Windows Home Server 2011 (codenamed "Vail") is a home server operating system by Microsoft designed for small office/home offices and homes with multiple connected PCs to offer protected file storage, file sharing, automated PC backup, remote access, and remote control of PC desktops. It was released on 6 April 2011 following the release of Power Pack 3 for its aging predecessor Windows Home Server. Microsoft has announced that Windows Home Server 2011 will be the last Windows Home Server release. Windows Home Server will be succeeded by Windows Server 2012 Essentials.