Usually data transfers are as fast as our home internet bandwidht, thus you may use also a laptop disk to farm.
But you should leave your system on day and night, if you close your computer every night you will loose the contract of the stored data in your disk, thus no storj for you
May there is the possiblility that in the further development a drivespacehoster is able to offer his space only at a current timeframe of a day? That meens during a fixed frame there will be no heartneat check and he does not loose his contracts. So his PC dont have to be running all night long. Probably the customer dont need access to his data all night long?