[Zope-dev] Sharing session between different zope servers

Hi, We have 10+ Zope (version 2.7) servers ( on different machines). Right now each Zope server independently handles session management which means that if a Zope server fails the users on that Zope server do not get redirected to a functioning Zope server but get "stuck" on the failed Zope server. Is there any way to manage the session of all the zopes servers in a common place. Thanks in advance... Regards, Subish