Our philosophy: backup all data so you don't have to pick and choose.
All Your Data
With the exception of your operating system, applications, and temporary files.
Unlimited File Size
By default, files up to 4 GB. This setting can be raised or lowered in the settings panel. iPhoto, Aperture and Lightroom will be backed up at any size.
Connected Drives
USB and Firewire hard drives connected at the time of the install or added later in the settings panel. Network drives (NAS) are not backed up.
Sign in to see exactly which files have been backed up.
What We Don't Backup
Backblaze does not want to waste your bandwidth or Backblaze datacenter disk space. Thus, we do not backup your operating system, application files, or temporary internet files that are transient and would not be useful in the future. Backblaze also excludes podcasts in iTunes.
Certain Filetypes
You can see these exclusions by clicking on “Settings…” in the Backblaze Control Panel and selecting the Exclusions tab. They can be removed in Backblaze 2.0! Some of these excluded files are:
ISO (Disk Images)
VMC VHD VMSN (Virtual Drives)
SYS (System Configuration & Drivers)
EXE (Application Files).
Other Backup Programs
Backblaze also doesn't backup backups like Time Machine and Retrospect RDB.
Deleted Files
Backblaze will keep versions of a file that changes for up to 30 days. However, Backblaze is not designed as an additional storage system when you run out of space. Backblaze mirrors your drive. If you delete your data, it will be deleted from Backblaze after 30 days.
