Synology DiskStation DS224+ with the front cover off

Synology DiskStation DS224+ vs. DS423+: Which NAS is best?

Synology makes some of the best NAS available and choosing between the Synology DiskStation DS224+ vs. DS423+ could prove difficult. Both NAS share many of the same internal components but the DS423+ has two additional drive bays and two M.2 slots for expanding the storage pool or enabling caching. Here’s all you need to know.

Synology DiskStation DS224+

More affordable NAS

Synology DiskStation DS224+
Synology DiskStation DS224+. (Source: Synology)
  • Intel CPU for 4K transcoding
  • Same excellent OS
  • More affordable
  • No 2.5GbE ports
  • No M.2 slots
  • Fewer drive bays

The new Synology DiskStation DS224+ was highly anticipated due to the popularity of the DS220+ it replaces. Synology opted to renovate instead of innovate with the DS224+, upgrading the processor and keeping everything else the same. That’s not a bad thing for the most part.

Synology DiskStation DS423+

Higher capacity NAS

Synology DiskStation DS423+
Synology DiskStation DS423+. (Source: Synology)
  • Intel CPU for 4K transcoding
  • Same excellent OS
  • More drive bays
  • M.2 slots
  • No 2.5GbE ports
  • More expensive

The Synology DiskStation DS423+ is a capable four-bay NAS that takes everything that makes the DS224+ good and turns it up a notch. The company added two more bays and two M.2 slots for higher capacity support and the ability to set up data caching.

The Synology DiskStation DS224+ and DS423+ are both excellent NAS. The DS224+ is the more affordable choice for those who are new to the world of NAS. It has everything you’d need to get up and running. The Synology DiskStation DS423+ is another great choice if you have a lot of data to store. The two more drive bays and M.2 slots can come in handy for larger file storage.

DS423+ is the more powerful NAS

Side view of the Synology DiskStation DS224+
Side view of the Synology DiskStation DS224+. (Source: NM)

The two enclosures are similarly priced and reflect this in the specifications. Both of the NAS have the same Intel Celeron J4125, which is a four-core processor capable of bursting up to 2.7 GHz. Then there’s the DDR4 RAM clocking in at 2 GB with the potential of bumping the capacity up to 6 GB. This is where things begin to differ slightly in favor of the DS423+.

Because of the larger dimensions of the DS423+, Synology was able to cram more internal hardware, starting with not two but four drive bays. This allows for a raw capacity of 80 TB before considering RAID. Two M.2 slots are at hand for either expanding the storage pool beyond this 80 TB limit or boosting the performance of the DS423+ through caching.

Synology DiskStation DS224+Synology DiskStation DS423+
CPUIntel Celeron J4125
(4-core, 2.7 GHz burst)
Intel Celeron J4125
(4-core, 2.7 GHz burst)
RAM2 GB DDR4 (max 6 GB)2 GB DDR4 (max 6 GB)
Drive bays2 SSD/HDD4 SSD/HDD
2 M.2 SSD
Capacity40TB80TB
Expansion support
Cooling1x 92 mm fan2x 92 mm fan
Ports2x 1 GbE
2x USB-A 3.2 Gen 1
1x eSATA
2x 1 GbE
2x USB-A 3.2 Gen 1
Power draw~14.69 W~28.3 W
Dimensions165 x 108 x 232.2 mm166 x 199 x 223 mm
Weight1.3 kg2.18 kg
Price$300$497

Some of the best NAS available come rocking 2.5GbE networking or faster, something neither NAS here is capable of handling. Synology kept to 1GbE ports, which may appear as a strange decision when TerraMaster is able to provide additional bandwidth at a more affordable price. Synology regains ground through its operating system, DiskStation Manager.

Running Plex and transcoding 4K content is no trouble on either enclosure though you will be able to store more media on the Synology DiskStation DS423+. If the absolute best performance and capacity are desired, we’d recommend the DS423+.

Go with the DS224+ to save the most money

Front of the Synology DiskStation DS224+
Front of the Synology DiskStation DS224+. (Source: NM)

To save the most, the clear choice would be the Synology DiskStation DS224+. It’s more affordable yet doesn’t sacrifice performance, only data capacity. It’s still possible to install and run all the same apps and services. The lack of any M.2 slots would only affect those who could make use of faster storage or advanced data caching.

Synology DiskStation DS224+

Synology DiskStation DS224+
Synology DiskStation DS224+. (Source: Synology)

The Synology DiskStation DS224+ is a compelling purchase for those looking for a new NAS. It has a solid CPU, and a great OS, and makes for an excellent first enclosure.

Synology DiskStation DS423+

Synology DiskStation DS423+
Synology DiskStation DS423+. (Source: Synology)

The DS423+ shares many of the same internals as the smaller DS224+ but manages to add two additional 3.5-inch drive bays and two M.2 NVMe slots for SSDs. It’s the better buy for those with more data to store.

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