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Synology SA6400 12-Bay Rackmount NAS with Redundant Power (Diskless)
Synology

Synology SA6400 12-Bay Rackmount NAS with Redundant Power (Diskless)

Status: Synology SA6400 12-Bay Rackmount NAS with…: Unavailable on Amazon as of . SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Synology SA6400 12-Bay Rackmount NAS with Redundant Power is a specs-and-price decision rather than a crowd-consensus one in the external storage category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For external drives and portable storage, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Backed by Synology’s 5-year limited warranty.
  • ✓ Backed by Synology's warranty and support channels

Cons

  • ✗ Check the listed dimensions, connectors and platform compatibility against your setup before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

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.

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SpecPicks Verdict

SpecPicks scored Synology SA6400 12-Bay Rackmount NAS with Redundant Power using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Synology's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

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

Size3.46"(H) x 18.98"(W) x 28.5"(D)
BrandSynology
ColorBlack
MaterialMetal
Unit Count1 Count
Model NumberSA6400
Mounting TypeRack Mount
Built-In Media1 x SA6400 main unit, 1 x Quick Installation Guide, 1 x Accessory pack, 2 x AC power cord
Mfr Part NumberSA6400
Weight CapacityMinimum weight: 100 pounds
Compatible DevicesServer
Enclosure MaterialMetal
Warranty Description5 Year
EU Spare Part Availability Duration5 years

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Amazon shows no buyable offer for Synology SA6400 12-Bay Rackmount NAS with… at the last check. An Amazon search for this model lists current offers. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Synology SA6400 12-Bay Rackmount NAS with Redundant Power (Diskless)
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