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Comparison of QNAP TS-251 and TerraMaster U1-NAS

The side-by-side comparison of the devices’ specifications. The comparison table below makes it easier to choose the most fitting NAS.

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Adding/changing a NAS
QNAP TS-251 (TS-251)
QNAP TS-251 (TS-251)
TerraMaster U1-NAS (U1-NAS)
TerraMaster U1-NAS (U1-NAS)
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Launch 2014 2012
Class Small office / Home office Low end
Body
Dimensions 169 x 102 x 219 mm 206 x 160 x 46 mm
Weight 1.28 kg 538 g
Disks
Disk bays 2 x 3.5" SATA III 1 x 3.5" SATA II
RAID JBOD
RAID0
RAID1
no
SSD support yes no
Network
LAN ports 2 x Gigabit Ethernet 1 x Gigabit Ethernet
Wireless yes no
Protocols AFP
CIFS/SMB
FTP
ISCSI
NFS
SFTP
WEBDAV
AFP
CIFS/SMB
FTP
WEBDAV
P2P support BitTorrent BitTorrent
Media server DLNA
UPnP
iTunes
DLNA
UPnP
iTunes
Cloud backup Amazon S3
Dropbox
ElephantDrive
Google Drive
no
Connectivity
USB ports 2 x USB 2.0
2 x USB 3.0
1 x USB 2.0 device
eSATA ports no no
System
CPU Intel Celeron J1800 dual-core @ 2.4 GHz N5 single-core @ 800 GHz
RAM 1 GB (upgradable) 256 MB
Flash 512 MB 8 MB
Operating system QNAP QTS TerraMaster TOS
Alternative OS
Power
Power supply 12 V / 5 A 12 V / 2 A
Consuption 19.22 W / 10.28 W 15 W / 3 W
Fans 1 x 70 mm fanless
Noise level 15.4 dB(A)
Features
Specials
Administration
Default IP DHCP DHCP
Default username admin admin
Default password admin admin

A maximum of 3 devices can be compared at the same time. To add or change a NAS, type the name of the NAS you’re looking for in the search field of the table’s column, then click on the device’s name in the drop-down list of search results.

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