PV Auto-Expansion
Automatically expand Persistent Volumes before capacity breach, preventing disk-full outages.
Overview
PV Auto-Expansion automatically expands Persistent Volumes when they approach capacity limits, preventing disk-full errors and application outages. Triggered by PV Capacity Forecast insights or threshold-based rules, it seamlessly increases storage without manual intervention.
Wave handles the entire expansion process—validating StorageClass support, executing the resize operation, and monitoring filesystem expansion—ensuring zero downtime and data safety throughout the process.
Why Better Than Manual PV Expansion
| Manual PV Expansion | Wave PV Auto-Expansion | |
|---|---|---|
| Expansion Process | Reactive—expand after receiving disk-full alerts during incidents | Proactive—expand before capacity breach based on forecasts |
| Outage Prevention | Application disruptions during emergency expansions | Zero-downtime expansion during scheduled windows |
| Monitoring Required | Constant vigilance on storage dashboards | Fully automated—set policy once and forget |
Key Outcomes & Benefits
Eliminate disk-full application outages completely
Zero manual intervention for storage scaling
Ensure applications never run out of storage
How It Works
1. Capacity Monitoring
Continuously tracks PV usage and triggers expansion when thresholds are exceeded or forecast predicts breach.
2. Validation
Validates StorageClass supports volume expansion and checks for any constraints.
3. Expansion Execution
Executes PVC resize operation and monitors Kubernetes controller for completion.
4. Verification
Verifies filesystem expansion and confirms new capacity is available to applications.
Never Experience Disk-Full Outages Again
Automate storage expansion before capacity issues occur.
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