When a DCS failure has detected, the only action known and applied so far is a
system restart. This is a common practice in networked system monitoring. In
contracts to it presented here Backward Tracing Algorithm enables the DCS recovery limited by the “area of damages”.
A combination of both algorithms forms the area of damages enabling network
management procedures substantially reduced the cost of recovery for DCS as a
whole. Note that for FTA and BTA engineering thresholds e f and e b can be set
differently and have different values.
Figures 18.5 and 18.6 visualize how both algorithms work, they were kindly
given by IT-ACS Ltd. from the materials of the patent [10] and materials of IPO
case against Russian Government attempt to endorse it [13].
Recovery procedures from a list of legitimate and relevant events should be
applied automatically, or in highly sensitive cases under supervision of maintenance
engineers. For reliability, security, and maintenance efficiency purposes it is also
important to record and save the results of recovery procedures [4, 13].
The checking procedure of a threat on DCS might be activated by various
reasons:
• A signal indicating that there is an inconsistency in data
• Detected deviation in system or element behavior in one or more vertexes.
• Maintenance team
• Maintenance automatic procedures
Fig. 18.5 Visualization of forward tracing algorithm
18.3 Resilience and Recoverability in Networked System
261
system restart. This is a common practice in networked system monitoring. In
contracts to it presented here Backward Tracing Algorithm enables the DCS recovery limited by the “area of damages”.
A combination of both algorithms forms the area of damages enabling network
management procedures substantially reduced the cost of recovery for DCS as a
whole. Note that for FTA and BTA engineering thresholds e f and e b can be set
differently and have different values.
Figures 18.5 and 18.6 visualize how both algorithms work, they were kindly
given by IT-ACS Ltd. from the materials of the patent [10] and materials of IPO
case against Russian Government attempt to endorse it [13].
Recovery procedures from a list of legitimate and relevant events should be
applied automatically, or in highly sensitive cases under supervision of maintenance
engineers. For reliability, security, and maintenance efficiency purposes it is also
important to record and save the results of recovery procedures [4, 13].
The checking procedure of a threat on DCS might be activated by various
reasons:
• A signal indicating that there is an inconsistency in data
• Detected deviation in system or element behavior in one or more vertexes.
• Maintenance team
• Maintenance automatic procedures
Fig. 18.5 Visualization of forward tracing algorithm
18.3 Resilience and Recoverability in Networked System
261