Data Security Scanning Performance: Why Full Coverage Doesn’t Mean Slow Scans

Source: Varonis Blog

Author: Amanda Wicks

URL: https://www.varonis.com/blog/data-scanning-performance

https://www.varonis.com/blog/data-scanning-performance

ONE SENTENCE SUMMARY:

Varonis optimizes data security scanning via scalable scan units, throttling awareness, in-place collectors, DDC, Smart Scan, and automated remediation.

MAIN POINTS:

  1. Cloud-provider API rate limits commonly become the primary constraint on scan speed.
  2. Scan units map to compute resources, enabling predictable linear throughput scaling when not throttled.
  3. Recommended sizing approach starts small, then adds scan units only if needed.
  4. Varonis handles capacity planning automatically, removing customer infrastructure calculations.
  5. Google Workspace and similar services require multiple API calls per file, accelerating throttling.
  6. Throttling visibility inside the product prevents wasted scaling that cannot improve scan duration.
  7. Cloud-to-cloud scanning can introduce WAN bandwidth bottlenecks, egress charges, and privacy concerns.
  8. Private collectors scan data in-place, returning only metadata to avoid egress and exposure.
  9. Dynamic Data Concentration reduces redundant reads on repetitive datasets without statistical sampling.
  10. Smart Scan prioritizes high-risk data first, enabling remediation before full scan completion.

TAKEAWAYS:

  1. Optimize for fastest risk reduction, not merely fastest scan completion.
  2. Monitor API throttling before adding compute, since extra units may not increase throughput.
  3. Prefer in-environment collectors when data residency, cost, and bandwidth constraints matter.
  4. Combine DDC with Smart Scan to accelerate both overall scanning and early high-risk findings.
  5. Rely on policy-driven automated remediation to eliminate millions of exposures at scale quickly.