21Relay
Bitcoin Utilities

21Relay utility

Node Storage Calculator

Separate blockchain data, indexes, operating-system space and safety margin before choosing an SSD.

Live data·Blockchain.com Blockchain Size chart

Detail level

Guided mode keeps the decision focused. Advanced mode reveals extra assumptions.

Keep in mind: The live baseline excludes database indexes; 21Relay adds separate planning allowances.

Storage plan

Quick starts

Storage requirement

This drive needs a rethink

Choose a larger SSD, switch to pruning, or shorten the planning period before proceeding.
Continue to the node setup guide →

Future total requirement

1,165 GB

Remaining headroom

-165 GB

Recommended drive tier

2 TB SSD

Current chain baseline

740 GB

Baseline date: reviewed fallback

Blockchain data: 740 GB now

Indexes and databases: 15 GB

Operating system and updates: 40 GB

Safety margin: 100 GB

Methodology, data and limits

Data source: Blockchain.com Blockchain Size chart. No successful update is currently stored.

  • The live baseline excludes database indexes; 21Relay adds separate planning allowances.
  • A pruned node still validates the full chain but deletes eligible old block files after validation.
  • Annual growth is an editable planning assumption, not a guaranteed projection.

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Fee Estimator

Estimate on-chain transaction fees from current fee-rate recommendations.

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Connected workflow

Prepare a Bitcoin node

1. Node Readiness Check
2. Node Storage Calculator
3. Node Bandwidth Estimator
4. Node Sync Time Estimator

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21Relay utilities are educational planning tools, not financial, tax or investment advice. Verify important decisions independently.

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