QNAP TS-451+ 4-Bay Home and SOHO NAS Server

QNAP TS-451+ 4-Bay Home and SOHO NAS Server

Brand QNAP
Model TS-451+-2G-US

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Hardware Specifications
2.0 GHz Intel Celeron Quad-Core (burst up to 2.42 GHz)Floating Point Unit: V Hardware-Accelerated Transcoding: V
2 GB of DDR3L RAM Total memory slots: 2 SO-DIMM Expandable up to 8 GB
Flash Memory
512 MB DOM
Hard Disk Drive
4 x 3.5 or 2.5" SATA 6 Gb/s, SATA 3 Gb/s hard drives or SSDs Please be aware that the system ships without any drives
Hard Disk Tray
4 x Hot-swappable tray
Expansion Unit
Max. 1 (UX-800P, UX-500P)
LAN Port
2 x Gigabit RJ-45 Ethernet port
LED Indicators
Status, LAN, USB, HDD 1-4
2 x USB 3.0 port (1x Front, 1x Rear) 2 x USB 2.0 port (2x Rear) Supports USB printers, pen drives, and USB UPS etc.
IR Receiver
Yes (QNAP RM-IR002 remote control)
Power/Status, USB One-Touch-Backup, Reset
Alarm Buzzer
System warning
Form Factor
Power Consumption
S3 Sleep: 0.57 W HDD Standby: 15.78 W In Operation (typical): 33.88 W
32 to 104°F / 0 to 40°C
5 to 95% non-condensing Wet Bulb: 81°F / 27°C
Power Supply
External Power Adapter, 90 W, 100-240 V
Secure Design
Kensington security slot for theft prevention
1 x quiet cooling fan (12 cm, 12 VDC)
6.97 x 7.09 x 9.25" / 177.04 x 180.09 x 234.95 mm
6.61 lb / 3.00 kg
Software Specifications
Operating System
QTS 4.2 (embedded Linux)
Supported Clients
Windows XP and Server 2003 onward, Apple Mac OS X onward, Linux, and UNIX
Supported Browsers
Chrome, IE 10 onward, Firefox, Safari
Multilingual Support
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
File System
Internal hard drive: EXT4 External hard drive: EXT4, EXT3, NTFS, FAT32, HFS+
TCP/IP: IPv4 & IPv6 Dual Gigabit NICs with jumbo frame (failover, multi-IP settings, port trunking/NIC teaming) Service binding based on network interfaces Proxy client, proxy server DHCP client, DHCP server Protocols: CIFS/SMB, AFP (v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, and SMSC UPnP & Bonjour discovery USB Wi-Fi adapter support
Network access protection with auto-blocking: SSH, Telnet, HTTP(S), FTP, CIFS/SMB, AFP CIFS host access control for shared folders FIPS 140-2 validated AES 256-bit volume-based data encryption AES 256-bit external drive encryption Importable SSL certificate Instant alert via E-mail, SMS, beep, and LCD panel
Storage Management
Online Volume Expansion Single Disk, JBOD, RAID 0, 1, 5, 6, 10 Online RAID Capacity Expansion Online RAID Level Migration Storage expansion via Qnap UX-500P / UX-800P expansion unit (Max: 1 unit) Bad block scan and hard drive S.M.A.R.T. Bad block recovery RAID recovery Bitmap support
Power Management
Wake on LAN Internal hard drive standby mode Scheduled power on/off Automatic power on after power recovery USB and network UPS support with SNMP management System sleep mode (S3)
Access Right Management
Batch users creation Import/export users User quota management Local user access control for CIFS, AFP, FTP, and WebDAV Application access control for Photo Station, Music Station, and Video Station
Multimedia Station
Subfolder permissions support for CIFS/SMB, AFP, FTP, and File Station
myQNAPcloud Service
Private cloud storage and sharing with myQNAPcloud id (qid) Free host name registration (DDNS) Auto router (via UPnP) configuration Web-based file manager with HTTPS 2048-bit encryption Cloudlink for remote access without complicated router setup myQNAPcloud connect for easy VPN connection (Windows VPN utility)
Syncs files among multiple devices with SSL support Selective synchronization for syncing specific folders only Share team folder as a file center for team collaboration Shares files by links via e-mail Policy settings for conflicted files and file type filter support Version control: up to 64 versions Incremental synchronization for HDD space saving Supports Windows & Mac OS
Web Administration
Multi-window, multi-tasking based system management Personalized desktop Smart toolbar and dashboard for neat display on system status Login screen with personalized photo-wall style Smart fan control Dynamic DNS (DDNS) SNMP (v2 & v3) Resource monitor Network recycle bin for file deletion via CIFS/SMB, AFP and File Station Automatic cleanup File type filter Comprehensive logs (events & connection) Syslog client/server System settings backup and restore Restore to factory default Mobile app: Qmanager for remote system monitoring & management
All-in-One Server
File Server
File Sharing across Windows, Mac, and Linux/UNIX Windows ACL Advanced folder permission for CIFS/SMB, AFP, FTP Shared folder aggregation (CIFS/SMB)
FTP Server
FTP over SSL/TLS (Explicit) FXP supported Passive ftp port range control
File Station
Supports ISO Mounting (Up to 256 ISO Files) Support thumbnail display of multimedia files Supported share download link and upload link Drag-n-drop Files via Chrome and Firefox Browsers Photo, music, and video preview and playback with hardware accelerated transcoding File Compression (ZIP or 7z)
Transcode Management
Transcode video files to 240p, 360p, 480p, 720p, and 1080p resolution Automatic video transcoding for watched folders Hardware accelerated transcoding support
Backup Station
Remote replication server (over rsync) Real-time remote replication (RTRR) to another Qnap NAS or FTP server Works as both RTRR server & client with bandwidth control Real-time & scheduled backup Encryption, compression, file filter, and transfer rate limitation Encrypted replication between Qnap NAS servers Desktop backup with Qnap NetBak Replicator for Windows Apple Time Machine backup support Data backup to multiple external storage devices Synchronizes with cloud storage: Amazon S3, ElephantDrive, Symform, Dropbox, and Google Drive Third party backup software support: Veeam backup & replication, Acronis True Image, Arcserve backup, emc retrospect, Symantec Backup Exec, etc.
