Backblaze B2: Low Cost Cloud Object Storage Review: Features, Pricing, and Why Startups Use It
Introduction
Backblaze B2 is a low-cost, S3-compatible cloud object storage service aimed at developers, startups, and businesses that need scalable storage without the premium price tag of the big three (AWS, GCP, Azure). It is best known for its very simple pricing model and focus on cold and warm storage use cases: backups, media archives, app assets, and data lakes.
For startups, infrastructure decisions can lock in costs and complexity for years. Backblaze B2 appeals to early-stage teams because it offers:
- Predictable, transparent pricing
- Simple APIs and S3 compatibility
- Fast onboarding with minimal configuration
- Good performance for most read/write workloads
This makes B2 attractive as a primary or secondary storage layer for products, internal tools, and data pipelines without burning runway on storage bills.
What the Tool Does
Backblaze B2 is a cloud object storage service. You store data as objects (files plus metadata) inside buckets, and access them over HTTP(S) using SDKs, CLI, or S3-compatible APIs.
Core purposes include:
- Durable storage for unstructured data: images, videos, logs, backups, exports.
- Scalable capacity: store gigabytes to petabytes without managing hardware.
- Reliable retrieval: access objects from applications, CDN, or directly by URL.
- Cost-efficient archiving: long-term storage for data you cannot delete but rarely access.
Unlike a file server or block storage attached to a VM, B2 is designed for internet-scale applications where many clients can read/write objects concurrently.
Key Features
S3-Compatible API and Integrations
Backblaze B2 offers an S3-compatible API layer in addition to its native API. This matters for startups because:
- Most modern tools (backup apps, CDNs, data tools) already support S3.
- Migration from or to AWS S3 is easier with minimal code changes.
- Many open-source libraries “just work” with B2 once endpoints and credentials are configured.
Simple, Transparent Pricing
One of B2’s standout features is its straightforward pricing model:
- Flat per-GB per-month storage pricing
- Low egress (download) pricing compared to major clouds
- Free class B transactions up to generous limits
Unlike some competitors, you are less likely to get surprised by obscure line items (e.g., data scanning, “early delete” fees, or inter-region transfer).
High Durability and Redundancy
Backblaze B2 is designed for 11 nines (99.999999999%) durability, similar to big cloud providers. Data is stored with redundancy across multiple drives and servers in a data center, protecting against hardware failure.
Lifecycle Rules and Object Management
Backblaze lets you:
- Set lifecycle rules to automatically delete old versions or files after a specified period.
- Use object locking and retention policies for compliance and immutability (e.g., prevent deletion for X days).
- Manage bucket-level access control for public or private data.
Native and Third-Party Integrations
Common integrations relevant to startups include:
- Cloudflare, Fastly, and other CDNs as a low-cost origin store.
- Backup tools like Veeam, MSP360, Duplicati, Arq, and others.
- NAS devices (Synology, QNAP) and local backup clients.
- Data tools and pipelines via S3-compatible connectors.
Multi-Region and Cloud Replication
Backblaze has multiple regions (US and EU regions, plus others as they expand). You can:
- Choose a region close to your users or infrastructure.
- Use cloud replication to automatically copy data between regions for redundancy or data sovereignty.
Command-Line and SDK Support
Developers can use:
- b2 CLI for scripting backups and automation.
- SDKs for popular languages (Python, Java, Go, etc., often via S3-compatible libraries).
- REST APIs for custom integration into backend services.
Use Cases for Startups
1. Asset Storage for Web and Mobile Apps
Startups use B2 as the canonical store for:
- User-uploaded content (images, videos, documents)
- Static assets (product images, downloadable files)
- Generated reports or exports
Typically combined with a CDN in front to reduce latency and egress costs.
2. Backups and Disaster Recovery
B2 is popular for:
- Database backups (e.g., nightly dumps to B2)
- VM/server image backups
- Local NAS backups for small teams
This is often the first cloud storage many non-technical founders adopt because backup tools include B2 out of the box.
3. Media and Content Libraries
Media-heavy startups and agencies use B2 to store:
- Raw and processed video footage
- Podcast and audio archives
- Design asset libraries
The lower cost makes it feasible to keep large archives online instead of on external drives or expensive hot storage.
4. Analytics and Data Lakes
Data teams can:
- Store logs, clickstream, and event data as compressed files.
- Use S3-compatible connectors from ETL tools and analytics platforms.
- Build cost-effective data lakes for experimentation without high S3 bills.
