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PACS Migration Time Calculator

Estimate PACS migration duration from archive size, sustained throughput, daily transfer window, and validation overhead.

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Inputs

TB
Mbps
hr/day

Your values stay on this device.

Results

Estimated Migration Duration
Adjusted Transfer Hours910.22
Daily Transfer Capacity4.39
Migration Time37d 22h 13m

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Assumptions

  • Throughput is sustained across the migration window.
  • Overhead covers retries, validation, and operational pauses.
  • No archive contents are accessed.

Sensitivity preview

Archive Size -10%: Estimated Migration Duration 51.2 days

Archive Size Current: Estimated Migration Duration 56.89 days

Archive Size +10%: Estimated Migration Duration 62.58 days

Formula: Transfer hours = archive TB * 8,388,608 megabits per TB / throughput Mbps / 3600 * overhead factor. Migration days = transfer hours / migration hours per day.

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About this PACS Migration Time Calculator

PACS migrations are constrained by data volume, network throughput, transfer windows, validation, and exception handling. This calculator gives a first-pass duration estimate.

Who this calculator is for

  • PACS administrators planning migrations.
  • Radiology IT project managers.
  • VNA and cloud archive migration teams.

When to use it

  • Estimate migration calendar days.
  • Compare bandwidth scenarios.
  • Include validation and retry overhead.

How to use this calculator

  1. Enter archive size and sustained transfer speed.
  2. Set hours per day available for migration.
  3. Add validation or retry overhead.
  4. Review migration days and daily data volume.

Key assumptions

  • Throughput is sustained across the migration window.
  • Overhead covers retries, validation, and operational pauses.
  • No archive contents are accessed.

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

Raw transfer hours = archive TB x 8,388,608 megabits per TB / throughput Mbps / 3600. Calendar days = adjusted hours / migration hours per day.
Transfer hours = archive TB * 8,388,608 megabits per TB / throughput Mbps / 3600 * overhead factor. Migration days = transfer hours / migration hours per day.

Inputs explained

Archive size

Total source archive payload to migrate.

Sustained throughput

Effective DICOM or object-transfer throughput after bottlenecks.

Migration window

Hours per day migration can run without disrupting operations.

Understanding your results

The output is an engineering estimate. Real projects also depend on database cleanup, exception queues, patient matching, and validation sampling.

Example scenarios

Archive move

250 TB at 800 Mbps for 16 hours/day with 25% overhead takes about 30 days.

Key Features

  • Instant Calculation
  • Private & Secure
  • Mobile Optimized

Tips & Best Practices

  • Pilot with real studies before committing to a schedule.
  • Track exceptions separately from raw transfer duration.
  • Plan validation and clinical cutover as separate tasks.

Frequently Asked Questions

Does this include database migration?
No. It estimates image payload transfer time only.
Should I use peak or average throughput?
Use sustained effective throughput measured during a pilot.
Are archive details stored?
No. Calculations run locally.