Industrial Cybersecurity & OT Risk worked example

Backup Restore Capacity at 61% expected recovery team availability: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop expected recovery team availability to 61%, then walk the calculation through step by step. Estimate good backup restore capacity from systems restored per cycle, available restore cycles, uptime, and validation yield.

The inputs for this scenario

  • OT systems restored per cycle: 5 systems / cycle (held at the documented default)
  • Available restore cycles: 18 cycles (held at the documented default)
  • Expected recovery team availability: 61 % (the input this scenario stresses; the baseline uses 85)
  • Restore validation pass rate: 92 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross backup restore capacity = OT systems restored per cycle × available restore cycles.
  • Validated backup restore capacity works out to 50.51 systems at these inputs, and this is the headline figure for the scenario.
  • Gross backup restore capacity works out to 90 systems at these inputs.
  • Recovery availability loss works out to 35.1 systems at these inputs.
  • Restore validation loss works out to 4.39 systems at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expected recovery team availability sits at 85% and the headline result is 70.38 systems, this scenario comes in 28.24% below the baseline at 50.51 systems.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to expected recovery team availability, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes restore and validation rates are stable; a corrupted backup chain or a dependency that must be restored in sequence can cut effective capacity below the modeled figure.

Results at a glance

  • Validated backup restore capacity: 50.51 systems (headline result)
  • Gross backup restore capacity: 90 systems
  • Recovery availability loss: 35.1 systems
  • Restore validation loss: 4.39 systems

Run it with your numbers

  • To rerun this with your own numbers, open the live Backup Restore Capacity calculator, set expected recovery team availability to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.