I want to use Google Cloud with Duplicati. Details of Google’s pricing are here: https://cloud.google.com/storage/pricing
You pay for at-rest storage, for operations and for egress. So my question is how many transactions and how much egress can I expect Duplicati to need? Can I optimize it?
Obviously I’m not including the cost of restoring data, just incremental backups.
For example using Archive storage in Europe:
Storage: $0.0012 per GB per month
Operations: $0.50 per 10,000
Egress: $0.17 per GB
Note that the egress cost includes both the network cost and the retrieval cost!
My understanding is that Duplicati will download one block for verification each time the backup is run, so if I used a block size of say 512MB and ran the backup once a week it would cost $0.34 in egress fees, negligible operation fees and the data storage fee.
That seems quite cheap. Have I got that right?