CygNet Software uses several different database storage technologies to store its data.
Most CygNet services store their data in service-related databases that use the Microsoft Extensible Storage Engine (ESE) data storage technology. These databases are collectively known as the DBS-based services, as they use the same database engine, and have similar configuration, security, backup, restore, recovery, and maintenance settings. See Data Storage for DBS-Based Services for more information. See Database Services for a general discussion of DBS-based services in CygNet.
The topics in this section provide information about the ESE data storage technology used by DBS-based services in CygNet, plus information about the utilities you can use to manage those database services.
The Value History Service (VHS) uses the same underlying data storage technology (ESE) as the other DBS-based services, but it is not considered a DBS-based service due to its unique archiving functionality. All VHS functionality (history point values storage, rollup, journal files, change queue, replication, data forwarding, recovery, utilities, and scripting interfaces, etc.) is fully supported in the ESE-based environment. See History Data for more information.
The Flow Measurement Service (FMS) for CygNet Measurement uses Microsoft SQL Server to store gas measurement data in most cases, except for instances where the internal database is used. See CygNet Measurement for more information.
The ARS has its own meter database file. The RSM, the CAS, and the Current Values Services (HSS, OPCIS, SVCMON, UIS) each have their own simple files for persistence. See Service-Generated Files for more information.
To address questions or circumstances beyond the scope of the CygNet Help, Additional CygNet Resources are available.
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Data Storage for DBS-Based Services