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Every serving host needs the new 500 GB checkpoint before it can switch versions. Design the delivery path so transfer, verification, activation, and recovery do not collide. This independent, original scenario is designed for ML / Inference Systems, Software / Infrastructure preparation. Work through the stages in order, explain each decision, and use the review dimensions to test whether the result remains defensible when constraints change.
State what is checked, at which point, and what a host does when verification fails after most of the download already succeeded.
Is verification tied to a decision instead of being a checksum step at the end?The fleet briefly runs both versions. Define the order in which hosts move and the signal that makes a single host eligible to serve the new version.
Can the candidate separate readiness from activation?One host restarts during transfer and another fails just after activation. Describe resumption without refetching what is already valid, and the rollback to the prior version.
Does recovery reuse existing state instead of restarting the whole rollout?Use these checks after a first draft. They are review prompts, not six more questions to answer.
Clarifies goals, constraints, and ambiguous requirements.
Protects invariants and handles boundary conditions.
Identifies realistic failures and designs recovery paths.
Makes ownership and transitions explicit.
Provides enough visibility to diagnose and run the system.
Explains what is gained, lost, and intentionally deferred.
Use a different system, project, or situation and check whether the structure still produces a specific, defensible answer.