Please note this is against TOS I do not take responsibility if you get banned.
Backblaze Personal, as most of you know, is my recommended cloud backup platform. It’s cheap and has unlimited storage. The thing is you cannot use it on storage that isn’t direct connected to the machine. In order to bypass this limitation and backup your NAS you can use the Dokan library which spoofs your machine into believing that the network drive is a direct attached disk.
The best way I have found to do this is to create a service using NSSM:
Download NSSM and install it
Download Dokan and Install it
Create a service using the command nssm install <servicename>
Path should be C:\Program Files\Dokan\Dokan Library-2.1.0\sample\mirror
Arguments should be -r <IP Address of share> \Data -l V
You will need to create a service for each share.
After that just add the drive in Backblaze like a standard drive.
UPdate 6/15/25
For windows you want to do this type of config replace with your own variables
Set login to user as opposed to system account

/v “pictures” /r “\10.0.0.5\pictures” /l A
Please note this is against TOS I do not take responsibility if you get banned.
This is day 23 of #100DaysToOffload
Thanks for the update!
Trying this myself, running on Windows 10 machine. I am confused as to what the variables are.
Original Post: -r \Data -l V
Update Post: /v “pictures” /r “\10.0.0.5\pictures” /l A
The updated post is whats working for me
You can change pictures to whatever you want to call it
Change the \10.0.0.5\pictures to whatever your network share is
Change A to the drive letter you want it to show up as