группа ролей администраторов(A universal security group with administrative rights assigned to it. These administrative rights are specified by built-in management roles, which are part of the role-based access control (RBAC) permissions model in Exchange Server 2010)
локальная группа администраторов(The group of users who have permission to perform administration tasks on the local server computer. The permissions for this group are set by using the administration tools for the operating system)