Hardware Specs |
|
Ordering P/N |
TS-251A-4G |
Processor |
14nm Intel Celeron N3060 dual-core 1.6GHz (up to
2.48GHz) |
Hardware Encryption
Accleration |
AES-NI |
System Memory |
4GB DDR3L (2 x 2GB) |
Maximum Memory |
8GB |
Memory Slot |
2 x SODIMM DDR3L (For dual-DIMM configurations, you
must use a pair of identical DDR3L modules.) |
Flash Memory |
4GB, pre-loaded with QTS
system |
Drive Type |
2 x 3.5"/2.5" SATA 6Gb/s
HDDs/SSDs |
GbE LAN |
2 x Gigabit RJ45 LAN
port |
USB Port |
3 x USB 3.0 ports (Front: 1,
Rear:2) |
SD Card Reader |
|
USB QuickAccess |
(USB 3.0 Micro-B); USB cable is not
included |
HDMI |
1, max. resolution 3840 x 2160 @
30Hz |
Audio Input |
3.5mm Microphone Input jack (for dynamic
microphone) |
Audio Output |
3.5mm Line Out jack (for ampliers or
speakers) |
LED Indicator |
Status/Power, USB, HDD 1, HDD
2 |
Button |
Power/Status, USB one-touch-backup,
reset |
IR Receiver |
, supports QNAP RM-IR002 and MCE-compliant remote
controls |
Others |
Kensington security slotsystem maintenance
port |
Dimension |
169 x 102 x 219 mm |
|
6.65 x 4.02 x 8.62 inch
(HxWxD) |
Weight |
Net: 1.28 kg (2.82 lbs) |
|
Gross: 2.64 kg (5.82
lbs) |
Operating Temperature |
0-40C |
Relative Humidity |
5~95% RH non-condensing, wet bulb:
27C |
Noise Level |
18.3 dB (A) |
|
Refer to ISO 7779 ; Maximum HDD loaded ; Bystander
Position ; Average data from 1 meter in front of operating
NAS |
Power Consumption |
System sleep: 0.72W |
|
HDD standby7.9W |
|
In operation16.2W |
|
(with 2 x 2TB HDDs) |
Power |
65W AC power adapter, 100-240V
AC |
Fan |
1 x 7cm system fan (12V
DC) |
|
|
Software |
|
Operating System |
Network & Virtual
Switch |
QTS 4.2 (embedded Linux) |
1. DHCP client, DHCP
server |
|
2. USB Wi-Fi Adapter
Support |
|
3. Virtual Switch |
Supported Client OS |
Access Right
Management |
1. Windows 7, Windows 8, Windows 10, Windows Server
2003/2008 R2/2012/2012R2 |
1. Batch users creation, import/export
users |
2. Apple Mac OS X, Linux &
UNIX |
2. User quota
management |
|
3. Local user access control for CIFS, AFP, FTP,
and WebDAV |
|
4. Application access control for Photo Station,
Music Station, Video Station, and File Station |
|
5. Subfolder permissions support for CIFS/SMB, AFP,
FTP, and File Station |
Supported Browsers |
Domain Authentication
Integration |
1. Microsoft Internet Explorer 10+ , Google Chrome,
Apple Safari 7+, Mozilla Firefox |
1. Microsoft Active Directory (AD) & Domain
Controller support |
|
2. LDAP server, LDAP
client |
|
3. Domain users login via CIFS/SMB, AFP, FTP, and
File Station |
Multilingual Support |
myQNAPcloud Service |
1. Chinese (Traditional & Simplified), Czech,
Danish, Dutch, English, Finnish, French, German, Greek, Hungarian,
Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil),
Romanian, Russian, Spanish, Swedish, Thai,
Turkish |
1. Private cloud storage and
sharing |
|
2. Free host name registration
(DDNS) |
|
3. Optional myQNAPcloud SSL certificates
(DDNS) |
|
4. Auto router configuration (via
UPnP) |
|
5. Web-based file manager with HTTPS 2048-bit
encryption |
|
6. CloudLink for remote access without any
complicated router setup |
|
7. myQNAPcloud connect for easy VPN connection
(Windows VPN utility) |
File System |
Qsync |
1. Internal Hard Drive:
EXT4 |
1. Sync files across multiple devices with SSL
secure connection |
2. External Hard Drive: EXT3, EXT4, NTFS, FAT32,
HFS+ |
2. Selective synchronization for only syncing
specific folders |
|
3. Use team folders as a file center for greater
team collaboration (maximum sync tasks:32) |
|
4. Shares files by links via
e-mail |
|
5. Policy settings for conflicting files and file
type filter support |
|
6. Version control: up to 64
versions. |
|
7. Supports central configuration
mode |
|
8. Supports remote
erase/restore |
