ERAS works as a service, and therefore requires a Microsoft Windows NT-based operating system (NT4 SP6, 2000, XP, 2003, Vista, 7, or 2008). Although the Microsoft Windows Server Edition is not necessary for ERAS to work, we recommend installing ERAS on server-based operating systems for smooth operation. A computer with ERAS installed on it should always be online and accessible via computer network by:


· Clients (usually workstations)
· PC with ERA Console
· Other instances of ERAS (if replicated)


NOTE: ESET Remote Administrator 4 fully supports installation over older versions (3.x, 2.x, 1.x) including data migration.