What does "per-run capacity" mean?

Each plan defines the maximum total source data per run (source bucket size). For example, on the 10 TB plan, any bucket up to 10 TB can be migrated in one run. This is not bandwidth billing or monthly usage.

Do you charge for bandwidth or transferred bytes?

No. Pricing is based only on the maximum source data included in a run. Godwit does not charge for bandwidth, egress, or transferred bytes, but your storage or cloud provider may still apply its own network or egress fees.

Does the limit reset every run?

Yes. Capacity is per run, not cumulative. You can run unlimited migrations as long as each run fits your plan.

Can I run multiple migrations at the same time?

Yes. You can run multiple migrations concurrently as long as each run fits within your plan's per-run capacity.

How is run size calculated?

Run size is calculated during planning from all discovered source objects. Objects count by their source size, even if they already exist at the destination.

What happens if my source exceeds my plan's capacity?

During planning, Godwit Sync includes objects until the next object would exceed your plan's capacity. That object and the remaining objects are excluded from the run. You can then upgrade your plan or split the migration into smaller runs.

Can I upgrade my plan?

Yes. You can upgrade at any time to increase your per-run migration capacity.

What's the difference between the Free plan and the 50 GB trial?

The Free plan is a permanent 10 GB per-run capacity with no expiration. The 50 GB trial is a 30-day license available after registration for evaluating larger migrations.

Does retrying or resuming a migration consume extra capacity?

No. Retry and resume do not consume extra capacity. If the run fits your plan, you can retry or resume it without penalty.

What S3-compatible providers are supported?

Godwit Sync works with any S3-compatible storage, including AWS S3, MinIO, Cloudflare R2, Backblaze B2, DigitalOcean Spaces, Wasabi, and self-hosted object storage.

Do I need a license for --plan-only mode?

Yes. Capacity is evaluated during planning, so the same license and per-run limit apply whether you run --plan-only or execute the migration.

Is my data processed through your servers?

No. Godwit Sync runs locally in your environment. Data flows directly between source and destination. Nothing passes through our infrastructure.

Does the license work offline?

Yes. The license is a signed file that is validated locally and does not require continuous internet access.

What payment methods do you accept?

We accept all major credit and debit cards via Stripe.

Production-Grade Data Migration

On-the-Fly Object Storage Migration at Scale

Godwit Sync is a predictable, plan-first migration tool for moving data between S3-compatible object stores. Built for control, observability, and production safety.

Get Started See How It Works

Version History

Migrate all object versions

Rate Limited

Control read/write throughput

Resumable

Continue from exact checkpoint

Source Safe

Never overload source systems

Plan-First Approach

Plan Before You Move

Know exactly what will happen before any data moves. Generate migration plans, inspect them, modify as needed, and execute with confidence.

Deterministic migration plan generation (--plan-only)
Migration plans stored in SQLite
Inspect, modify, and reuse plans
Predictable execution every time

$ godwit sync \
    --source s3://production-bucket \
    --dest s3://backup-bucket \
    --plan-only --brief

────────────────────────────────────────
  PLAN CREATED
────────────────────────────────────────
  ✓ Run-ID: run-1770316589731184186
  ✓ Objects analyzed: 685,234
  ✓ Objects to transfer: 620,205
  ✓ Objects skipped: 65,029
  ✓ Data to transfer: 40.03 GB
  ✓ Data skipped: 4.7 GB
────────────────────────────────────────

End-to-End Checksums

Validate every object with real MD5 hashes, not just ETAGs.

Deterministic Runs

Identical inputs produce identical results—no hidden randomness.

Parallel, Controlled Transfers

High throughput without sacrificing stability or safety.

Metadata Fidelity

Preserve object metadata exactly as stored at the source.

Chunk-Level Recovery

Recover from partial uploads without corrupting large files.

Object Lock Preservation

Replicate GOVERNANCE/COMPLIANCE retention and legal hold settings per version.

Production Safety

Production-Safe by Design

Built for environments where downtime and data loss are not options. Rate-limit operations, resume from any point, and keep your source systems healthy.

Rate-limited reads and writes
True stream-to-stream copy (no local staging)
Resume from exact file or chunk
Large file stability
No overload of source systems

Full Observability

Observable & Verifiable

Know exactly what's happening at every moment. Integrate with your existing monitoring stack and verify every byte after it lands.

Verbose CLI UI with real-time progress
REST status endpoint
Prometheus-compatible metrics
Predictable duration and progress estimates
Built-in MD5 verify after every transfer

Status Endpoint

JSON endpoint for real-time sync progress — objects, bytes, ETA, storage class breakdown, and Object Lock statistics.

Learn more

Prometheus Metrics

Counters, histograms, and gauges for deep observability — including Object Lock retention and legal hold counts. Plug into Grafana or any Prometheus-compatible stack.

