To add based on the experience of running ClearCase in a 3 place multi-site setup in the past: * Mapping the repository into the filesystem requires drivers wh

To add based on the experience of running ClearCase in a 3 place multi-site setup in the past: * Mapping the repository into the filesystem requires drivers which can add a whole dimension of fun if one has to support a larger team over multiple platforms. * Doing replication is hard if you want uptimes of 99.9x% Yes, done right it can work great. But usability does not degrade gracefully when things break.