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Synology DiskStation DS420j NAS Server with 1.4GHz CPU, 1GB Memory, 40TB HDD Storage, 1 x 1GbE LAN Port, DSM Operating System…
Synology

Synology DiskStation DS420j NAS Server with 1.4GHz CPU

Bottom line: The Synology DiskStation DS420j NAS Server with 1.4GHz CPU is a specs-and-price decision rather than a crowd-consensus one in the external storage category, priced around $2089.00 on Amazon as of 2026-10-07. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

$2089.00

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Buy on Amazon — $2089.00 Compare to similar external storage

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.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Operating System: Synology DSM Software
  • ✓ 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 DiskStation DS420j is made for a variety of server roles, such as home-based data backup, file syncing, and sharing. Form Factor: NAS Tower ServerInternal File System Format: EXT4Ports: 1 x RJ-45 1GbE LAN Port (with Link Aggregation/ Failover support); 2 x USB 3.2 Ports; EXT4 File System for Advanced LUN iSCSI ServiceProcessor: RTD1296 4-Core 1.4GHz CPUMemory: 1GB DDR4 non-ECC MemoryStorage: 40TB (4 x 10TB) SATA 3.5" HDDs for High-Capacity StoragePower: Single Power SupplyOperating System: Synology DSM SoftwareIdeal for VM & container storage, lightning-fast file sharing, & an…

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SpecPicks Verdict

SpecPicks scored Synology DiskStation DS420j NAS Server with 1.4GHz CPU 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

  • Synology DiskStation DS420j is made for a variety of server roles, such as home data backup, file syncing, and sharing. A high-capacity powerhouse capable of fitting into most any environment, making it easy to centralize all your multimedia collections with rigorous workloads.
  • RTD1296 4-Core 1.4GHz CPU; 1GB DDR4 non-ECC Memory; 40TB (4 x 10TB) SATA 3.5" HDDs for High-Capacity Storage; 1 x RJ-45 1GbE LAN Port (with Link Aggregation / Failover support); 2 x USB 3.2 Ports; EXT4 File System for Advanced LUN iSCSI Service
  • Operating System: Synology DSM Software
  • Synology NAS chassis comes in a sealed box.
  • Hard drives and memory upgrades included separately not installed, installation required

Full Specifications

BrandSynology
ConnectivityUSB
Model NumberDS420j
Number of Items1
Warranty DescriptionManufacturer
Full listing titleSynology DiskStation DS420j NAS Server with 1.4GHz CPU, 1GB Memory, 40TB HDD Storage, 1 x 1GbE LAN Port, DSM Operating System…

Ready to buy?

Synology DiskStation DS420j NAS Server with 1.4GHz CPU, 1GB Memory, 40TB HDD Storage, 1 x 1GbE LAN Port, DSM Operating System… is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $2089.00

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

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Synology DiskStation DS420j NAS Server with 1.4GHz CPU, 1GB Memory, 40TB HDD Storage, 1 x 1GbE LAN Port, DSM Operating System…
$2089.00
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