Since the size of bit is known so we have KB, MB, GB and so on. However if we are not able to measure human brain storage capacity on the basic level (like bit in case of computers) how can we define a Humabyte?
according to this "Harvard cracks DNA storage, crams 700 terabytes of data into a single gram"
They claim that each GRAM of DNA has an equivalent of 700 TB that's not counting the brain storage capacity or the organs storage capacity (each organ has tremendous storage capacity, and it seems it can be access by the nerve system of any human host. In transplant of hearts, livers, lungs, etc., the patient can describe what the original human host was like in terms of personality, memories, and actions)
Taking all of this information, scholar should be able to calculate a raw average of the human storage capacity - Humabyte.