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Backblaze B2 Cloud Storage Review

Depends

Should I use Backblaze B2 Cloud Storage?

High-throughput, S3-compatible object storage pitched at AI workloads, neoclouds, and GenAI developers. - backblaze.com

· 1 month ago

Buy it if you're a developer or AI team moving terabytes and want S3 compatibility at a fraction of AWS prices. Skip it if you need simple file sync, consumer-grade apps, or verified support SLAs.

Confidence

Medium. Based on ~9 usable public sources; many search results were unrelated noise, and no numeric review ratings or full pricing pages were captured.

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support qualityNo evidence in sources
  • Security posture

Pricing

B2 Cloud Storage

Vendor claims ~1/5 of AWS S3 pricing

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed

Best for

  • AI/ML teams training on large datasets
  • Backup targets for servers and NAS
  • Budget S3 replacement for developers
  • Neocloud infrastructure builders

Not for

  • Non-technical users wanting simple file sync or sharing
  • Small projects that fit in Dropbox or Google Drive
  • Buyers needing verified support SLAs and compliance docs up front
  • Anyone unwilling to work with S3 APIs and tooling

Gotchas - check before you buy

medium

'Fifth of S3 cost' and 'free egress' are vendor claims — validate against your own workload

medium

Crawler found no security page at request SOC 2 and compliance docs directly

medium

Leaving any object store means bulk transfer time and cost, despite 'no lock-in' marketing

low

No concrete per-TB pricing captured in sources; confirm current rates and free-tier details before committing

Pros and cons

Pros

  • Reviewers praise B2's affordability, simplicity, and reliability
  • Vendor claims S3-level performance at one-fifth of AWS cost, free egress
  • S3-compatible: existing tools, SDKs, and code keep working
  • Proven AI scale: Decart grew 0 to 16PB in 90 days, 10x training speedup
  • Works well as secondary storage in corporate backup strategies

Cons

  • Cost and performance claims are vendor-reported, not independently benchmarked
  • Raw object storage only — no sync, sharing, or consumer apps
  • Homepage pivots hard to AI and enterprise; small buyers get little guidance

Sources & method

- 9 sources - No known vulnerabilities found in the sources reviewed; UpGuard shows hardened TLS with no FREAK exposure.

official x2review x3security x1news x3

Key stats

  • Value for money: 5/5

    Rating

  • Vendor claims ~1/5 of AWS S3 pricing

    Starting price

  • 9

    Sources

  • Analyzed

  • Value for money: 5/5. Vendor claims 1/5 of S3 cost; reviewers confirm affordability
  • Ease of use: 4/5. Reviewers cite simplicity and reliability
  • Feature depth: 4/5. S3-compatible, high-throughput, proven at 16PB AI scale
  • Support quality. No evidence in sources
  • Security posture: 4/5. UpGuard shows hardened TLS; no known CVEs surfaced
  • ~1/5 Cost vs AWS S3 vendor claim, with free egress
  • +24% B2 revenue growth ARR +28% on AI demand
  • $335M CoreWeave contract enterprise storage deal
  • 16PB in 90 days Decart scale-up 10x faster model training

Pricing

B2 Cloud Storage

Vendor claims ~1/5 of AWS S3 pricing

  • S3-compatible object storage
  • Free egress per vendor claims
  • High-throughput for AI workloads

Security

No known vulnerabilities found in the sources reviewed; UpGuard shows hardened TLS with no FREAK exposure.

What users say

Users consistently praise B2's price, simplicity, and reliability, especially as a backup target.

“Reviewers like the affordability, simplicity, and reliability of Backblaze B2 Cloud Storage”
G2 review summary
“Backblaze B2 is great as an alternate medium for a corporate backup strategy”
TrustRadius user review

Alternatives

Compare Backblaze B2 Cloud Storage with each alternative.

  • AWS S3

    The default; pricier but deepest ecosystem

  • Wasabi

    Budget S3 competitor named in evidence; compare egress terms

    Backblaze B2 Cloud Storage vs Wasabi

  • Cloudflare R2

    S3-compatible with zero egress fees; worth benchmarking

  • Google Drive / Dropbox

    For simple file sync without developer tooling

Companies that use it

Full analysis

Based on ~9 usable public sources; many search results were unrelated noise, and no numeric review ratings or full pricing pages were captured.

Genuinely cheap, S3-compatible object storage that shines for AI and backup workloads — overkill if you just want file sync.

Methodology

Based on ~9 usable public sources; many search results were unrelated noise, and no numeric review ratings or full pricing pages were captured.

Read how a report is made.

Sources

  1. Backblaze homepagebackblaze.com
    official
  2. Backblaze B2 Cloud Storage Reviews — G2ai.g2.com
    review
  3. Backblaze B2 — Capterracapterra.com
    review
  4. Backblaze B2 Reviews — TrustRadiustrustradius.com
    review
  5. Backblaze offers low-cost, fast B2 cloud storage tierblocksandfiles.com
    news
  6. CoreWeave enlists Backblaze for massive cloud storage dealsdxcentral.com
    news
  7. Backblaze says AI demand is driving faster B2 growthfinance.yahoo.com
    news
  8. Backblaze case studies (Decart)welcome.ai
    official
  9. Backblaze Security Rating — UpGuardupguard.com
    security

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