When the Test Broke Containment
Commvault, Tuesday, September 15th, 2026
A recovery test that escaped its isolation boundary illustrates why clean-room design matters for resilience testing.
Commvault recounts an incident in which a recovery test escaped its intended containment boundary and affected production systems.
The post uses the episode to explain why isolated recovery environments need rigorous network, identity, and storage separation rather than informal isolation.
It walks through the specific design failures that allowed the escape and the controls that would have prevented it.
The piece argues that organizations building clean-room recovery capability should treat the isolation boundary as a security control subject to the same scrutiny as any production boundary.