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Audit Log Retention Storage Calculator

Estimate healthcare audit log storage from daily events, event size, retention, compression, replicas, and storage price.

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Inputs

KB
days

Your values stay on this device.

Results

Retained Audit Log Storage
Daily Raw Logs2.86
Monthly Storage Cost$117.28
Annual Storage Cost$1,407.32

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Assumptions

  • Inputs are user-entered because healthcare policy, prices, retention requirements, and incident facts vary.
  • Calculations run locally in your browser and do not store PHI, incident details, access logs, system names, or operating assumptions.
  • This calculator does not define the retention period required for your organization.

Sensitivity preview

Audit Events per Day -10%: Retained Audit Log Storage 4.59 TB

Audit Events per Day Current: Retained Audit Log Storage 5.1 TB

Audit Events per Day +10%: Retained Audit Log Storage 5.61 TB

Formula: Retained TB = events per day x event KB / 1024 / 1024 x retention days x overhead factor x replicas / compression ratio / 1024.

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About this Audit Log Retention Storage Calculator

Audit log retention planning needs both raw event volume and storage overhead assumptions.

Who this calculator is for

  • Healthcare IT, privacy, compliance, security, and operations teams doing first-pass planning.
  • Hospitals, clinics, imaging groups, and digital health teams documenting local assumptions.
  • Analysts preparing transparent estimates before legal, compliance, vendor, or leadership review.

When to use it

  • Turn local incident dates, log volume, downtime, staffing, and cost assumptions into planning outputs.
  • Compare incident, retention, or downtime scenarios before updating policy or budgets.
  • Document the formula assumptions behind a compliance memo, tabletop exercise, or recovery plan.

How to use this calculator

  1. Enter values from your EHR, PACS, SIEM, ticketing, privacy, finance, or operations records.
  2. Replace defaults with local assumptions, prices, policies, and measured rates.
  3. Use the primary output as a planning signal, then review secondary outputs with the responsible team.

Key assumptions

  • Inputs are user-entered because healthcare policy, prices, retention requirements, and incident facts vary.
  • Calculations run locally in your browser and do not store PHI, incident details, access logs, system names, or operating assumptions.
  • This calculator does not define the retention period required for your organization.

Accuracy and testing

Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.

View accuracy page

How this calculator works

Daily raw GB = events per day x average event KB / 1024 / 1024. Retained GB = daily raw GB x retention days x overhead x replicas / compression ratio.
Retained TB = events per day x event KB / 1024 / 1024 x retention days x overhead factor x replicas / compression ratio / 1024.

Inputs explained

Local operating inputs

Dates, case counts, log volume, exam volume, order volume, downtime duration, and staffing values should come from your own environment.

Policy and price assumptions

Notification windows, retention periods, hourly costs, productivity assumptions, and unit prices vary by organization and should be user-entered.

Risk and impact factors

Severity, mitigation, recipient, and workflow disruption factors are transparent scoring inputs for planning, not legal conclusions.

Understanding your results

This calculator does not define the retention period required for your organization. Results are planning estimates and do not replace HIPAA, legal, privacy, compliance, security, clinical, or vendor-specific review.

Example scenarios

Planning example

Two million daily events averaging 1.5 KB retained for 2,190 days with 25% overhead, 2 replicas, and 3:1 compression requires about 7.8 TB.

Key Features

  • Instant Calculation
  • Private & Secure
  • Mobile Optimized

Tips & Best Practices

  • Use measured production data when available and keep the measurement period consistent.
  • Add buffers for investigation time, vendor delays, manual workflows, peak demand, and patient-safety requirements.
  • Confirm deadlines, breach determinations, contracts, and regulatory obligations with qualified privacy, legal, compliance, and security reviewers.

Frequently Asked Questions

Are PHI, incident, or system details stored?
No. Calculations run locally in your browser and do not store the values you enter.
Can this determine whether a HIPAA breach occurred?
No. These calculators provide planning math only. Breach determinations and notification obligations require fact-specific legal, privacy, and compliance review.
Why are deadlines, prices, and rates user-entered?
Healthcare organizations have different policies, contracts, states, vendors, and cost structures. User-entered assumptions keep the formulas transparent and auditable.