TrueNAS TrueCloud Backup Tasks - increases Storji download

TrueNAS General
1

Did ask these questions in the Storji-forums, but maybe TrueNAS-forum could have som answers:
Have setup TrueNAS Scale 25.04.2.1 to backup with TrueCloud Backup Tasks = Storji.

As options I have “Keep last: 2”, and no snapshots.

(Not the Cloud Sync Task option, but the real Backup Task option).

The backup-folder used in TrueNAS have not changed at all or in size this week - no new files. After running the backup everyday for testing, I log in on Storji to view my account.

The “Storage” used is constant i.e. 2.33TB, but the “Download” used does increase with 1-1.5GB after every backup.

No problems, incredibly fast backup - maxing out my 500/500 fiber, and also when testing restore. As I understand the Storji pricing, uploading have no costs other than storage size, but downloading will cause a further cost.

Does this mean that every time I run the TrueCloud Backup-Task from TrueNAS it will cost money - even when there is nothing new to backup?

This “download” from Storji is probably reading all file-names in the Storji-bucket-folder to check for differences before TrueCloud can back-up?

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I’m looking for the same answer as you. I’ll follow this tread for anybody that chimes in.
As another data point, I have about 7 TB of data backed up using a TrueCloud Backup Task. I have it set to backup nightly and I’m seeing ~1.3 GB of download per day.

It’s only been 2.5 days since I set it up so I’m waiting to see if this evens out to a certain value or drops. The first day was 1.4 GB and the 2nd day was 1.2 GB and I’m not exactly sure when the initial upload finished. I’m hoping it was just some kind of upload checksum.