Is Backblaze really unlimited?
The short answer
Yes, it really is. Backblaze Personal Backup has no storage cap, no file-count limit and no throttling tiers. Some users have more than 100 TB backed up. The limits are in the design. One license covers one computer plus its attached external drives. It does backup only, with no sync or sharing. Version history is 30 days by default, and longer retention costs a little extra.
In detail
Backblaze’s unlimited promise has held since 2007. The company stores exabytes and publishes its infrastructure economics openly in its Hard Drive Stats reports. It has never added soft caps or fair-use clawbacks to the personal backup product. People back up entire video-production archives with it.
The boundaries are design choices. One license covers one machine. A second computer needs a second subscription. Households with several devices often fit IDrive better. Attached external drives are included. Connect each drive at least every 30 days or its backup ages out. Network drives and NAS are not part of the personal product. It is also strictly backup. There is no folder syncing, link sharing or mobile backup. Your phone needs its own solution.
The one setting worth a look is version history. The default is 30 days. That is a short window if ransomware or silent file corruption goes unnoticed for three months. One year of history costs a couple of dollars a month extra. "Forever" versions cost a little more. We think one year is the right setting for almost everyone. With that switched on, Backblaze is what it has been for nearly two decades. It is the simplest answer in backup, and its unlimited really means unlimited.