The best-value centralised object store in this set - cheap, S3-compatible, no minimums and free egress up to 3x stored volume - with the recent $6.95 price and the multi-petabyte Overdrive commitment as the only caveats.
by the bestcloudmining editorial desk · review version 2 · prose updated 2026-09-24 · facts as of 2026-09-24 · how we verify
Backblaze B2 is a centralised, S3-compatible object storage service from public company Backblaze, Inc. (NASDAQ: BLZE), priced at $6.95/TB/month with free egress up to 3x stored volume. It’s ideal for users needing cheap, reliable hot storage without minimums. The caveat: durability claims are internal and not cryptographically verifiable.
You can rent S3-compatible object storage with no minimum file size, storage duration, or upfront commitment. Backblaze B2 offers pay-as-you-go and fixed-term plans (B2 Reserve, B2 Overdrive) with no GPU, mining, or blockchain-specific infrastructure. You get access to a scalable, always-hot storage tier with native SHA-1 integrity checks. You do not get self-custody, decentralisation, or proof your data is still stored.
Contract terms are flexible (pay-as-you-go) or fixed-term (B2 Reserve, B2 Overdrive), but the exact duration for fixed plans is not specified. There is no maintenance fee. Payout frequency and thresholds do not apply. Refunds follow the billing model: monthly usage is billed per byte-hour, while annual plans are paid upfront with rates locked. The 99.9% uptime SLA offers service credits as the sole remedy. Minimum purchase is $0 (first 10 GB free).
There is no customer-facing cryptographic proof that your data is stored or replicated as promised. Data integrity is handled via per-file SHA-1 hashes or S3 ETags, but the 11-nines durability claim (using Reed-Solomon 17+3) is an internal engineering assertion, not independently auditable. Cross-region replication is optional and paid, adding to risk if not enabled.
Backblaze is a NASDAQ-listed company founded in 2007, serving over 500,000 customers, which supports its operational credibility. It has a public status page and is widely used in self-hosting communities. However, the lack of external verification for durability is a red flag. Data quality is verified, but you must trust Backblaze as a centralised operator - there is no cryptographic proof of data persistence.
Pricing starts at $6.95 per TB per month, billed per byte-hour, with the first 10 GB always free. Egress is free up to 3x your average monthly storage, then $0.01/GB. Class D API calls cost $0.004 per 10,000 (first 2,500/day free). B2 Overdrive starts at $15/TB/mo with unlimited egress but requires multi-petabyte commitments. Payments are fiat-only, KYC is required, and there are no crypto options.
Backblaze B2 is the best-value centralised S3 storage reviewed, offering low cost, no minimums, and generous free egress. However, you must trust Backblaze’s internal durability claims. It’s a strong choice for cost-sensitive users who accept centralised custody, but not for those requiring verifiable, decentralised storage.
| Documented price | $6.95 per TB/mo · $0.010 per GB egress above 3x stored volume |
|---|---|
| Notes | Observed 2026-09-24 on the B2 pricing page: $6.95/TB/mo billed per byte-hour over a 30-day month; first 10 GB storage always free; egress free up to 3x average monthly storage then $0.01/GB; Class A/B/C API calls free, Class D $0.004 per 10,000 (first 2,500/day free); no minimum file size or storage duration fees. B2 Overdrive from $15/TB/mo with unlimited free egress but a multi-petabyte commitment. Annual capacity (B2 Reserve) billed at contract start, 1-5 year terms; independent comparison cites from ~$19,500 for 250 TB/yr. Price has risen from the long-standing $6/TB. |
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Based on our checks as of 2026-09-24: Backblaze B2 (legacy cloud benchmark) scores 8.6/10 in our weighted review. We logged 1 red flag (listed above). User reports and operator background are documented with dated sources in the meta-review below.
You get S3-compatible object storage with no minimums, SHA-1 integrity checks, and 99.9% uptime SLA. You do not own the hardware or get cryptographic proof your data is stored.
$6.95/TB/month, free egress up to 3x stored volume, then $0.01/GB. Class D API calls are $0.004 per 10,000 (first 2,500/day free). No hidden fees, but fixed-term plans require upfront payment.
No minimum purchase - first 10 GB storage is always free. You can start without a credit card, making it easy to test at zero cost.
Payouts do not apply - this is storage, not mining or compute. You pay for space and bandwidth, not earn from it.
If Backblaze ceases operations, your data could be lost unless you’ve backed it elsewhere. There’s no self-custody or decentralised failover.
It’s cheaper and simpler than buying hardware, but less secure than decentralised storage with provable replication. You trade control for convenience and low cost.
Single-tier S3-compatible object storage at $7.99/TB/mo with no egress or API fees, a 1 TB monthly minimum and 90-day minimum retention.
Centralised hyperscaler object storage: 11-nines durability design and a 99.9% SLA, but ~$23/TB plus $0.09/GB egress and fiat-only payment.
S3-compatible distributed object storage at $7/TB/mo with $7/TB egress and no API fees; operating under Chapter 11 after the Inveniam acquisition.
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