DSM 7.3 third-party drive policy; verify exact MPN
DS1825+ + 6 × 16TB IronWolf Pro
A checked starting combination targeting about 64TB usable with shr-2 / raid 6-style dual-drive redundancy.
Lowest checked total$4,689.93Newegg + Amazon
Lowest one-store total$4,689.93Newegg
Approx. usable64TB
Checked value$73.28/TB
What the bundle contains
Capacity and redundancy
The six-drive pool can continue after two drives fail and leaves two bays open; RAID is not a backup.
Approximation: $(6 - 2) × 16TB = 64TB$. Filesystem formatting, system partitions, snapshots, and RAID implementation reduce displayed free space.