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NASync DXP2800 + 2 × 4TB IronWolf
A checked starting combination targeting about 4TB usable with raid 1-style single-drive redundancy.
Lowest checked total$626.17Newegg + Amazon
Lowest one-store total$749.97Newegg
Approx. usable4TB
Checked value$156.54/TB
What the bundle contains
Capacity and redundancy
The mirror can continue after one drive fails; back up irreplaceable media metadata and personal files elsewhere.
Approximation: $(2 - 1) × 4TB = 4TB$. Filesystem formatting, system partitions, snapshots, and RAID implementation reduce displayed free space.