OT backup and restore testing: prove the recovery path
Inventory the files and dependencies needed to recover a control system, set recovery objectives, and test restoration on an isolated target.
Historian
Long-term high-resolution store for process time-series data.
A process historian stores high-resolution time-series data for years with compression and fast retrieval, serving trends, calculations, and analysis. Classic examples: AVEVA PI System, Proficy Historian. Distinct from SCADA trending (short-term) and from generic time-series databases (process-aware features).
Use the concept: Industrial automation fundamentals · PLC FAT & SAT checklist template · OT backup & restore test template
In depth
Historian sampling and deadband: budget storage without losing events
Estimate raw historian volume, distinguish acquisition from storage filtering, and validate compression against the signals and events that matter.
Single-pair Ethernet and APL: two wires to the field instrument
How Single-Pair Ethernet and Ethernet-APL bring power and 10 Mbit/s Ethernet to hazardous-area field devices — and what changes in process design.