Learn more

Version History

Migrate Every Version, Not Just the Latest

Preserve the complete history of your S3 objects. Godwit Sync copies all versions - or just the ones you need - with full checksum verification, Glacier-aware skipping, and Object Lock preservation.

Full or partial version history migration
Per-version checksum verification
Glacier-class objects detected and skipped
Object Lock retention and legal hold preserved
Detailed per-version transfer reporting

# Plan a full version history migration
$ godwit sync \
    --source s3://prod-bucket \
    --dest s3://archive-bucket \
    --version-mode all --plan-only

Planning...

⚠ Warning: 9 GLACIER objects detected.
  Restore required before migration.

────────────────────────────────────────
  PLAN READY
────────────────────────────────────────
  ✓ Run-ID: version-history-prod
  ✓ Objects analyzed: 23
  ✓ Objects to transfer: 14
  ✓ Objects skipped: 9
  ✓ Data to transfer: 48.20 GB
────────────────────────────────────────

# Reusable run IDs resume interrupted syncs
$ godwit sync \
    --resume --brief --run-id run-daily-backup \
    --source s3://prod \
    --dest s3://backup

────────────────────────────────────────
  RESUME READY
────────────────────────────────────────
  ✓ Run-ID: run-daily-backup
  ✓ Total objects: 20
  ✓ Uploaded objects: 15
  ✓ Objects left: 5
  ✓ Data to transfer: 2.00 GB
────────────────────────────────────────

# Automation-friendly exit codes
$ echo $?
0

Scale & Automation

Built for Repetition and Scale

Design once, run many times. Perfect for scheduled syncs, multi-bucket operations, and CI/CD integration.

Reusable run IDs
Incremental syncs
Multiple buckets and paths
Automation-friendly CLI workflows

Data Movement, Done Right

Godwit Sync turns risky storage migrations into planned, observable, production-safe workflows for modern infrastructure teams.

Plan-First Execution

Preview changes before they happen. No surprises in production.

Operational Transparency

Built-in metrics and monitoring. Integrate with your existing stack.

CLI as an API

Scriptable, automatable, and CI/CD ready from day one.

Automation Over Ad-Hoc

Designed for repeated, scheduled operations—not one-off scripts.

Predictable Cost & Time

Know transfer times and resource usage before you start.

Hybrid & On-Prem Ready

Works with any S3-compatible storage, cloud or self-hosted.

$ godwit sync \ --source s3://production-bucket \ --dest s3://backup-bucket \ --plan-only --brief ──────────────────────────────────────── PLAN CREATED ──────────────────────────────────────── ✓ Run-ID: run-1770316589731184186 ✓ Objects analyzed: 685,234 ✓ Objects to transfer: 620,205 ✓ Objects skipped: 65,029 ✓ Data to transfer: 40.03 GB ✓ Data skipped: 4.7 GB ────────────────────────────────────────

Production-Safe by Design

Built for environments where downtime and data loss are not options. Rate-limit operations, resume from any point, and keep your source systems healthy.

Rate-limited reads and writes

True stream-to-stream copy (no local staging)

Resume from exact file or chunk

Large file stability

No overload of source systems

Observable & Verifiable

Know exactly what's happening at every moment. Integrate with your existing monitoring stack and verify every byte after it lands.

Verbose CLI UI with real-time progress

REST status endpoint

Prometheus-compatible metrics

Predictable duration and progress estimates

Built-in MD5 verify after every transfer

Migrate Every Version, Not Just the Latest

Preserve the complete history of your S3 objects. Godwit Sync copies all versions - or just the ones you need - with full checksum verification, Glacier-aware skipping, and Object Lock preservation.

Full or partial version history migration

Per-version checksum verification

Glacier-class objects detected and skipped

Object Lock retention and legal hold preserved

Detailed per-version transfer reporting

# Plan a full version history migration $ godwit sync \ --source s3://prod-bucket \ --dest s3://archive-bucket \ --version-mode all --plan-only Planning... ⚠ Warning: 9 GLACIER objects detected. Restore required before migration. ──────────────────────────────────────── PLAN READY ──────────────────────────────────────── ✓ Run-ID: version-history-prod ✓ Objects analyzed: 23 ✓ Objects to transfer: 14 ✓ Objects skipped: 9 ✓ Data to transfer: 48.20 GB ────────────────────────────────────────

# Reusable run IDs resume interrupted syncs $ godwit sync \ --resume --brief --run-id run-daily-backup \ --source s3://prod \ --dest s3://backup ──────────────────────────────────────── RESUME READY ──────────────────────────────────────── ✓ Run-ID: run-daily-backup ✓ Total objects: 20 ✓ Uploaded objects: 15 ✓ Objects left: 5 ✓ Data to transfer: 2.00 GB ──────────────────────────────────────── # Automation-friendly exit codes $ echo $? 0