Cloud Backup Station
Amazon S3 Amazon Glacier Webdev-based cloud storage Microsoft Azure Open Stack
Print Server
Max number of printers: 3 Print job display and management IP-based and domain name-based privilege control
Photo Station
Show photos in thumbnails, list, timeline, or folder view Supports virtual/smart album Validity control for sharing albums Tags photos with text, color, and rating Slideshows with background music and different transition effects Animated thumbnails for videos Geotags photos and display them on Google maps Shares slideshows link to social websites or through email Supports Facebook friends login Supports modification on photo taken date
Music Station
Plays or shares music collections with web browser Automatic classification via Media Library Internet radio streaming (MP3) Up to 8 music alarms Mobile app: Qmusic for music playing and management
iTunes Server
Audio and Video Sharing for Windows & Mac iTunes
Video Station
Show photos in thumbnails, list, timeline, or folder view Supports virtual/smart collection Validity control for sharing collections Tags videos with text, color, and rating Animated thumbnails for videos Shares video collection link to social websites or through email Sorting videos automatically into defined classifications Display movie information from IMDB
DLNA Server
Supports DLNA/UPnP TVs and players such as PlayStation 3 and Xbox 360 Video and audio on-the-fly transcoding
Streams videos, photos and music from NAS to Apple TV via Qfile or QAirPlay's web-based controller
Digital TV Station
DVB-T Digital TV Live View, Recording, and Playback Supports up to 2 USB TV Tuners Electronic Programming Guide (EPG) with Scheduled Recording Please be aware that the availability of DVB-T broadcasting and EPG may vary depending on geographic locations
Download Station
PC-less BT, FTP/FTPS, and HTTP/HTTPS download (up to 500 Tasks) BT download with Magnet Link and PT support Scheduled download and bandwidth control RSS subscription and download (broadcatching) Bulk download with wildcard settings BT search Proxy support for BT download PC utility: Qget for downloads browsing and management Mobile app: Qget for downloads browsing and management
HD Station
Playbacks videos, music, and photos on a display with XMBC via HDMI output Watch various online contents such as YouTube, Flickr, Picasa, Shoutcast, etc Web browser Supports USB U.S. keyboard and mouse Supports Qnap Qremote app and the official XBMC remote app Please be aware that the playback and quality of some video files may be affected due to the current CPU and GPU's decoding capability. Up to 7.1 channel audio passthrough can be supported
Surveillance Station
Supports over 2,100 IP cameras Includes 2 free camera licenses, up to 24 camera channels via additional license purchase Instant playback to check the recent event Online editing to edit cameras when live view Visual aid by e-map Playback and speed control by shuttle bar Video preview on playback timeline Intelligent video analytics (iva) for advanced video search Surveillance client for Mac Mobile surveillance app: vmobile (iOS and Android) Mobile recording app: vcam (iOS and Android)
Notes Station
Take notes of everything on your private cloud Collaborate notes with multiple users Support graphical editor for note editing Integrate with NAS file system: insert attachment or image from NAS file system Support event calendar and to-do list Support image editor: a easy way to highlight the focus in your image Support note publishing with a single link Support key word search Provide Chrome Extension: Notes Station Clipper Clip web page content to your note
VPN Server
Secure remote access: PPTP & OpenVPN VPN services Max number of clients: 30
Domain Authentication Integration
Microsoft Active Directory (AD) LDAP server, LDAP client Domain users login via CIFS/SMB, AFP, FTP, and File Station
App Center
More than 100 official and community software add-ons (ex: Dropbox, Google Drive Sync, McAfee, WordPress, HappyGet II, etc)
Support one Virtual Machine (VM) creating to run an operating system such as Windows, Linux, or Unix VM import from Virtual Appliances VM export into a virtual appliance in OVF / QVM format VM clone VM snapshot HTML5 based shared remote console
Signage Station
Supports dynamic content includes video, image, music, and text message Supports multi users collaboration Supports searching keywords Supports email and social network sharing Supports design software - iArtist Lite Supports account authority management Supports various browser playback (Chrome, Firefox, IE, Safari) Supports most viewed, latest released and different categories content list
Mobile App
Qfile: iOS, Android Phone, Windows phone Qfile HD: iPad Qmanager: iOS, Android Phone Qmusic: iOS, Android Phone Qremote: iOS, Android Phone Qget: Android Phone Vmobile: iOS, iPad, Android
Packaging Info
Package Weight
8.05 lb
Box Dimensions (LxWxH)
12.6 x 12.0 x 9.9"
Product Highlights
4 x 3.5" or 2.5" SATA III Drive Bays
2.0 GHz Intel Celeron Quad-Core
Up to 225 MB/s Read, 224 MB/s Write
2 x USB 3.0 Ports & 2 x USB 2.0 Ports
2 x Gigabit Ethernet Ports
RAID 0,1, 5, 5 + Hot Spare, 6, 10
AES 256-Bit Volume Encryption
Virtualization Ready
QTS 4.2 Operating System


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