What drives work in the Synology DS423+?
The DS423+ is a four-bay NAS that takes four 3.5-inch or 2.5-inch SATA drives plus two M.2 NVMe slots for cache. Use any CMR NAS drive — WD Red Plus/Pro, IronWolf, Toshiba N300. It pre-dates the 2025 drive policy, so third-party drives are unrestricted.
Last verified July 22, 2026 · 1 official source checked Updated
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The Synology DS423+ is a four-bay NAS. It holds four 3.5-inch or 2.5-inch SATA drives and has two M.2 2280 NVMe slots for SSD cache.
Drive-compatibility policy for this model
The DS423+ pre-dates the 2025 drive policy and never required Synology-listed drives. Any third-party CMR NAS drive works for new storage pools; the compatibility list is advisory.
Recommended CMR picks
- General / home: WD Red Plus or IronWolf.
- Plex / media: the DS423+ uses an Intel CPU with an iGPU, so it can hardware-transcode — pair it with quiet CMR drives; capacity matters more than drive speed here.
- Bulk value: Toshiba N300 or Seagate Exos.
What to avoid
- SMR drives — they stall four-bay rebuilds.
- Desktop drives — not 24/7-rated.
SHR or SHR-2 gives flexible redundancy across four bays. The table lists in-stock CMR drives by price per terabyte.
Compatible drives for the DS423+, by CA$/TB
Live Amazon.ca prices in CAD, ranked by price per terabyte. The Recording column is verified against manufacturer documentation.
Related questions
Sources
Every technical claim on this page is checked against manufacturer and standards documentation. Dates are when each source was last reviewed.
- Synology — Products Compatibility List (per-model drive search) — checked 2026-07-22