The problem ZeroSync solves is orthogonal to the issue of hard drive space. If someone is worried about hard drive space they can run a pruned node -- the full history and all future blocks are still fully validated, just not stored on the hard drive.
The problem ZeroSync solves is orthogonal to the issue of hard drive space. If someone is worried about hard drive space they can run a pruned node -- the full history and all future blocks are still fully validated, just not stored on the hard drive.