Dual parity, 64TB planning capacity, ECC memory, and two open bays suit a genuinely large household archive.
Watch: Do not buy this tier without a measured growth forecast, UPS plan, off-site copy, and restore procedure.
DSM 7.3 third-party drive policy; verify exact MPNCompare component stores →
DS1825+ + 6 × 16TB IronWolf Pro
A checked starting combination targeting about 64TB usable with shr-2 / raid 6-style dual-drive redundancy.
Price estimate — recheck required$5,029.93Adorama + Amazon
Historical price estimate · one store$5,329.93Newegg
Approx. usable64TB
Price estimate — recheck required / TB$78.59/TB
At least one component price or stock record needs checking. Confirm store prices and availability; tax and shipping are extra.
NAS: historical price · Sep 27, 2026. Drives: needs checking · Sep 17, 2026.
One-store estimate. This total estimates separate component purchases using older price records. Recheck prices and stock; tax and shipping are extra.
NAS: historical price · Oct 9, 2026. Drives: historical price · Oct 7, 2026.
Prices exclude tax and shipping · checked Sep 17, 2026
Why this exact build
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.