Hi @davidkwan, this has been discussed and answered a few times before. You can search for ‘max size’ and check the Realistic earnings estimator for how long it would take to fill your node.
In short you’re not mining, just providing a service for which you are compensated. Due to the decentralised nature of the StorJ network having 1 PiB in one location is not helpful.
There is no official telegram group, but be careful of a few scam ones.