[This is pre-release documentation and subject to change in future releases. This topic's current status is: Milestone-Ready]

Topic Last Modified: 2010-03-26

Communications Server 2010 introduces a new server draining feature that enables you to take a server offline (for example, to apply software or hardware upgrades) without any loss of service to users. When you drain one server in a pool, it stops taking new connections and calls. These new calls and connections are routed through other servers in the pool. A server being drained allows its sessions on existing connections to continue until they naturally end. When all existing sessions have ended, the server is ready to be taken offline.

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Other Resources

Server Draining