Hello All: I've configured a few instances of RedHat/CentOS clustering. For basic services such as web, dns, and LDAP it seems to work well. My basic configuration just uses the core services and a DRBD volume for the shared storage. We have some existing LifeKeeper clustered systems. I don't know much about them except that they use a similar hearbeat/shared storage solution. Has anyone here used both and can mention some pros/cons of each? In particular, is there anything that LifeKeeper provides that cannot be replicated via the RedHat/CentOS solution? Thanks all for any input.