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Resumability

As explained in Practical Automation with PowerShell: Effective scripting from the console to the cloud

Resumable automation is an automation design in which execution can restart after a failure and continue without repeating completed work or causing adverse effects.

Resumability designs multistage automation so execution can restart after failure, skip completed work, and avoid adverse side effects. section 10.6

Build resumable stages by asking:

  • What can fail at each command, and can the stage safely continue or rerun? section 10.6
  • Which prerequisites should be validated explicitly, such as an accessible storage path or available virtual switch? section 10.6
  • Does the target already exist? If so, skip creation and continue with configuration and later stages. section 10.6

Resuming virtual machine creation

A Hyper-V workflow checks the host path and switch, creates the virtual machine only when absent, configures memory, checkpoints, DVD media, and boot order, then starts installation. section 10.6

How Practical Automation with PowerShell: Effective scripting from the console to the cloud covers it

How deep it goes
Descends from failure questions into path validation, conditional creation, and staged virtual machine configuration.
Examples
Uses Hyper-V creation stages involving storage paths, switches, memory, checkpoints, ISO media, boot order, and startup.
What it assumes
Assumes familiarity with multistage automation and cmdlet behavior while emphasizing explicit checks for changing command behavior.
What you can do after
Apply resumable logic through Hyper-V PowerShell cmdlets and continue configuration after an existing VM is detected.
How it connects
Connects error handling, validation, virtual machine creation, and PowerShell cmdlets.
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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Practical Automation with PowerShell: Effective scripting from the console to the cloud. The section links point to the parts of the book it draws on.