There are no explicit limits to downloads or uploads, instead it depends on demand. So generally speaking, If more Storj customer upload more data, your node will download more and if more Storj customers download more data, your node will get more upload.
Apart from demand, how much download traffic an individual node is going to see of that demand depends on two things:
- How many nodes there are in the network with free space
- Which
/24addresses those nodes have
The upload traffic for a specific node depends on how much the pieces your node stores are downloaded by customers. This can vary based on the age of your node, the mix of use cases that were active when your node was filling, etc.