Synology DS423+ vs Synology DS1522+ Black Friday 2026 Deals

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Synology DiskStation DS423+ 4-Bay NAS and Synology DiskStation DS1522+ 5-Bay NAS are two capable choices for private cloud storage, backups, and shared files. The DS423+ keeps a four-bay system straightforward for home users, while the DS1522+ adds a fifth bay, ECC memory, and a network upgrade path for growing storage demands. Both run Synology’s DiskStation Manager software and support a broad range of backup and file-management tasks.

For this Black Friday 2026 guide, we researched and compared specs, reviews and owner feedback to identify which NAS fits each use. My pick for most people is the DS423+ when four bays and accessible setup are enough; the DS1522+ is the stronger fit for expansion and heavier multi-user use. The guide also compares five alternatives, explains the important specs, and highlights what to check before buying drives.

How We Picked

• Compared drive-bay counts, expansion options, memory, processors, and network connections.
• Considered home backup, media libraries, shared work files, and small-business storage needs.
• Reviewed official product specifications alongside published reviews and owner feedback.
• Prioritized useful upgrade paths and clear differences between models in the same product family.

Comparison Table

Product	Best for	Drive bays	Memory	Network
Synology DiskStation DS423+ 4-Bay NAS	Home backups and media libraries	4	2GB DDR4	2 x 1GbE
Synology DiskStation DS1522+ 5-Bay NAS	Small offices and expansion	5	8GB ECC DDR4	4 x 1GbE; optional 10GbE
Synology DiskStation DS923+ 4-Bay NAS	Four-bay users seeking ECC memory	4	4GB ECC DDR4	2 x 1GbE; optional 10GbE
Synology DiskStation DS224+ 2-Bay NAS	First-time NAS buyers	2	2GB DDR4	2 x 1GbE
Synology DiskStation DS723+ 2-Bay NAS	Compact business storage	2	2GB ECC DDR4	2 x 1GbE; optional 10GbE
Synology DiskStation DS1621+ 6-Bay NAS	Growing offices	6	4GB ECC DDR4	4 x 1GbE; PCIe expansion
Synology DiskStation DS1821+ 8-Bay NAS	High-capacity storage	8	4GB ECC DDR4	4 x 1GbE; PCIe expansion

Best Picks Reviewed

#1 · Top pick

Synology DiskStation DS423+ 4-Bay NAS

The Synology DiskStation DS423+ 4-Bay NAS is the best balanced NAS for home users who want four drive bays without a larger business-oriented system. The Intel Celeron J4125 processor and two M.2 slots support a versatile storage setup.

Best for: Home backups, shared files, and media libraries

Drive bays

4

Processor

Intel Celeron J4125, 4 cores

Memory

2GB DDR4, expandable to 6GB

Network

2 x 1GbE

Pros

• Four bays provide room for a flexible RAID setup.
• Two M.2 slots support SSD cache configurations.
• Synology DSM offers backup and file-sharing apps.

Cons

• Two 1GbE ports lack a built-in faster Ethernet connection.

Is the Synology DiskStation DS423+ 4-Bay NAS worth buying on Black Friday 2026?

Yes. The Synology DiskStation DS423+ 4-Bay NAS is a strong Black Friday 2026 choice for home storage, with four drive bays, two M.2 slots, and Synology DSM. Pick it when four-bay capacity matters more than ECC memory or 10GbE expansion.

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#2

Synology DiskStation DS1522+ 5-Bay NAS

The Synology DiskStation DS1522+ 5-Bay NAS is the best expandable NAS for small teams and growing storage libraries. The Synology DiskStation DS1522+ 5-Bay NAS's five drive bays, 8GB of ECC memory, and optional 10GbE adapter support a longer upgrade path.

Best for: Small offices and expandable storage

Drive bays

5

Processor

AMD Ryzen R1600, 2 cores

Memory

8GB ECC DDR4, expandable to 32GB

Network

4 x 1GbE; optional 10GbE

Pros

• Fifth bay adds capacity without immediate expansion hardware.
• ECC memory suits a storage server used by a team.
• Optional 10GbE adapter provides a faster network upgrade.

