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+ |
✓ |
✓ |
✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | | | ✓ | | | ⓘ | ✓ | ✓ | | |
LATEST PRICE LIST
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 |
BEST FOR MULTIMEDIA
| NAS |
GPU |
Base_GHz/Max |
Codec |
FPS |
Transcoding |
Plex |
| RS4021xs+ |
|
/ |
|
|
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 |
*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 |
BEST FOR VIDEO EDITING
| NAS |
MAX LAN speed |
Ports |
transcoding |
PCIe |
NVMe |
| RS4021xs+ |
10Gbit |
2x RJ-45 10GbE |
|
2 x Gen3 x8 |
|
BEST FOR SURVEILLANCE (CCTV)
| NAS |
HDMI |
QVM |
transcoding |
AI |
| RS4021xs+ |
|
|
|
|
BEST FOR SMART HOME/ AI
| NAS |
Virtual switch |
Docker/VM |
HDMI |
S/PDIF / AUX |
| RS4021xs+ |
|
Docker/VM |
|
|
LATEST VIDEOS RELATED
AVAILABILITY / RELEASE DATE
| Brand |
Model |
TW |
USA |
UK |
Released |
| Synology |
RS4021xs+ |
• |
• |
• |
2021-01 |
LATEST POSTS RELATED
Synology RS3621XS+, RS4021XS+ and RS3621RPxs Specifications Revealed
Synology RS3621xs+, RS362RP1xs and RS4021xs+ NAS Coming Soon
RELATED REVIEWS
LATEST PRICE LIST
DEAL WATCH - Is It On Offer Right Now?
UK 162.97 OFF (WAS 6578) [LINK] 
USA 50.96 OFF (WAS 5575) [LINK]