Atlas wasn't giving us any support for $3K per month. Hetzner at least have some channel to contact them, which is an improvement. That said, if their uptime is rubbish them we'll probably migrate again. Moving back to Atlas is not an option as we were getting hammered by the data transfer costs and this was only going to increase due to our architecture. Thanks for reading!
500GB isn't a lot of data, and $3K/month seems like an extortion for that little data.
Having said that, MongoDB pricing page promises 99.995% uptime, which is outstanding, and would probably be hard to beat that doing it oneself, even after adding redundancy. But maybe you don't need that much uptime for your particular use case.
Yep, we just migrated to Atlas, and the disk size limitation of the lower instance tiers pushed us to do a round of data cleaning before the migration.
Also, we noticed that after migration, the databases that were occupying ~600GB of disk in our (very old) on premise deployment, were around 1TB big on Atlas. After talking with support for a while we found that they were using Snappy compression with a relatively low compression level and we couldn't change that by ourselves. After requesting it through support, we changed to zstd compression, rebuilt all the storage, and a day or two later our storage was under 500GB.
And backup pricing is super opaque. It doesn't show concrete pricing on the docs, just ranges. And depending on the cloud you deployed, snapshots are priced differently so you can't just multiply you storage by the number of the snapshots, and they aren't transparent about the real size of the snapshots.
