NI Simple Dual Redundancy (SDR) 1.0 is available as a free download on our software library. This free program is an intellectual property of National Instruments. NI Simple Dual Redundancy (SDR) lies within System Utilities, more precisely Automation. Our antivirus scan shows that this download is virus free. The software is sometimes referred to as "NI Simple Dual Redundancy SDR". The latest installer that can be downloaded is 4.5 MB in size. The most popular version among the program users is 1.0.
From the developer:
The Simple Dual Redundancy (SDR) component is a set of LabVIEW VIs used to implement dual-redundant control where one controller is active and the other controller is in “hot standby” mode. The controllers communicate regularly with one another via a serial link so that if one controller fails, the other will know to take control.
You may want to check out more software, such as SDR-RADIO.com, Dual Browsing or Simple FTP Client, which might be related to NI Simple Dual Redundancy (SDR).