compare

LATEST PRICE LIST

RS2821RP+
RS4021xs+

BEST FOR Virtualisation

NAS	CPU	Cores	Threads	Speed (GHz)	Docker/VM	Score	ECC
RS2821RP+	AMD Ryzen V1500B	4	8	2.2	Docker/VM	4584	ECC /4 GB DDR4 ECC UDIMM
RS4021xs+	Intel Xeon D-1541	8	16	2.1 (MAX:2.7)	Docker/VM	10154	ECC /16 GB DDR4 ECC UDIMM

BEST FOR MULTIMEDIA

NAS	GPU	Base_GHz/Max	Codec	FPS	Transcoding	Plex
RS2821RP+		/			0	1080p
RS4021xs+		/			0	2160p

BEST FOR FILE STORAGE

NAS	BAYS	Bandwidth	HDD storage	expansion	Drive mixing	File System
RS2821RP+	16 HDD	4Gbit (4 ports combined)	352TB	✓	✓	EXT4 BTRFS
RS4021xs+	16 HDD	24Gbit (6 ports combined)	352TB	✓		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
RS2821RP+	folder/barebone	✓	face+object	✓	✓	volume/folder
RS4021xs+	folder/barebone	✓	face+object	✓	✓	volume/folder

BEST FOR VIDEO EDITING

NAS	MAX LAN speed	Ports	transcoding	PCIe	NVMe
RS2821RP+	1Gbit			1 x Gen3 x4
RS4021xs+	10Gbit	2x RJ-45 10GbE		2 x Gen3 x8

BEST FOR SURVEILLANCE (CCTV)

NAS	HDMI	QVM	transcoding	AI
RS2821RP+
RS4021xs+

BEST FOR SMART HOME/ AI

NAS	Virtual switch	Docker/VM	HDMI	S/PDIF / AUX
RS2821RP+		Docker/VM
RS4021xs+		Docker/VM

LATEST VIDEOS RELATED

AVAILABILITY / RELEASE DATE

Brand	Model	TW	USA	UK	Released
Synology	RS2821RP+	•	•	•	2021-03
Synology	RS4021xs+	•	•	•	2021-01

LATEST POSTS RELATED

RS2821RP+ compatible RAM upgrade
Synology RS2821RP+ NAS Review - Bigger and Better?
Synology release RS2821RP+
Synology RS3621XS+, RS4021XS+ and RS3621RPxs Specifications Revealed
New Synology NAS - RS2821RP+, RS2421RP+, SA6500 & FS6600N Uncovered
Synology RS3621xs+, RS362RP1xs and RS4021xs+ NAS Coming Soon

RELATED REVIEWS

SOFTWARE - 9/10

HARDWARE - 8/10

PERFORMANCE - 8/10

PRICE - 7/10

VALUE - 8/10

8.0

PROS

👍🏻Ryzen Powered Solution
👍🏻Massive Scale Synology System at £3k
👍🏻PCIe Gen 3 x8 PCIe Equipped
👍🏻Great RAID Options (inc SHR)
👍🏻Excellent choice of Apps
👍🏻DDR4 ECC Memory up to 32GB (UDIMM, not SODIMM too)
👍🏻Numerous Backup Software Options
👍🏻Huge Virtualization Support
👍🏻3yr Warranty and Extendable to 5yrs

CONS

👎🏻1Gbe Ports seem a bit limited now
👎🏻4GB Memory by default seems a bit small
👎🏻Synology Hard Drive Exclusivity is still an Opinion Splitter!
👎🏻NVMe SSDs Ports not available, unlike desktop alternatives and requires a PCIe Upgrade Card

LATEST PRICE LIST

RS2821RP+
RS4021xs+

DEAL WATCH - Is It On Offer Right Now? Synology 16 bay RackStation RS4021xs+ (Diskless) Amazon USA 398.91 OFF (WAS 5799) [LINK] These Offers are Checked Daily