Each ftServer® platform integrates fully replicated hardware components that eliminate virtually any single point of failure and safeguard data integrity. The system automatically manages its replicated components, executing all processing in lockstep. Because replicated components perform the same instructions at the same time, there is zero interruption in processing, zero loss of performance, and zero loss of data integrity even if a component fails. This means that, unlike a high-availability cluster, the Stratus ftServer continues to function while any issue is being resolved. The architecture uses industry-standard technology and commodity components, making the platform cost-effective to manufacture and easy to upgrade as enhanced and improved components are brought to market.
How Lockstepping Works
Stratus® ftServer® platforms use a standard dual-modular-redundancy (DMR) configuration that includes two CPU/memory units. If a CPU/memory unit fails or is offline for maintenance or diagnostic purposes, the system continues to operate normally with the remaining components, providing 99.999% uptime or better – on average less than five minutes of downtime annually.