Log Retention Calculator

Calculate security log storage requirements from log sources, event rates, retention policy, and tiered storage costs. Supports PCI DSS, HIPAA, and SOX compliance planning.

Inputs

Log sources

Avg events/sec per source

Avg event size (bytes)

Retention period (days)

Tab to move between fields

Results

Total EPS

250

Total storage needed (TB)

0.61

Events per day (millions)21.6

Raw daily volume (GB)10.1

Hot tier (GB)52

Warm tier (GB)129

Cold tier (GB)317

Monthly storage cost ($)$11

Annual storage cost ($)$128

How to Use This Calculator

Enter log sources and average events/sec per source and average event size (bytes).
Enter retention period (days) -- PCI-DSS: 365, HIPAA: 2190, SOX: 2555.
Review total EPS, events per day (millions), raw daily ingestion (GB), and total storage (TB).
Apply compression (5-10:1 for logs) and deduplication to reduce actual storage needs.

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