Hi, I am in the process of setting up a two node cluster. Since I am setting up Squid on the private side. I am looking into how data is stored. Basically I am trying to detemine what data can be shared between instances of Squid. Say a host opens a connection to a remote location and collects all kinds of state information and that squid goes down. will that mean that all information is kept? Can a download that is broken (due to the squid going down) halfway, still continue while happily using the other (which has the same IP) Are there any specific things I need to look in to? I intend to set up a cluster consisting of the following GlassFish PostgreSQL Nagios Postfix Squid Heartbeat Subversion Named DHCPd TFTPd Apache HTTPd DRBD (dual primary with either GFS2 or OCFS2) ldirectord or keepalived (all traffic is being balanced between the two real servers and both nodes should be active) It will probably run on either Gentoo or Centos x64 What are the important thing in regard to squid that I need to take special attention to. Things I can imagine IPaddress sharing Storage (cache) sharing Synchronization of configuration Sharing of logon data to squid (I intend to use form based authentication for squid) I am aware of the fact that the majority of this setup is in no way relevant to squid, but it may impact it (I can not yet determine that) I am especially interested in anything that is relevant to impact in regard to availability, performance and load balancing Any help is greatly appreciated!! Regards, Serge Fonville