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LATEST PRICE LIST

RS4021xs+	5175.31 GBP	5399.99 USD
RS3621xs+	4050.24 GBP	4578.01 USD
SA3400	698.54 GBP

BEST FOR Virtualisation

NAS	CPU	Cores	Threads	Speed (GHz)	Docker/VM	Score	ECC
RS4021xs+	Intel Xeon D-1541	8	16	2.1 (MAX:2.7)	Docker/VM	10154	ECC /16 GB DDR4 ECC UDIMM
RS3621xs+	Intel Xeon D-1541	8	16	2.1 (MAX:2.7)	Docker/VM	10154	ECC /8 GB DDR4 ECC UDIMM
SA3400	Intel Xeon D-1541	8	16	2.1 (MAX:2.7)	Docker/VM	10154	ECC /16 GB DDR4 ECC RDIMM

BEST FOR MULTIMEDIA

NAS	GPU	Base_GHz/Max	Codec	FPS	Transcoding	Plex
RS4021xs+		/			0	2160p
RS3621xs+		/			0	2160p
SA3400		/			0	2160p

BEST FOR FILE STORAGE

NAS	BAYS	Bandwidth	HDD storage	expansion	Drive mixing	File System
RS4021xs+	16 HDD	24Gbit (6 ports combined)	352TB	✓		EXT4 BTRFS
RS3621xs+	12 HDD	24Gbit (6 ports combined)	264TB	✓		EXT4 BTRFS
SA3400	12 HDD	24Gbit (6 ports combined)	264TB	✓	✓	EXT4 BTRFS

*All NAS support multiple RAID/ volume groups, if you want to mix different size drive on non supported model.

BEST FOR BACKUP

NAS	Level	HA	AI	Google	Microsoft	encryption
RS4021xs+	folder/barebone	✓	face+object	✓	✓	volume/folder
RS3621xs+	folder/barebone	✓	face+object	✓	✓	volume/folder
SA3400	folder		face+object			/folder

BEST FOR VIDEO EDITING

NAS	MAX LAN speed	Ports	transcoding	PCIe	NVMe
RS4021xs+	10Gbit	2x RJ-45 10GbE		2 x Gen3 x8
RS3621xs+	10Gbit	2x RJ-45 10GbE		2 x Gen3 x8
SA3400	10Gbit	2x RJ-45 10GbE		2 x Gen3 x8

BEST FOR SURVEILLANCE (CCTV)

NAS	HDMI	QVM	transcoding	AI
RS4021xs+
RS3621xs+
SA3400

BEST FOR SMART HOME/ AI

NAS	Virtual switch	Docker/VM	HDMI	S/PDIF / AUX
RS4021xs+		Docker/VM
RS3621xs+		Docker/VM
SA3400		Docker/VM

LATEST VIDEOS RELATED

AVAILABILITY / RELEASE DATE

Brand	Model	TW	USA	UK	Released
Synology	RS4021xs+	•	•	•	2021-01
Synology	RS3621xs+	•	•	•	2021-01
Synology	SA3400	•	•	•	2020-06

LATEST POSTS RELATED

Best SA3400D price
Synology Unveils the SA3400D and UC3400: A High-Performance NAS with Dual Controllers
Synology RS3621xs+ NAS Hardware Review
Synology RS3621XS+, RS4021XS+ and RS3621RPxs Specifications Revealed
Synology RS3621xs+, RS362RP1xs and RS4021xs+ NAS Coming Soon
Best SA3400 price

RELATED REVIEWS

SOFTWARE - 9/10

HARDWARE - 9/10

PERFORMANCE - 9/10

PRICE - 7/10

VALUE - 8/10

8.4

PROS

👍🏻8-Core Xeon Processor
👍🏻Two 10GBe Connections as Standard
👍🏻Two PCIe Gen 3 x8 PCIe Equipped
👍🏻4 Slots that Support DDR4 ECC UDIMM Memory
👍🏻Excellent choice of Apps
👍🏻Redundant PSU as Standard
👍🏻Numerous Backup Software Options
👍🏻Huge Virtualization Support
👍🏻Storage Can be Expanded to 36 SATA Drives
👍🏻5yr Warranty

CONS

👎🏻NVMe SSDs Ports not available, unlike desktop alternatives
👎🏻Very Limited Hard Drives Supported (Largely ONLY Synology HAT5300 series)
👎🏻64GB Memory Maximum Seems Low, given other Enterprise Solutions support 128/256GB

LATEST PRICE LIST

RS4021xs+	5175.31 GBP	5399.99 USD
RS3621xs+	4050.24 GBP	4578.01 USD
SA3400	698.54 GBP

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