That only shows the storage up to your quota, in my case: 299.9 MB (100%). Where can I see how much storage I need to buy to have my whole database online?
In your OS's file manager, check the total size of all the files under the Zotero\storage hierarchy. That is roughly what you would need. That \storage folder is in your Zotero data folder. https://www.zotero.org/support/zotero_data
Thank you. I already found it that way. But in Mendeley there seems to be a big difference between the size of the locally stored files (5.8 GB) and what I see in my online account (10.4 GB). So, I was not sure if a subscription for 6 GB would be enough. But if you say I roughly need 5.8 GB, I'll try the 6 GB.
Upgrade Storage
https://www.zotero.org/support/zotero_data
I already found it that way. But in Mendeley there seems to be a big difference between the size of the locally stored files (5.8 GB) and what I see in my online account (10.4 GB).
So, I was not sure if a subscription for 6 GB would be enough. But if you say I roughly need 5.8 GB, I'll try the 6 GB.