Thank you.<o:p></o:p> <o:p> </o:p> </div> </body> </html>