Synology DS423+

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Status: Legacy / discontinued

A 4-bay desktop NAS for home offices and small businesses, with a quad-core Celeron J4125 whose built-in graphics handle video transcoding for Plex. Two NVMe slots can act as cache or a fast SSD volume, and RAM goes from 2 GB to 6 GB. There's no expansion port or PCIe slot.

Series	x23 Series
Bays	4
CPU	Intel Celeron J4125
Cores / Threads	4 / 4
RAM	2 GB
CPU architecture	x86_64
Support tier	full
Warranty (years)	3
Release year	2023
RAID levels	Basic, JBOD, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, SHR
RAM (max)	6 GB
Memory slots	1
Memory generation	DDR4
ECC memory	Non-ECC
Memory module type	SODIMM
Replaceable memory	Replaceable
Network ports	2x 1GbE
USB ports	2x USB 3.2 Gen 1
PCIe expansion	None
M.2 slots	2
Max raw capacity	72
Drive bay types	3.5" SATA HDD, 2.5" SATA SSD
Hot-swappable bays	Yes
CPU frequency (GHz)	2
Power draw, active (W)	28.3
Power draw, hibernation (W)	8.45
Dimensions H x W x D	6.5 x 7.8 x 8.8 in (166 x 199 x 223 mm)
Weight	4.8 lb (2.18 kg)
Estimated cost to fill every bay with a certified 8 TB drive	about $1,200 new (Western Digital WD80EFPX) / about $800 used (Synology HAT5310-8T) -- one observed eBay unit price incl. shipping x bays; quantity availability unverified
Estimated cost to fill every bay with a certified 16 TB drive	about $2,360 new (Seagate ST16000VE000) / about $2,796 refurbished (Seagate ST16000VN001) / about $1,540 used (Seagate ST16000VE000) -- one observed eBay unit price incl. shipping x bays; quantity availability unverified

View on Amazon Search eBay (new from $5749.00) + Compare

3 eBay listings checked Nov 6, 2026 · 2 new, 1 used (too few used listings to show a reliable used price)

Documents

• Datasheet (PDF)
• Product Specifications (PDF)

Compatible Drives

119 drives certified on DS423+'s official manufacturer compatibility list, sourced directly from Synology's own published Hardware Compatibility List. Each model links to that drive's own compatibility page.

Certified list last checked 2026-08-18.

Compatible Memory

1 memory module listed by Synology as compatible with DS423+. Third-party modules may also work, but are not shown here unless Synology itself lists them as compatible.

Certified list last checked 2026-09-16. Coverage varies by model. Rated module speed is not a guarantee of NAS operating speed; follow the NAS maximum capacity and installation rules.

Looking for cameras compatible with Synology NAS units? See the full Synology camera compatibility database.