Industrial Cybersecurity & OT Risk calculator

Backup Restore Capacity Calculator

Use this calculator to estimate backup restore capacity for OT recovery planning. It converts restore batch size, available recovery cycles, recovery team availability, and validation pass rate into systems that can be restored and accepted.

What this calculator does

  • Estimate good backup restore capacity from systems restored per cycle, available restore cycles, uptime, and validation yield.
  • Use it when testing whether recovery teams can restore critical OT systems inside the required recovery window.
  • The result estimates validated OT systems recoverable in the recovery window.

Formula used

  • Gross backup restore capacity = OT systems restored per cycle × available restore cycles
  • Validated backup restore capacity = gross capacity × expected recovery team availability × restore validation pass rate

Inputs explained

  • OT systems restored per cycle: Use the number of PLC projects, HMI images, SCADA servers, workstations, or configurations restored in one recovery cycle.
  • Available restore cycles: Enter restore cycles available in the recovery window based on team shifts, tooling, hardware, and validation schedule.
  • Expected recovery team availability: Use expected availability after coordination delays, vendor access, hardware constraints, and shift coverage.
  • Restore validation pass rate: Use the expected share of restores that pass logic, communication, application, and operations acceptance checks without rework.

How to use the result

  • Use it to test RTO assumptions, staffing, spare hardware needs, and backup restore procedures.
  • It assumes backups are accessible, hardware is available, and validation criteria are known.

Common questions

  • What is the backup restore capacity calculator for? It estimates how many OT systems can be restored and validated in a recovery window.
  • What information should I enter? Use systems per restore cycle, available cycles, team availability, and validation pass rate.
  • What does the result tell me? The result helps check whether recovery capacity supports RTO targets.
  • When is the result only an estimate? It is only an estimate when backup quality, hardware availability, validation effort, or vendor support changes.

Last reviewed 2026-05-12.