Cons

• The Ryzen processor lacks integrated graphics for some media workflows.

Is the Synology DiskStation DS1522+ 5-Bay NAS worth buying on Black Friday 2026?

Yes. The Synology DiskStation DS1522+ 5-Bay NAS is worth considering for teams that need five bays, ECC memory, and an upgrade path to 10GbE. The Synology DiskStation DS1522+ 5-Bay NAS's 8GB of included memory gives it a capable foundation for shared storage and business backups.

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#3

Synology DiskStation DS923+ 4-Bay NAS

The Synology DiskStation DS923+ 4-Bay NAS is the best four-bay alternative for users who value ECC memory and an optional 10GbE upgrade. The AMD Ryzen R1600 processor and 4GB of ECC memory give the compact NAS a business-focused foundation.

Best for: Four-bay users who want upgrade options

Drive bays

4

Processor

AMD Ryzen R1600, 2 cores

Memory

4GB ECC DDR4, expandable to 32GB

Network

2 x 1GbE; optional 10GbE

Pros

• ECC memory and expansion options suit business use.
• Optional 10GbE provides a higher-speed network path.
• Four bays balance capacity with a compact enclosure.

Cons

• The two-core processor is not aimed at demanding compute workloads.

Is the Synology DiskStation DS923+ 4-Bay NAS worth buying on Black Friday 2026?

Yes. The Synology DiskStation DS923+ 4-Bay NAS suits users who want four bays with ECC memory and a path to optional 10GbE. Choose it over the DS423+ when business-oriented memory and network upgrades matter more than the DS423+ platform.

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#4

Synology DiskStation DS224+ 2-Bay NAS

The Synology DiskStation DS224+ 2-Bay NAS is the best simple NAS for households that need mirrored storage and a compact footprint. The Synology DiskStation DS224+ 2-Bay NAS's Intel Celeron J4125 processor and two drive bays cover everyday backups and shared files.

Best for: First-time NAS buyers and small households

Drive bays

2

Processor

Intel Celeron J4125, 4 cores

Memory

2GB DDR4, expandable to 6GB

Network

2 x 1GbE

Pros

• Compact two-bay design fits a basic home setup.
• Four-core processor supports everyday NAS functions.
• DSM includes file-sharing and backup tools.

Cons

• Two bays offer less capacity and redundancy flexibility than four-bay models.

Is the Synology DiskStation DS224+ 2-Bay NAS worth buying on Black Friday 2026?

Yes. The Synology DiskStation DS224+ 2-Bay NAS is a sensible entry point for home backups and shared storage. The Synology DiskStation DS224+ 2-Bay NAS's two drive bays keep setup simple, but households planning a large media library or more expansion should compare it with a four-bay Synology NAS.

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#5

Synology DiskStation DS723+ 2-Bay NAS

The Synology DiskStation DS723+ 2-Bay NAS is the best compact option for users who want ECC memory and a network upgrade path in a two-bay system. The Synology DiskStation DS723+ 2-Bay NAS's AMD Ryzen R1600 processor and optional 10GbE adapter make it distinct from entry-level models.

Best for: Compact business storage and advanced home users

Drive bays

2

Processor

AMD Ryzen R1600, 2 cores

Memory

2GB ECC DDR4, expandable to 32GB

Network

2 x 1GbE; optional 10GbE

Pros

• ECC memory is unusual in a compact two-bay NAS.
• Memory expansion supports more demanding use.
• Optional 10GbE offers an upgrade path.

Cons

• Two drive bays limit capacity compared with the DS423+ and DS1522+.

Is the Synology DiskStation DS723+ 2-Bay NAS worth buying on Black Friday 2026?

Yes. The Synology DiskStation DS723+ 2-Bay NAS is a capable compact server for users who value ECC memory and optional 10GbE. Choose it for a smaller footprint and an upgrade path, rather than for maximum drive capacity.