|
9. Supports Windows & Mac
OS |
Networking |
Web Administration |
1. TCP/IP (IPv4 & IPv6: Dual
Stack)1 |
1. Multi-window, multi-tasking based system
management |
2. Dual Gigabit NICs with jumbo frame (failover,
multi-IP settings, port trunking/NIC teaming) |
2. Dynamic DNS (DDNS) |
3. Service binding based on network
interfaces |
3. SNMP (v2 & v3) |
4. Squid Proxy server & Proxy
client |
4. Resource monitor |
5. Protocols: CIFS/SMB, AFP (v3.3), NFS(v3), FTP,
FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, and
SMSC |
|
6. UPnP & Bonjour
Discovery |
|
Security |
Network recycle bin for file deletion via CIFS/SMB,
AFP, and File Station |
1. Network access protection with auto-blocking:
SSH, Telnet, HTTP(S), FTP, CIFS/SMB, AFP |
1. Comprehensive logs (events &
connection) |
2. CIFS host access control for shared
folders |
2. Syslog client/server |
3. FIPS 140-2 validated AES 256-bit volume-based
and shared folder data
encryption 2 |
3. Mobile app: Qmanager for remote system
monitoring & management |
4. AES 256-bit external drive
encryption2 |
|
5. Importable SSL
certificates |
|
6. Instant alerts via email, SMS, beep, and push
service |
|
7. 2-step verification |
|
Storage Management |
File Server |
1. Storage Space Utilization
monitoring |
1. File sharing across Windows, Mac, and Linux/
UNIX |
2. QNAP flexible Volume/LUN with thin provisioning
and space reclaim3 |
2. Windows ACL |
3. Disk volume types |
3. Advanced folder permissions for CIFS/SMB, AFP,
FTP |
RAID 0,1, JBOD, single |
4. Shared folder aggregation
(CIFS/SMB) |
4. Supports storage pools |
|
5. Supports volume/LUN snapshots, up to 256 per
system (4GB System RAM required)3 |
|
6. Online volume expansion |
|
7. Online storage pool
expansion |
|
8. Online RAID capacity expansion and online RAID
level migration |
|
9. SMART data migration |
|
10. Storage expansion via a QNAP UX-500P/UX- 800P
expansion unit |
|
11. JBOD enclosure roaming |
|
12. SSD read-only/read-write
cache |
|
Power Management |
|
1. Wake on LAN |
|
2. Internal hard drive standby
mode |
|
3. Scheduled power on/off |
|
4. Automatic power on after power
recovery |
|
5. USB and network UPS support with SNMP
management |
|
6. System sleep mode (S3) |
|
Powerful All-in-one
server |
|
FTP Server |
HD (HybridDesk)
Station |
1. FTP over SSL/TLS
(Explicit) |
1. Watch various online
contents |
2. FXP support |
2. Web browsers (Chrome,
Firefox) |
|
3. Supports international keyboards, input and
mouse |
|
4. Supports user login
permissions |
|
5. A variety of applications are available
including Skype, Plex Home Theater, and more |
|
6. Up to 7.1 channel audio passthrough is
supported |
|
Note: The playback and quality of some video files
may be affected by the system's CPU and GPU decoding
abilities. |
File Station |
Linux Station |
1. Supports mounting cloud drives (such as Google
Drive, Dropbox, Microsoft OneDrive, Amazon Drive, Yandex Disk and
Box). |
1. Use your NAS as a Ubuntu PC using the NAS HDMI
output. |
2. Supports mounting remote shared folders through
FTP, WebDAV or Microsoft networking (SMB/CIFS) |
2. Download and use a variety of applications from
the Ubuntu Software Center. |
3. Supports opening documents via Office Online,
Google Docs or Chrome Extension (Edit Office files in Google Docs, Sheets,
and Slides) |
3. Supports remote desktop to monitor and access
Ubuntu remotely. |
4. Supports ISO Mounting (Up to 256 ISO
Files) |
4. An open source software platform for
developers. |
5. Drag-n-drop Files via Chrome and Firefox
Browsers |
Note: The NAS requires at least 4GB RAM and
Container Station must be installed. |
6. Photo, music, and video preview and playback
with hardware-accelerated transcoding |
|
7. File Compression (ZIP or
7z) |
|
