PriceSpy UK
Impartial price comparison

Synology DiskStation DS218+ vs. Synology DiskStation DS220j + 8

Synology DiskStation DS218+

Synology DiskStation DS218+

£227.99

Free delivery
Synology DiskStation DS220j

Synology DiskStation DS220j

£158.99

Free delivery
Synology DiskStation DS220+

Synology DiskStation DS220+

£283.82

£287.31 Incl. delivery
Synology DiskStation DS920+

Synology DiskStation DS920+

£476.99

Free delivery
WD My Cloud Home 4TB

WD My Cloud Home 4TB

£99.99

£173.93 Incl. delivery
Synology DiskStation DS420+

Synology DiskStation DS420+

£438.99

Free delivery
Synology DS218play

Synology DS218play

£199.97

Free delivery
QNAP TS-251+-2G

QNAP TS-251+-2G

£341.61

£359.00 Incl. delivery
WD My Cloud Home 6TB

WD My Cloud Home 6TB

£139.99

£222.81 Incl. delivery
Synology DS720+

Synology DS720+

£386.49

Free delivery
Noise level
19.3 dB
18.2 dB
19.8 dB
19.8 dB
19.9 dB
15.4 dB
18.4 dB
Client services
BitTorrent
BitTorrent
BitTorrent
BitTorrent
Ethernet connection
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Number of Ethernet ports (RJ-45)
1 ​
1 ​
2 ​
2 ​
1 ​
2 ​
1 ​
2 ​
1 ​
2 ​
Number of SFP+ ports
0 ​
0 ​
0 ​
0 ​
0 ​
0 ​
0 ​
0 ​
Speed
10/100/1000 (Gigabit) Mbit/s
10/100/1000 (Gigabit) Mbit/s
10/100/1000 (Gigabit) Mbit/s
10/100/1000 (Gigabit) Mbit/s
10/100/1000 (Gigabit) Mbit/s
10/100/1000 (Gigabit) Mbit/s
10/100/1000 (Gigabit) Mbit/s
10/100/1000 (Gigabit) Mbit/s
10/100/1000 (Gigabit) Mbit/s
10/100/1000 (Gigabit) Mbit/s
Server services/protocols
FTP, NFS, AFP, CIFS/SMB, iSCSI
FTP, NFS, AFP, CIFS/SMB, iSCSI
FTP, NFS, AFP, CIFS/SMB, iSCSI
FTP, NFS, AFP, CIFS/SMB, HTTP, iSCSI, SFTP
FTP, NFS, AFP, CIFS/SMB, HTTP, iSCSI, SFTP
FTP, NFS, AFP, CIFS/SMB, HTTP, iSCSI, SFTP
FTP, NFS, AFP, CIFS/SMB, HTTP, iSCSI
FTP, NFS, AFP, CIFS/SMB, HTTP, iSCSI
Wireless network (Wi-Fi)
No
No
No
No
No
No
No
No
No
No
ActiveDirectory
Yes
Yes
Yes
No
Yes
ECC
No
No
No
Fully supported file system (external)
HFS+, NTFS, FAT32, ext4, ext3, BTRFS
HFS+, NTFS, FAT32, ext4, ext3
HFS+, NTFS, FAT32, ext4, ext3, BTRFS
HFS+, FAT32, ext4, ext3, BTRFS
HFS+, NTFS, FAT32, ext4, ext3
HFS+, NTFS, FAT32, ext4, ext3
ext4, ext3, BTRFS
Fully supported file system (internal)
ext4, BTRFS
ext4
ext4, BTRFS
ext4, BTRFS
ext4, BTRFS
ext4
ext4
NTFS, ext4, HFS+, BTRFS
x86-compatible processor
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
IDE/PATA
No
No
No
No
No
No
No
No
No
SAS
No
No
No
No
No
No
No
No
No
SATA (Serial ATA)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SATA interface
S-ATA/600
S-ATA/600
S-ATA/600
S-ATA/600
S-ATA/600
S-ATA/600
S-ATA/600
S-ATA/600
SCSI
No
No
No
No
No
No
No
No
No
Data link protocols
Gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet
Gigabit Ethernet
eSATA
Yes
No
No
Yes
No
No
No
No
No
Yes
Firewire
No
No
No
