How do you deal with the fact that the amount of data that can be stored in one blockchain department is strictly limited?
That's right.
The blockchain is very expensive and heavy network.(but safe)
What gets recorded onto the blockchain is the hashed value of healthcare data. In other words, if healthcare data is stored in the MediBloc, the hashed value on MediBloc is saved on blockchain.
Healthcare data will be stored in a distributed database outside the blockchainsuch as IPFS.