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#6

Synology DiskStation DS1621+ 6-Bay NAS

The Synology DiskStation DS1621+ 6-Bay NAS is the best step-up choice for users who need more internal capacity than a five-bay system. The Synology DiskStation DS1621+ 6-Bay NAS's six drive bays and four-core AMD Ryzen V1500B processor suit growing shared storage and backup workloads.

Best for: Growing offices and large storage pools

Drive bays

6

Processor

AMD Ryzen V1500B, 4 cores

Memory

4GB ECC DDR4

Network

4 x 1GbE; PCIe expansion

Pros

• Six bays offer room for larger storage pools.
• Four-core processor supports multiple NAS workloads.
• PCIe slot supports network expansion.

Cons

• Larger capacity and feature set call for more setup planning.

Is the Synology DiskStation DS1621+ 6-Bay NAS worth buying on Black Friday 2026?

Yes. The Synology DiskStation DS1621+ 6-Bay NAS is a strong fit for a growing office that needs six drive bays and a four-core processor. The Synology DiskStation DS1621+ 6-Bay NAS's larger enclosure makes less sense for a basic household backup system with modest storage needs.

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#7

Synology DiskStation DS1821+ 8-Bay NAS

The Synology DiskStation DS1821+ 8-Bay NAS is the best high-capacity pick for teams managing large shared files and backup sets. The Synology DiskStation DS1821+ 8-Bay NAS's eight drive bays and four-core AMD Ryzen V1500B processor provide substantial room for an expanding storage pool.

Best for: Large libraries and demanding small offices

Drive bays

8

Processor

AMD Ryzen V1500B, 4 cores

Memory

4GB ECC DDR4

Network

4 x 1GbE; PCIe expansion

Pros

• Eight bays support a high-capacity storage pool.
• Four-core processor supports concurrent server tasks.
• PCIe expansion adds network flexibility.

Cons

• The eight-bay enclosure is excessive for basic home backups.

Is the Synology DiskStation DS1821+ 8-Bay NAS worth buying on Black Friday 2026?

Yes. The Synology DiskStation DS1821+ 8-Bay NAS is worth a look for users who need substantial shared storage and room to expand. Eight bays are the key advantage, while a smaller two-, four-, or five-bay model is a better match for lighter use.

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Which is better, Synology DS423+ or Synology DS1522+?

Synology DiskStation DS423+ 4-Bay NAS suits many homes, while Synology DiskStation DS1522+ 5-Bay NAS offers more room to expand. The DS1522+ adds a fifth bay, 8GB of ECC memory, four 1GbE ports, and support for an optional 10GbE adapter.

The DS423+ has an Intel Celeron J4125 processor, 2GB of memory, two 1GbE ports, and two M.2 slots for SSD caching. Choose it for a home archive, backup target, or media library; choose the DS1522+ for a small office or growing storage needs.

Which Synology NAS is better for home backups and media?

Synology DiskStation DS423+ 4-Bay NAS offers four bays for a home backup system or media library. Synology DSM provides tools for file sharing, device backups, and media organization; setup also requires compatible drives and a network connection.

The Intel Celeron J4125 processor has integrated graphics, but playback and transcoding depend on file formats, client devices, and software settings. For a simple mirrored backup with fewer storage needs, consider Synology DiskStation DS224+ 2-Bay NAS instead.

How much storage expansion does the DS1522+ offer?

Synology DiskStation DS1522+ 5-Bay NAS has five internal drive bays and two eSATA ports for compatible expansion units. Its extra bay over Synology DiskStation DS423+ 4-Bay NAS can delay the need for external expansion.

RAID and Synology Hybrid RAID reserve some capacity for redundancy, so usable space depends on drive sizes and configuration. Redundancy is not a backup; keep a separate copy of important files. The DS1522+ includes 8GB of ECC memory, supports up to 32GB, and accepts an optional 10GbE adapter.

What should buyers know about Synology NAS networking?

Synology DiskStation DS1522+ 5-Bay NAS has four 1GbE ports and supports an optional 10GbE adapter. Synology DiskStation DS423+ 4-Bay NAS has two 1GbE ports. More ports and faster networking matter most for shared work or large file transfers.