No
No
No
No
No
No
No
HDMI
No
No
No
No
No
No
No
Yes
No
No
Number of HDMI outputs
1 ​
Optical fiber
no
no
no
no
no
no
no
no
no
no
Thunderbolt
No
No
No
No
No
No
No
No
No
No
USB
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
USB (total)
3 ​
2 ​
2 ​
1 ​
2 ​
4 ​
1 ​
2 ​
USB 2.0
0 ​
0 ​
0 ​
0 ​
0 ​
2 ​
0 ​
0 ​
USB 3.1 Gen 1 (5Gbps)
3 ​
2 ​
2 ​
2 ​
1 ​
2 ​
2 ​
2 ​
1 ​
2 ​
USB 3.2 Gen 2 (10Gbps)
0 ​
0 ​
0 ​
0 ​
0 ​
0 ​
0 ​
0 ​
USB 3.2 Gen 2x2 (20Gbps)
0 ​
0 ​
0 ​
0 ​
0 ​
0 ​
0 ​
0 ​
Dimensions (WxHxD)
Depth
232.2 mm
223 mm
140 mm
223 mm
225.5 mm
225 mm
140 mm
Height
165 mm
165 mm
165 mm
166 mm
175.5 mm
199 mm
100 mm
168.5 mm
175.5 mm
166 mm
Width
108 mm
100 mm
108 mm
199 mm
53 mm
166 mm
165 mm
102 mm
53 mm
106 mm
Product weight
1.3 kg
0.88 kg
1.3 kg
2.24 kg
1.05 kg
2.18 kg
0.87 kg
1.28 kg
1.11 kg
1.51 kg
Designed for rack mounting
No
No
No
No
No
No
No
No
No
No
Features
DLNA, Supports Hot-swap
Display, Supports Hot-swap
DLNA, Supports Hot-swap
Supports Hot-swap
DLNA
DLNA, Display, Supports Hot-swap
Supports Hot-swap
Cooling
Active
Active
Active
Active
Passive
Active
Active
Active
Passive
Active
RAID
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Type of RAID
RAID 0, RAID 1, JBOD
RAID 0, RAID 1, JBOD
RAID 0, RAID 1, JBOD
RAID 0, RAID 1, RAID 5, JBOD, RAID 6
RAID 0, RAID 1, RAID 5, JBOD, RAID 6
RAID 0, RAID 1, JBOD
RAID 0, RAID 1, JBOD
RAID 0, RAID 1, JBOD
Wake on LAN
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
RAM
2048 MB
512 MB
2048 MB
4096 MB
1024 MB
2048 MB
1024 MB
2048 MB
1024 MB
2048 MB
Operational Power Consumption (min-max)
17.23 W
12.46 W
14.69 W
9.69 - 32.17 W
8.45 - 28.3 W
5.16 - 16.79 W
18.09 W
16.44 W
Power consumption (standby)
5.4 W
5.06 W
5.16 W
10.56 W
Processor core type
2 (Dual) Core
4 (Quad) Core
2 (Dual) Core
4 (Quad) Core
4 (Quad) Core
2 (Dual) Core
4 (Quad) Core
4 (Quad) Core
4 (Quad) Core
4 (Quad) Core
Processor model
Intel Celeron J3355
Realtek RTD1296
Intel Celeron J4025
Intel Celeron J4125
Intel Celeron J4025
Realtek RTD1296
Intel Celeron J1900
Intel Celeron J4125
Processor speed
2 GHz
1.4 GHz
2 GHz
2 GHz
1.4 GHz
2 GHz
1.4 GHz
2 GHz
1.4 GHz
2 GHz
Operating system
DiskStation Manager (DSM)
DiskStation Manager (DSM)
DiskStation Manager (DSM)
DiskStation Manager (DSM)
DiskStation Manager (DSM)
DiskStation Manager (DSM)
QNAP Turbo NAS System
DiskStation Manager (DSM)
Built-in hard drive
No
No
No
No
Yes
No
No
No
Yes
No
Quantity
1 ​
1 ​
Storage capacity
4 TB
6 TB
Price/TB
25 £/TB
23.33 £/TB
Form factor
3.5 inch, 2.5 inch
3.5 inch, 2.5 inch
3.5 inch, 2.5 inch
3.5 inch, 2.5 inch
3.5 inch, 2.5 inch
3.5 inch, 2.5 inch
3.5 inch, 2.5 inch
3.5 inch, 2.5 inch
3.5 inch, 2.5 inch
3.5 inch, 2.5 inch
Internal transfer rate
112 MB/s
112 MB/s
Number of hard drive slots
2 ​
2 ​
2 ​
4 ​
1 ​
4 ​
2 ​
2 ​
1 ​
2 ​