8. Supports displaying subtitles (*.SRT, UTF-8
format) |
|
- Video seeking support for video playback during
on-the-fly transcoding |
|
- Supports slideshow playback in media
viewer |
|
9. Mobile App: Qfile for file browsing and
Management |
|
Transcode Management |
Virtualization
Station |
1. Transcode video files to 240p, 360p, 480p, 720p
and 1080p resolution |
1. Supports Virtual Machine (VM) creation to run
operating systems such as Windows, Linux, Unix and
Android |
2. Automatic video transcoding for watched
folders |
2. Supports VM import and export, cloning &
snapshot, backup and restore |
3. Hardware accelerated transcoding
support |
3. VM console can be displayed via HDMI output -
QVM |
4. Embed subtitles into videos for background
Transcoding |
4. HTML5-based shared remote
console |
|
5. Supports three different networking modes:
Isolated, External-only and Bridged |
Backup Station |
Container Station |
1. Remote replication server (over
rsync) |
1. Supports LXC and
Docker |
2. Real-time remote replication (RTRR) to another
QNAP NAS, FTP or CIFS/SMB server |
2. Download applications from the built-in Docker
Hub Registry |
3. Works as both RTRR server & client with
bandwidth control |
3. Supports one-click installation, container
export/import & console mode |
4. Real-time & scheduled
backup |
4. Supports two network modes (NAT and
host) |
5. Backup versioning for
RTRR |
5. Supports auto-start
containers |
6. Snapshot support for
RTRR/Rsync |
6. Supports downloading Docker
certificates |
7. Encryption, compression, file filter, and
transfer rate limitation |
7. Supports adding private
registries |
8. Desktop backup with QNAP NetBak Replicator for
Windows |
|
9. Apple Time Machine backup
support |
|
10. Data backup to multiple external storage
devices |
|
11. Third party backup software support: Veeam
backup & replication, Acronis True Image, Arcserve backup, emc
retrospect, Symantec Backup Exec, etc. |
|
Cloud Drive Sync |
Qsirch |
1. Multiple cloud account management like Google
Drive, Dropbox, OneDrive, and hubiC |
1. Supports full-text search in
real-time |
2. Supports multiple cloud
accounts |
2. Bar chart to show data
distribution |
3. Concurrent job execution and multi-threaded data
transfer |
3. Supports previews for photos, music, videos,
Gmail, PDF .etc |
4. Per-account bandwidth
throttling |
4. Show search results using thumbnails or a
list |
|
5. Supports search Chrome
extension |
Cloud Backup Station |
iSCSI (IP SAN) |
1. Amazon S3 Plus (including Amazon S3),
Glacier |
1. iSCSI target with multi-LUNs per target (Up to
256 targets/LUNs combined) |
2. Google Cloud Storage |
2. Supports LUN mapping &
masking |
3. WebDAV-based cloud
storage |
3. Online LUN capacity
expansion |
4. Microsoft Azure |
4. Support for SPC-3 persistent
reservation |
5. OpenStack Swift |
5. Supports MPIO &
MC/S |
|
6. iSCSI LUN backup, one-time snapshot, and
restoration |
|
7. iSCSI connection and management by QNAP Windows
Qfinder |
|
8. Virtual disk drive (via iSCSI
initiator) |
|
9. Stack chaining
master |
|
10. Max No. of virtual disk drives:
8 |
Print Server |
Surveillance
Station |
1. Max number of printers:
3 |
1. Supports over 3,000 IP
cameras |
2. Supports Internet Printing
Protocol |
2. Includes 2 free camera licenses, up to 32 camera
channels by purchasing additional licenses |
3. Print job display and
management |
3. Instant playback to check recent
events |
4. IP-based and domain name-based privilege
Control |
4. Visual aid by e-map |
|
5. Playback and speed control using the shuttle
bar |
|
6. Video preview on playback
timeline |
|
7. Intelligent video analytics (IVA) for advanced
video searching |
|
8. Surveillance client for
Mac |
|
9. Mobile surveillance app: Vmobile (iOS and
Android) |
|
