Synology
Synology SA6400 12-Bay Rackmount NAS with Redundant Power (Diskless)
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
Synology SA6400 is a 12-bay rackmount storage server engineered for scalability and performance. The high sustained throughput, the ability to scale up to 108 drive bays, and the comprehensive high-availability and data protection solutions available in Synology DiskStation Manager (DSM) make the SA6400 ideal for large storage deployments requiring lightning-fast data transfer speeds and dependable service uptime.
SpecPicks Verdict
SpecPicks classifies Synology SA6400 12-Bay Rackmount NAS with Redundant Power (Diskless) as a niche pick — read recent reviews before buying in the external storage category, based on limited Amazon review volume so far and our ranking model that weights rating × review-volume × price-fit. Synology's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Backed by Synology’s 5-year limited warranty.
- ✓ Backed by Synology's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Expandable up to 1.944 PB of storage (SATA-only) with up to 8 Synology RX1223RP Expansion Units.
- Over 6,500/4,000 MB/s sequential read/write throughput for efficient file transfer operations even in data-intensive scenarios.
- Built-in 10GbE RJ-45 ports for easy integration into any environment and support for 25/40GbE or Fibre Channel upgrades.
- Option to combine two identical devices into a Synology High Availability cluster for maximum service uptime and minute-level failover.
- Backed by Synology’s 5-year limited warranty.
Full Specifications
| Size | 3.46"(H) x 18.98"(W) x 28.5"(D) |
|---|---|
| Brand | Synology |
| Color | Black |
| Material | Metal |
| Model Number | SA6400 |
| Mounting Type | Rack Mount |
| Built-In Media | 1 x SA6400 main unit, 1 x Quick Installation Guide, 1 x Accessory pack, 2 x AC power cord |
| Mfr Part Number | SA6400 |
| Weight Capacity | Minimum weight: 100 Pounds |
| Compatible Devices | Server |
| Enclosure Material | Metal |
| Is Assembly Required | No |
| Warranty Description | 5 Year |
| EU Spare Part Availability Duration | 5 Years |
Ready to buy?
Synology SA6400 12-Bay Rackmount NAS with Redundant Power (Diskless) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-12. Price and availability subject to change.
Related External Storage
