Overview
Overview |
RedundancyMaster increases the reliability and availability of OPC data by configuring OPC Servers into redundant pairs that seamlessly appear as a single OPC Server to any OPC Client application — for a very reasonable price.
RedundancyMaster can be added to an existing server/client application without any reconfiguration of the application, keeping your processes going without any down time. In addition, a new Aliasing feature allows redundancy to be added to multiple pairs of servers that use the same ProgID.
Leveraging the popularity of OPC, a RedundancyMaster enabled system uses multiple connections to a device or system to increase the reliability of data collection. By transparently mapping these redundant data paths to appear as a single OPC Server connection, RedundancyMaster can be seamlessly integrated into any existing OPC application with no changes to your client and without loss of data. This drop-in design was a key development goal.
Features
Features- If a failure occurs on one OPC Server, RedundancyMaster automatically switches to the secondary server.
- Add Redundant Data Collection to any OPC Data Access Application.
- Supports multiple OPC Server pairs.
- ProgID Aliasing allows redundancy to be provided to multiple pairs of servers with the same ProgID.
- Easy setup - No programming or application changes required.
- Drop-in design makes implementing redundancy painless.
- Available fail over modes; Hot, Warm, and Cold.
- Configurable Server polling intervals.
- Trigger fail over and fallback.
- Configure multiple monitor items.
- Built-in diagnostics and event logging track every redundant events to disk.
- Events can generate email notifications to multiple recipients with custom headers and footers.
- A configurable Mail Server supports multiple servers for complete product redundancy front to back.
Required
Required Software and HardwareSupported Operating Systems
- Windows NT 4.0 Service Pack 6a
- Windows 2000 Service Pack 4
- Windows Server 2003
- Windows XP Service Pack 1
PC Hardware
Minimum- Pentium 200 MHz CPU
- 64 MB RAM
- 32 MB of Free Hard Drive Space
Recommended
- Pentium 400 MHz CPU
- 128 MB RAM
- 64 MB of Free Hard Drive Space
OPC Server
- At this time, this application provides redundancy for OPC Data Access Servers adhering to the 1.0 through 2.05a specifications. These servers can reside on any machine that is accessible from the system running this application and is not limited to the operating systems defined above (see Operating System Note above). If the server does not reside on the same machine as this application, a minimal OPC server configuration must be imported for redundancy to be achieved (see Adding Redundancy).
- This application provides redundancy support for up to 2 machines per OPC server. The OPC server on each machine must conform to the same OPC item name space in order for redundancy to be achieved. As an example, if the client requires an item named "Channel.Device.Tag", then this item must be configured on both machines.
OPC Client
- At this time, this application provides redundancy for any client that can communicate with OPC Data Access Servers adhering to the 1.0 through 2.05a specifications. These clients must reside on the same machine as this application. The benefit of this requirement is that this application can provide redundancy to projects already deployed without making any modifications to the client configuration.
Diagrams
Singular OPC System vs. Redundant OPC System
Most OPC data sources involve accessing data from a target system over some form of communications link. Shown above, a typical OPC application has only path to the device; where its weakest link is physical connection to that device. What is needed is a simple way to add redundancy to your OPC based system. Shown below, redundant systems use multiple data sources and paths to reduce data loss. RedundancyMaster allows you to configure multiple OPC Servers into redundant pairs so that if a failure occurs in one OPC Server, RedundancyMaster automatically switches to the secondary server preserving you data collection system.
No application (Server/Client) changes required. RedundancyMaster can be dropped into your current application seamlessly.
Licensing
Licensing- A variety of licensing options available for single use, OEM, Integrator, Site/Corporate, and Reseller applications.
Support
- 2 (two) hours of phone/email support. Additional support packages available.
- Free upgradable downloads available.