CA Threat Manager r8.1 - Upgrade from eTrust Antivirus, eTrust PestPatrol, eTrust Secure Content Manager - 1 User - Multilingual - Product only. Software type: Upgrade, License quantity: 1 user(s). Minimum hard disk space (server): 10240 MB, Minimum hard disk space (client computer): 256 MB, Minimum RAM (server): 1024 MB. Compatible operating systems: - Windows NT 4.0, SP6A + - Windows 2000 - Windows 2000 Server - Windows 2003 Server