From EMC Insignia:
Designed for small and midsize businesses and distributed enterprises protecting three or more servers, Retrospect Multi Server Edition runs on a Windows server and provides licenses to protect an unlimited number of networked Windows, Macintosh, Linux, and Solaris servers, desktops, and notebooks. Proven automated technology makes backups and restores easy, fast, and accurate. Multi Server protects against data loss due to viruses, newly installed software, user errors, damaged hardware, hardware upgrades, loss, or theft. Add-ons enable backup and restore of open files and business-critical applications, and complete disaster recovery.