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Comparison of QNAP TS-251A and QNAP TS-231

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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QNAP TS-251A (TS-251A)
QNAP TS-251A (TS-251A)
QNAP TS-231 (TS-231)
QNAP TS-231 (TS-231)
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Launch 2016 2015
Class Small office / Home office Small office / Home office
Body
Dimensions 169 x 102 x 219 mm 169 x 102 x 219 mm
Weight 1.28 kg 1.28 kg
Disks
Disk bays 2 x 3.5" SATA III 2 x 3.5" SATA III
RAID JBOD
RAID0
RAID1
JBOD
RAID0
RAID1
SSD support yes yes
Network
LAN ports 2 x Gigabit Ethernet 2 x Gigabit Ethernet
Wireless yes, with USB dongle yes, with USB dongle
Protocols AFP
CIFS/SMB
FTP
ISCSI
NFS
SFTP
WEBDAV
AFP
CIFS/SMB
FTP
ISCSI
NFS
WEBDAV
P2P support BitTorrent BitTorrent
Media server DLNA
UPnP
iTunes
DLNA
iTunes
Cloud backup Amazon S3
Box
Dropbox
Google Drive
Microsoft OneDrive
Amazon S3
Dropbox
Google Drive
Microsoft OneDrive
Connectivity
USB ports 3 x USB 3.0 3 x USB 3.0
eSATA ports no 1 x eSATA
System
CPU Intel Celeron N3060 dual-core @ 1.6 GHz Freescale ARMv7 Cortex-A9 dual-core @ 1.2GHz
RAM 2 GB (upgradable) 512 MB
Flash 4 GB 512 MB
Operating system QNAP QTS QNAP QTS
Alternative OS    
Power
Power supply 12 V / 5.4 A 12 V / 5 A
Consuption 16.2 W / 7.9 W 20.56 W / 9.78 W
Fans 1 x 70 mm 1 x 70 mm
Noise level 18.3 dB(A) 15.4 dB(A)
Features
Specials Failover and link aggregation
HDMI output
Infrared receiver
Audio input
Audio output
 
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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