Suppose I have XFS as a file system and I would use SEAGATE Enterprise Capacity 10TB SATA drives. Due to the XFS file system there can at most be 800 disks in one file system. What are other limitations?
For example, you need to power / cool them properly and connect them. I've seen the FANTEC QB-35US3-6G which allows you to put 4 disks in it and then connect it via eSATA to a PC. Hence the limit how much storage you can get with off-the-shelf solutions would be much lower at 40 TB.
Background of the question
This question is just out of curiosity. I'm a machine learning developer. The datasets are becoming really massive (example). I just would like to know what the current state is; at which amount does it become really expensive / difficult to handle the data? So far, it seems like < 10 TB is relatively simple, < 40 TB might still be ok.