Please note that the block_log is roughly 500GB, downloading it could take a significant amount of time (6-12 hours even with a decent network connection)
Seeing this, maybe it is better to have more than 1 TB storage. People often store and run multiple things on their servers.
Sure, but that depends on use case. People who run hived node should know what they are doing. For example running a witness node assumes that nothig else runs on the same machine.