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Chapter 1 - Overview and Forecast 4. A functioning Windows Active Directory domain. 5. A functioning Domain Naming Service (DNS). The core changes in 5.x are focused upon replacing the majority of the business server applications that support Inform CAD. Note: The following version specific overview includes information on components approved for virtualization. Virtualization of components is described in greater detail in Section 18. 2.1.1 INFORM CAD DATABASE SERVER OVERVIEW The Production (live) Database Server operates as a file server and a data repository for both setup and operational data. The file server function serves as a file repository for workstations and interfaces; files are synchronized at the launch of workstation and interface applications in order to ensure that the latest files are being used. This facilitates initial installation, upgrades and updating of data stored in file formats (routing files, shape files and the like). Workstations and interfaces also synchronize their time with the Database Server (refer to Section 6 for additional information). SQL Server provides data storage in the form of six (6) databases (4.5 and later) as well as server -based architecture components in the form of stored procedures. Examples of server -based functions include timers and warnings as managed by the CAD Monitor function in the form of stored procedures. Inform CAD 5.7 includes one component that has been designed to operate on the Production Database Server — the Inform Event Service. Inform CAD 5.7 also includes VisiNet Service in Services windows service that can be hosted on one or more Inform CAD Business Servers. VisiNet Service in Services windows service executes and manages one or more service features for Inform CAD. In its current design, Inform CAD requires a functioning Production Database Server in order for workstations to operate. Therefore, the Production Database Server is recommended to operate on a fault -tolerant server. In lieu of full Fault -Tolerance other high availability technologies can be utilized such as VMWare (High Availability (HA), Fault Tolerance (FT) and Site Recovery Manager (SRM) or other approved hypervisor technologies. Additionally, Areserve is a TriTech approved solution for disaster recovery (DR) and Hot Standby (HSB) to replicate databases and provide partially automated failover. 2.1.2 INFORM CAD 5.7 COMPONENT OVERVIEW Since Inform CAD 5.3 the functionality of TCP socket -based Inform CAD Communication Service was replaced with WCF (Windows Communication Foundation) -based inform Event Service. This is a mission critical component for the system. The contents of this material are confidential and proprietary to TriTech Software Systems, Inc. and may not be reproduced, published or disclosed to others without the prior written consent of TriTech Software Systems, Inc. ©2015 TriTech Software Systems