Hi I am interested but i have a few questions
1. Someone earns storjcoins based on the amount of the available GB he has on his hard drive?
2. Can this be an empty external hard drive?
3. How many storj per 1gb at the moment?
4. People store data on my hard drive. Are those data backed up anywhere else? What will happen if I decide to turn off my hard drive? Will people lose their data?

Thanks