Transfer speeds also depend on the switch, cabling, client devices, storage, and workload. Synology DiskStation DS923+ 4-Bay NAS and Synology DiskStation DS723+ 2-Bay NAS support optional 10GbE adapters; Synology DiskStation DS1621+ 6-Bay NAS and Synology DiskStation DS1821+ 8-Bay NAS provide PCIe expansion.

Which Synology NAS should you choose for Black Friday 2026?

Choose Synology DiskStation DS423+ 4-Bay NAS for a home system or Synology DiskStation DS1522+ 5-Bay NAS for a small office that needs ECC memory and expansion. Synology DiskStation DS224+ 2-Bay NAS is a compact backup option; Synology DiskStation DS723+ 2-Bay NAS adds ECC memory and optional 10GbE support.

For more bays, compare Synology DiskStation DS923+ 4-Bay NAS, Synology DiskStation DS1621+ 6-Bay NAS, and Synology DiskStation DS1821+ 8-Bay NAS. Check drive compatibility, warranty coverage, and model configuration. Set a capacity target, account for redundancy, and plan a separate backup.

Buying Guide

Count drive bays before choosing a NAS

Synology DiskStation DS423+ 4-Bay NAS has four bays; Synology DiskStation DS1522+ 5-Bay NAS has five. Estimate usable capacity after redundancy, rather than adding drive capacities together.

Pick a processor for your workload

Synology DiskStation DS423+ 4-Bay NAS uses an Intel Celeron J4125 processor; Synology DiskStation DS1522+ 5-Bay NAS uses an AMD Ryzen R1600. Check that the model suits your backup, file-sharing, and media software.

Compare memory and upgrade options

Synology DiskStation DS1522+ 5-Bay NAS includes 8GB of ECC memory and supports up to 32GB. Synology DiskStation DS423+ 4-Bay NAS has 2GB and supports up to 6GB. Check compatibility and workload requirements before upgrading.

Match Ethernet to your network

Synology DiskStation DS1522+ 5-Bay NAS has four 1GbE ports and optional 10GbE support; Synology DiskStation DS423+ 4-Bay NAS has two 1GbE ports. Faster networking requires compatible switches, cabling, and client devices.

Plan for backups and compatible drives

Both NAS systems require separate drives, and redundancy does not replace a backup. Confirm drive compatibility, estimate usable capacity, and keep another copy of important files on a separate device or backup service.

FAQ

Is the Synology DS423+ better than the Synology DS1522+?

Synology DiskStation DS423+ 4-Bay NAS is better for many home users who need four bays and a simpler setup. Synology DiskStation DS1522+ 5-Bay NAS is better for expansion, with 8GB of ECC memory, a fifth bay, and optional 10GbE networking.

How many drives does the Synology DS423+ support?

Synology DiskStation DS423+ 4-Bay NAS supports four internal drives. The four bays let owners build a storage pool with a chosen redundancy configuration. Two M.2 slots are also available for SSD cache configurations, but those slots do not count as extra standard drive bays.

Does the Synology DS1522+ support 10GbE?

Synology DiskStation DS1522+ 5-Bay NAS supports optional 10GbE through a compatible adapter. The NAS includes four 1GbE ports as standard, so 10GbE requires the adapter and a compatible network switch, cabling, and client device to deliver a faster connection.

Is a two-bay or four-bay Synology NAS better for home use?

Synology DiskStation DS224+ 2-Bay NAS suits simpler home backups, while Synology DiskStation DS423+ 4-Bay NAS adds room for more drives and storage configurations. Choose based on capacity plans, redundancy needs, and how much room the household expects its file library to require.

Do Synology DS423+ and DS1522+ include hard drives?

Synology DiskStation DS423+ 4-Bay NAS and Synology DiskStation DS1522+ 5-Bay NAS are sold as NAS enclosures, and buyers should check the specific listing for included drives. Plan to purchase compatible drives separately when the selected package does not include them.