5. Multi-Cloud and Cost Optimization Strategies
Infra teams sometimes:
- Keep primary workloads on AWS/GCP/Azure while offloading cold data to B2.
- Use B2 as a backup target to reduce vendor lock-in.
- Replicate from S3 to B2 using tools like rclone for cost savings.
Pricing
Backblaze B2’s pricing is one of its main selling points. Numbers can change over time, but the model is consistent: low per-GB storage, low egress, and free or cheap transactions.
Storage and Egress
| Cost Component | Backblaze B2 (Typical) | Notes |
|---|---|---|
| Storage | Low $/GB/month (often ~25–30% cheaper than S3) | Flat pricing by region; no storage tiers to manage. |
| Egress (Downloads) | Significantly lower than major hyperscalers | Discounted or free egress to partners like Cloudflare. |
| Class B Transactions | Often free up to large limits | Includes file uploads and certain API calls. |
| Class C Transactions | Low per 10,000 operations | Includes file downloads and some other API operations. |
Free Tier and Trials
Backblaze typically offers:
- A free trial period with a modest amount of storage and egress for evaluation.
- No long-term contracts; pay-as-you-go monthly billing.
Always check Backblaze’s current pricing page for exact numbers, as promotions and region-specific pricing can change.
Comparison vs AWS S3 for a Typical Startup Scenario
For a startup storing large volumes of cold data and moderate egress, B2 can provide meaningful savings.
| Scenario (Example) | Backblaze B2 | AWS S3 Standard |
|---|---|---|
| Storage: 10 TB of data | Lower monthly cost due to cheaper per-GB | Higher monthly cost; may push you to Glacier tiers |
| Egress: 1 TB/month | Cheaper egress; even lower with CDN partners | Higher per-GB egress fees |
| Complexity | Simpler pricing, fewer tiers | Many tiers and options to manage |
Pros and Cons
Pros
- Very competitive pricing for both storage and egress, often beating major clouds.
- S3 compatibility makes integration and migration easier.
- Transparent, simple billing with fewer surprises.
- High durability and reliability suitable for production use.
- Good tooling and integrations for backups, NAS devices, CDNs, and data tools.
- Solid documentation for developers and infrastructure engineers.
Cons
- Fewer regions and services than AWS/GCP/Azure (less global footprint, fewer adjacent services).
- No “full-stack” cloud ecosystem (no managed databases, functions, etc.)—it is storage-only.
- Less brand recognition among enterprises, which may affect procurement in some B2B contexts.
- Migration complexity if you are deeply tied to proprietary S3 features or AWS IAM patterns.
- Some advanced features (e.g., complex lifecycle policies, analytics) are not as extensive as hyperscalers.
Alternatives
| Service | Positioning | When to Consider |
|---|---|---|
| AWS S3 | Market-leading object storage with deep ecosystem | If you are already heavily on AWS and need tight integration with other AWS services. |
| Google Cloud Storage (GCS) | Object storage on GCP with strong data/ML integrations | If your analytics, ML, or data stack is primarily on GCP. |
| Azure Blob Storage | Object storage on Azure | If your stack or enterprise customers live on Azure. |
| Wasabi | Low-cost S3-compatible storage | If you want flat-rate pricing with no egress fees and can commit to some minimum usage. |
| DigitalOcean Spaces | Simple S3-like storage bundled in plans | If you already host your infrastructure on DigitalOcean and want convenience. |
Who Should Use It
Backblaze B2 is best suited for:
- Early-stage startups looking to minimize infrastructure costs while maintaining reliability.
- Bootstrapped companies that are very cost-sensitive but still need scalable storage.
- Media, content, and creative startups with large archives of video, audio, or design assets.
- Developer-focused products that store user-generated files, backups, or logs.
- Teams implementing multi-cloud or offsite backup strategies to reduce vendor lock-in.
It may be less ideal if:
- You need tight integration with a broader cloud ecosystem (e.g., Lambda, BigQuery, managed DBs).
- You require many geographic regions or advanced compliance certifications not yet offered in your region.
Key Takeaways
- Backblaze B2 is a low-cost, S3-compatible object storage option that can significantly cut storage and egress costs for startups.
- Its strength lies in simplicity, transparent pricing, and durability, not in being a full cloud platform.
- Common startup use cases include app asset storage, backups, media archives, and data lakes.
- B2 integrates well with CDNs, backup tools, and S3-based libraries, making adoption straightforward for most teams.
- For cost-conscious founders and operators, B2 is a strong candidate as either primary object storage or a cost-optimized secondary/backup store alongside a major cloud provider.
