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GENERAL NAS FEATURE COMPARISON

NAS Plex (local 4K) Plex HD (remote) Plex 4K (remote) BACKUP (MS/GOOGLE OFFICE) BACKUP (BAREBONE) PHOTOS (OBJECT AI) VIDEO EDITING (4K) VIDEO EDITING (8K) DOCKER VIRTUAL MACHINES PC MODE (QVM) 2.5GbE 10GbE 25GbE Thunderbolt NVMe Pcie Expansion HDMI Drive Mixing
RS4021xs+ ✓ ✓ ✓✓✓✓✓✓✓✓✓ⓘ✓✓
RS3621xs+ ✓ ✓ ✓✓✓✓✓✓✓✓✓ⓘ✓✓
SA3400 ✓ ✓ ✓✓✓✓✓✓✓✓✓ⓘ✓✓✓

LATEST PRICE LIST

RS4021xs+4699 GBP5399.99 USD
RS3621xs+4298.65 GBP4643.14 USD
SA34005519.99 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


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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+4699 GBP5399.99 USD
RS3621xs+4298.65 GBP4643.14 USD
SA34005519.99 GBP
DEAL WATCH - Is It On Offer Right Now?

Synology 16 bay RackStation RS4021xs+ (Diskless) Amazon usa USA 333.91 OFF (WAS 5734) [LINK]
Synology 12-Bay Active-Passive Dual Controller NAS SA3400D (Diskless) Amazon usa USA 1315.54 OFF (WAS 12013) [LINK]
SYNOLOGY RS3621XS+ 2U 12BAY 2.1 GHZ 8C 8GB DDR4 4X 1GBE 2X 10GBE RPS Amazon UK UK 15.47 OFF (WAS 4314) [LINK]
Synology RackStation RS4021XS+ serveur de stockage Rack (3 U) Ethernet/LAN Noir Amazon UK UK 355.73 OFF (WAS 5395) [LINK]

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