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Backblaze B2 Cloud Storage

Provider: Backblaze, Inc.

Launched: September 2015

Type: S3-Compatible Object Storage

Website: backblaze.com/b2

Overview

Backblaze B2 Cloud Storage is the most cost-effective S3-compatible object storage platform, delivering enterprise-grade reliability at 1/5th the price of Amazon S3. With straightforward, transparent pricing and no hidden fees, Backblaze has become the preferred choice for backup vendors and cost-conscious organizations. The platform stores over 2 exabytes of customer data across its infrastructure and integrates seamlessly with 700+ backup and storage applications through its S3-compatible API.

Product Description

Backblaze B2 provides hot cloud storage accessible within milliseconds, making it suitable for both active backups and archival storage without the complexity of multiple storage tiers. The platform's radical price transparency eliminates surprise charges—what you see is what you pay. Unlike competitors with complex pricing matrices, Backblaze charges one flat rate for storage and straightforward egress pricing with generous free allowances.

The service leverages Backblaze's unique expertise in storage reliability, developed over 16 years operating their consumer backup service protecting over 750 petabytes. This operational knowledge resulted in custom-designed Storage Pods—high-density storage servers that deliver enterprise durability at commodity costs. B2 provides 99.9% uptime SLA and 99.999999999% (11 9's) durability, matching enterprise providers at a fraction of the cost.

Key Features

💰 Transparent Pricing

Simple, predictable costs with no hidden fees, egress charges, or API request fees. What you see is exactly what you pay.

🔗 S3-Compatible API

Native S3 API compatibility enables seamless integration with existing backup software without code changes.

🌐 Bandwidth Alliance

Free egress when using Cloudflare CDN and partner services, dramatically reducing data transfer costs.

🔐 Built-In Encryption

Server-side encryption at rest (AES-256) and in transit (TLS 1.2+) included at no additional charge.

📦 Object Lock

Immutable storage with Object Lock (WORM) compliance for ransomware protection and regulatory requirements.

🔄 Object Versioning

Automatic versioning maintains historical copies of objects, protecting against accidental deletion and modification.

⚡ Hot Storage Performance

Millisecond access latency for all stored data without cold storage delays or retrieval fees.

🎯 Lifecycle Rules

Automated deletion and version management through configurable lifecycle policies reduce storage costs.

Pricing (Simple & Transparent)

💰 Incoming Data (Upload) Pricing

FREE - All data uploaded to B2 is completely free

Upload unlimited backup data without any ingress charges. No API request fees for uploads either!

📦 Storage Pricing

$6 per TB/month

or $0.006 per GB/month

One simple price. No tiers. No complexity. All data is hot storage with instant access.

Price Comparison:

  • 🔴 Amazon S3 Standard: $23/TB/month (283% more expensive)
  • 🟠 Google Cloud Storage: $20/TB/month (233% more expensive)
  • 🔵 Microsoft Azure Blob: $18/TB/month (200% more expensive)
  • 🟢 Backblaze B2: $6/TB/month (lowest price for hot storage)

📤 Egress (Data Transfer Out) Pricing

Free Egress Allowance

3x your stored data per month is FREE

Store 10TB? Get 30TB of free downloads monthly. Most backup operations stay within free tier!

  • First 3x stored data: FREE (e.g., 10TB stored = 30TB free egress)
  • Beyond free tier: $0.01 per GB ($10/TB)
  • Via Cloudflare CDN: FREE (Bandwidth Alliance partnership)

💡 Tip: Using Cloudflare or other Bandwidth Alliance partners eliminates egress charges entirely!

Additional Pricing Details

Bandwidth Alliance Partners

Backblaze partnered with leading CDN and cloud providers to offer FREE egress when accessing B2 data through these services:

Cloudflare

Zero-cost data transfer when serving B2 content through Cloudflare CDN. Perfect for backup web portals.

Fastly

Free egress when using Fastly CDN, ideal for distributed backup recovery scenarios.

Bunny CDN

Reduced or eliminated egress charges when combining B2 storage with Bunny CDN delivery.

Integration Ecosystem

Over 700 applications natively support Backblaze B2, including:

Use Cases for Backup

Cost Example: 10TB Monthly Backup

Scenario: 10TB backup storage, 100GB monthly uploads (incremental), 50GB monthly restores

  • Storage: 10TB × $6 = $60/month
  • Upload (Ingress): FREE
  • Download (Egress): 50GB within 30TB free allowance (3x 10TB) = $0
  • API Requests: Well within free tier = $0
  • Total Monthly Cost: $60/month

Compare to AWS S3 Standard: $236/month (293% more expensive!)

Annual savings: $2,112 by choosing B2 over AWS S3

Security & Compliance

Why Choose Backblaze B2?

Backblaze B2's transparent pricing eliminates the budget uncertainty that plagues AWS and Azure users. With simple per-GB pricing and generous free egress allowances, organizations can accurately predict costs without surprise bills. The 3x free egress policy means typical backup operations—occasional restores and testing—incur zero transfer charges, a stark contrast to AWS's $0.09/GB egress fees that can exceed storage costs.

The platform's S3-compatible API provides enterprise features without enterprise complexity. Object Lock, versioning, and lifecycle management work identically to S3, enabling seamless migration from AWS while reducing storage costs by 75% or more. For backup vendors and MSPs, B2's predictable pricing enables profitable service offerings where AWS margins would be razor-thin.

Backblaze's operational transparency and customer-first philosophy, demonstrated through their annual hard drive reliability reports and open-source Storage Pod designs, builds trust that closed-ecosystem providers cannot match. With over 16 years protecting customer data and 2+ exabytes under management, Backblaze proves that affordable and reliable are not mutually exclusive.