10. Mobile recording app: Vcam (iOS and
Android) |
Photo Station |
VPN Server |
1. Show photos by thumbnails, list, timeline, or
folder view |
1. Secure remote access: PPTPL2TP/IPsec & OpenVPN VPN
services |
2. Tag photos with text, colors, and
ratings |
2. Max number of clients: 45 (15 clients for each
protocol) |
3. Slideshows with background music and different
transition effects |
|
4. Geotag photos and display them on Google
maps |
|
5. Supports uploading photos/videos to Picasa,
Flickr, Weibo, YouTube |
|
6. Supports face detection (with the Photo Station
Extension) |
|
7. Supports PDF to image conversion (with the Photo
Station Extension) |
|
8. Supports Facebook friends
login |
|
Music Station |
VPN Client |
1. Play or share music via web
browser |
1. Supported VPN protocols: PPTP and OpenVPN
services |
2. Supports changing album covers via Google search
or by uploading photos. |
2. PPTP Authentication: PAP, CHAP, MS-CHAP,
MS-CHAPv2 |
3. Internet radio (MP3) |
3. PPTP Encryption: None, AES 40/128 bit, AES 256
bit |
4. Up to 8 music alarms |
4. OpenVPN Encryption: None, AES 40/128 bit, AES
256 bit |
5. Mobile app: Qmusic for music streaming and
Management |
5. Transmission package
monitor |
|
6. OpenVPN port control & link
compression |
iTunes Server |
DLNA Server |
1. Audio and video sharing for Windows & Mac
iTunes |
1. Supports DLNA/UPnP TVs and players such as
PlayStation 4 and Xbox One |
|
2. Support CUE indexing file for APE, FLAC audio
format. |
|
3. Video and Audio On-the-fly
Transcoding |
Video Station |
OceanKTV |
1. Show photos by thumbnails, list, timeline, or
folder view |
1. Use the NAS as a karaoke
machine. |
2. Tag videos with text, color, and
ratings |
2. Display songs by artists, languages, and
favorites. |
3. Share video links to social websites or through
email |
3. Enhance the experience with effects such as
tuning echo, key, or applause |
4. Display movie information and posters from
Internet sources or user-uploaded files |
4. Control the playlist with a mobile
app. |
5. Supports displaying subtitles (*.SRT,*.ASS,
*.SSA), online searching and downloading of subtitles as well as importing
subtitle files |
5. Supports keyboard and remote control (RM-RF001/
RM-IR002) |
6. Supports Facebook friends
login |
|
7. Mobile app: Qvideo for online video browsing and
management |
|
AirPlay &
Chromecastk |
Qfinder Pro with Storage Plug &
Connect |
1. Streams videos, photos and music from NAS to
Apple TV or Chromecast via File Station, Music Station, Photo Station,
Video Station or mobile app (Qfile, Qmusic, Qphoto or
Qvideo). |
1. Creating and mapping shared folders by QNAP
Windows Qfinder Pro |
Note: The Media Streaming add-on app must be
installed from the QTS App Center. |
2. Creation of and connection to iSCSI
target/LUN |
Download Station |
|
1. PC-less BT, FTP/FTPS, and HTTP/HTTPS, Thunder,
FlashGet and qqdl download (up to 500 Tasks) |
|
2. The maximum number of concurrent downloads: 90
(30 BT/PT, 30 HTTP, 30FTP downloads) |
|
3. BT download with search, Magnet Link and PT
support |
|
4. Scheduled download and bandwidth
control |
|
5. RSS subscription and download
(broadcatching) |
|
6. Proxy support for BT
download |
|
7. Mobile app: Qget for downloads browsing and
Management |
|
|
|
Package Content |
TS-251A |
|
Ethernet cable x 2 |
|
Quick installation guide
(QIG) |
|
65W AC Adapter: |
|
PWR-ADAPTER-65W-A01 |
|
Power cord x 1 |
|
Flat head screw x 8 (for 3.5"
HDD) |
|
Flat head screw x 6 (for 2.5
HDD) |
|
IR Remote
Control: RM-IR002 |
|
8-Bay Expansion
Unit: UX-800P |
|
5-Bay Expansion
Unit: UX-500P |
|
1GB DDR3L SODIMM
RAM:RAM-1GDR3L-SO-1600 |
|
2GB DDR3L SODIMM
RAM: RAM-2GDR3L-SO-1600 |
|
4GB DDR3L SODIMM
RAM: RAM-4GDR3L-SO-1600 |
|
8GB DDR3L SODIMM
RAM: RAM-8GDR3L-SO-1600 |