The sweet spot for drives is the 4Tb at about $100[1]. Seven of those will give you 28 raw Tb with $300 left over for case and power supply. So not impossible

The sweet spot for drives is the 4Tb at about $100[1]. Seven of those will give you 28 raw Tb with $300 left over for case and power supply. So not impossible. [1] https://www.backblaze.com/blog/hard-drive-cost-per-gigabyte/ https://www.backblaze.com/blog/hard-drive-cost-per-gigabyte/