Backblaze has built its name on a simple promise that most of the storage industry avoids: genuinely unlimited backup for one computer at a flat, predictable price. It comes in two distinct flavors, the consumer-focused Personal Backup service and the developer-focused B2 Cloud Storage, and it is important not to confuse them. This review takes a research-based look at what Backblaze actually delivers in 2026, who it suits, and the very specific limits you need to understand before relying on it.
The short version is that Backblaze Personal Backup is close to the ideal set-and-forget backup: install it, and it quietly protects your machine with no data caps to worry about. The catches are that it is licensed strictly per computer, it handles external drives on its own terms, and it is a backup tool rather than a sync or file-sharing service.
What it does well
The standout is the genuinely unlimited model. For a single flat subscription, Personal Backup covers one computer with no ceiling on how much you store. If you are a photographer, videographer, or anyone sitting on a large and growing library, that is a rare and valuable proposition, because most cloud services meter you by the gigabyte and get expensive fast. Backblaze does not, and for a single busy machine that predictability is the whole point.
The second strength is how little it asks of you. By default, Backblaze backs up nearly everything on your computer rather than making you hand-pick folders, so setup is close to effortless. Once installed, it runs continuously in the background, uploading new and changed files without supervision. For the many people who never get around to configuring a complicated backup plan, this hands-off approach is exactly what makes a backup actually happen instead of remaining a good intention.
Restore options are another bright spot. You can pull back individual files by download, request a web ZIP of a larger selection, or, crucially, order a physical drive shipped to you preloaded with your data. When you have lost terabytes and a home internet connection would take days to redownload them, that mailed-drive option is a genuine lifesaver, and Backblaze refunds the drive fee if you return it in time. For developers and businesses, the separate B2 Cloud Storage rounds out the lineup with a low-cost, S3-compatible object store from the same company, usable through APIs, a command line, and standard S3 tooling.
Where it falls short
The biggest limitation is the per-computer licensing. Personal Backup covers exactly one machine per subscription, so a household with a laptop and a desktop, or a family with several computers, pays for each one. For a single-machine user this is a non-issue, but for multi-device homes it changes the value calculation considerably, and you should count your machines before assuming it is cheap.
External drives are handled on Backblaze’s terms. They can be included in a backup, but they must be connected to your computer periodically or their data is eventually purged from the cloud copy. If you have an archive drive you only plug in occasionally, this policy can quietly leave it unprotected, so it is important to understand rather than discover after a loss.
Two more constraints matter. Older versions of your files expire after a set window unless you pay for extended version history, which is worth enabling if you want long-term protection against a file being silently corrupted or encrypted. And, most fundamentally, Backblaze Personal Backup is not a sync or file-sharing service. It does not mirror folders across devices or offer collaborative shared folders the way Dropbox or Google Drive do. Buying it expecting Dropbox behavior is the single most common way to be disappointed.
Pricing
Backblaze splits pricing across its two products. Personal Backup is sold as a flat per-computer subscription, billed monthly, yearly, or on a two-year term, with the longer commitments lowering the effective monthly cost and unlimited data included at every interval. B2 Cloud Storage, by contrast, is pay-as-you-go, billed per gigabyte stored and per gigabyte downloaded, which suits developers who want to pay only for what they use. A free trial is available for Personal Backup so you can confirm it fits before committing. As always, rates and terms shift over time, so treat any specific figure as indicative and check current pricing on Backblaze’s own site.
Who it’s for (and who should skip it)
Backblaze Personal Backup is an outstanding fit for an individual who wants dead-simple, unlimited, hands-off protection for one computer, especially creatives with large media libraries who would pay a fortune under metered pricing. Developers and businesses that need cheap, programmatic, S3-compatible storage are well served by B2. In both cases you are getting a focused tool that does one job well.
You should skip it, or at least look elsewhere first, if you need to protect many computers cheaply, if you want folder sync and file sharing across devices, or if your critical data lives on a NAS or server that Personal Backup does not cover. Users who occasionally plug in archive drives also need to be careful, given the connection requirement. These are not defects so much as boundaries of a deliberately narrow product.
The verdict
Backblaze earns its reputation by doing something most competitors will not: offering truly unlimited, no-fuss backup for a single computer at a flat price, backed by flexible restore options including a mailed drive. The honest caveats are its strict per-machine licensing, its specific rules around external drives and version history, and the fact that it is backup, not sync. Weigh those against your needs: if you want a reliable safety net for one machine and understand what it is not, Backblaze is one of the easiest recommendations in cloud backup, and the free trial makes it simple to confirm before you commit.
