Requirements and Installation

Requirements

In order to embed the Disaster Recovery System (DRS) into a WinCC OA project, the following requirements must be fulfilled.

  • All used server, client and database computers must fulfil the standard WinCC OA requirements (see Hardware and Software Requirements for WinCC OA).
  • An installed WinCC OA version 3.9 or higher including the DRS Add-on must be available on all server computers.
  • A valid licence for using the Disaster Recovery System (License option "DRS - Disaster Recovery").

One of the following two databases can be used:

  • Oracle®/RDB
    • The RDB requirements must be fulfilled and the RDB archiving must be installed (see Requirements and Installation ).
    • The RDB database schemes on PSS as well as on SSS must have the same name and password and should have the same configuration.
  • PostgreSQL®/NGA
    • The NGA requirements must be fulfilled and the NGA archiving must be installed (see Requirements and Installation - NGA (PostgreSQL®)).
    • The NGA database schemes on PSS as well as on SSS must have the same name and password and should have the same configuration.

  • The project directory of every server must be made available for all of the necessary users. A simple solution to guarantee this is to create a Mapped Network Drive to every used server and client.
  • The driver managers and the control managers must have the same manager numbers on both systems.

In a Disaster Recovery System it is not supported to mix a 32-bit system and a 64-bit system. A 32-bit server can only be operated as an engineering server, that's why both Hot-Standby systems (PSS and SSS) must be identical and must be 64-bit. Please also refer to software-requirements.

Installation

The Disaster Recovery System (2x2 Redundancy) add on is a subproject, which has to be embedded into an available subproject. All files that are used by the Disaster Recovery System are stored in the Redundancy2x2_3.19 folder of the WinCC OA installation directory.

Proceed with the integration of the Disaster Recovery System as follows:

  1. Stop the WinCC OA project in which the Disaster Recovery System should be integrated.
  2. Embed Redundancy2x2_3.19 as a subproject into the project.
  3. Start the WinCC OA project.
  4. Open the ASCII manager and import the following files from the Redundancy2x2_<version_number>/dplist/ directory in the order stated below. For each file, set the options Automatically update existing DP types and Load data with alert handling.

    The order to following when importing is:

    1. disRecSystem.dpl
    2. _SysMgm_disRecSystem.dpl
    3. and additionally for PostgreSQL®/NGA: disRecSystem_NGA.dpl
  5. Recommended: Change the start mode of all driver and control managers in the WinCC OA console to manual (excepting the control manager with the -f pvss_scripts.lst option).
    Figure 1. Manager properties
  6. Follow the instructions in the chapter Create a Disaster Recovery System.
    Note:
    Note that two UIs (one on the PSS and one on the SSS) must be installed. You can view panels via the Desktop UI or the remote User Interface.