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Qnap TS-421 4-Bay NAS Server

B&H # QNTS421 MFR # TS-421
In Stock
Free Expedited Shipping
You Pay: $499.00
Product Highlights
  • QTS 4.0 Operation System
  • Marvell ARM 2.0 GHz Processor
  • 1GB DDR3 RAM
  • Music/Photo/Video/DJ Station
  • Surveillance Station Pro
  • Built-In Anti-Virus Feature
  • AirPlay/QAirplay
  • USB 2.0/USB 3.0, eSATA Interface
  • myQNAPcloud
  • Energy Efficient & Eco-Friendly

The TS-421 4-Bay NAS Server from QNAP is a 4-bay home & SOHO NAS for personal cloud and social sharing. The NAS server features the QTS 4.0 operating system which makes your digital life easier, simpler and more convenient. The QTS 4.0 desktop includes quick main menu, graphic dashboard, drag-and-drop icons, multiple desktops, personalized wallpapers and the smart toolbar, making system operations much easier. The NAS server features multi-window, multi-tasking GUI, data storage, backup, sharing and disaster recovery and many more. It also consists of rich multimedia applications for entertainment and Dropbox-like file synchronization.

Simple yet Powerful Storage
The NAS server features QTS 4.0 operating system which makes your digital life easier, simpler and more convenient. The TS-421 is a powerful yet easy-to-use network storage center for data storage, backup, synchronization, remote access and home entertainment. As your personal cloud, you will always be connected to your files and your files are always under your control

  • You can organize your data/content and backups in one centralized location
  • Synchronize files across computers, tablets and mobile devices and share files across different groups and communities
  • Collect, enjoy and share your large photo, music and video collection
  • Enjoy HD movies or family videos on TV when streamed through various network players
  • Access, manage and enjoy all your files with your tablets and smartphones
  • Extend your diverse applications on the TS-421 by installing more than 80 apps on demand in the App Center
Easier Operations on QTS 4.0 Desktop
The QTS 4.0 desktop includes quick main menu, graphic dashboard, drag-and-drop icons, multiple desktops, personalized wallpapers and the smart toolbar, making system operations much easier. In addition, multi-tasking support allows multiple windows to be open to access multiple applications concurrently
Freely Access Your Cloud Anywhere
Through any web browser or the free app for tablets and smartphones, the TS-421 becomes your personal cloud so you are always connected to your data. Take advantage of the myQNAPcloud service, which allows you to remotely access your TS-421 wherever you are. Instantly stream or share your multimedia contents and share them with your friends
Photo Albums on the Cloud
The TS-421 acts as a photo vault for you to back up your favorite photos. The Photo Station makes photo sharing simple and you can designate your own access right controls. Simply upload your photos to the TS-421 to create and organize your photo albums through a web browser to share with your family and friends. Your mobile devices are useful too; with the Qfile mobile app in your iOS or Android devices, you can instantly upload photos to the TS-421

  • You can view photo slideshow with background music
  • Display photo details from EXIF: Date, exposure time, aperture and more
  • Publish photos in a few clicks to social networking sites such as Facebook, Google+, Twitter, MySpace and more
  • Share photos with your friends and family via e-mail
  • Browse photos via the Qfile app on iPhones, iPads and Android devices
Build Your Home Music Library and Enjoy Music Anywhere
The Music Station helps categorize your music collection and displays album covers to easily organize your personal playlists. Through the Music Station web player, you can enjoy your music anywhere, anytime with a few clicks. Thousands of local and global online Internet radio programs are built into Music Station for you to enjoy

  • You can listen to your favorite MP3 songs streamed from iTunes server or play music by web browsers on your PC
  • With SBS (Squeezebox Server) app plug-in, you can efficiently manage and play them with Logitech music players without even turning on your PC
  • Stream music to your UPnP Hi-Fi system and indulge in high-quality sound experience
  • Listen to your music on mobile devices through Qmusic app
Interact Through Your Favorite Social Media Sites
Many applications on the TS-421 are designed with user-friendly options, allowing you to share and connect with your social media communities. You can use Photo Station or Video Station to pick and share photos and video links directly to your Facebook. DJ Station allows you to stream and share your music playlist with your friends and family on your social media platforms
Enjoy Your Videos via AirPlay
The TS-421 supports Apple AirPlay function. You can enjoy video and multimedia contents on AirPlay-enabled devices with the QAirplay application or the Qfile mobile app. Available in the App Center, QAirplay allows you to steam your media content directly on TV via AirPlay-enabled devices such as Apple TV. The media contents are streamed on Apple TV, bypassing your mobile device, thus saving the energy of your mobile device. Alternatively, the Qfile mobile app allows you to browse videos and photos stored on the TS-421 and play on the TV via AirPlay-enabled devices such as Apple TV. It is very convenient to enjoy multimedia entertainment through the wireless experience
A Sharing Center for Your Home Theater
The TS-421 is an ideal video storage center for you to store your movie and home video collection. It features high-speed data transfer, fast enough to support multiple 1080p HD streams. The quiet operation design brings you remarkable cinema-grade home theater experience right to your living room

  • QNAP DLNA media server supports wireless streaming of all the videos, photos and music stored in the media library to any DLNA certified devices, such as PS3, Xbox360 and more. It supports thumbnails shown on the DLNA devices for identifying the content quickly
  • TwonkyMedia DLNA server is also supported to share and stream media contents in the multimedia folder of the TS-421
  • Use the TS-421 as a PLEX media server and enjoy your content through any Plex client or smart TV
  • The TS-421 can work with different media players through SMB/CIFS or other standard protocols
HappyGet is a third-party tool that allows you to download HD videos to the TS-421. By installing the HappyGet plug-in on the Chrome Web Store, you can select your preferred playlist and download an array of videos all at once with the embedded HappyGet button
24/7 Download Center
The TS-421 is a perfect download center for high-speed BT, Magnet, PT (Private Trackers), eMule, FTP and HTTP download. Your computer never needs to be on when you download your files, and managing your download can be done through any web browser. With the QGet utility, you can manage your download tasks on multiple NAS devices remotely on the local network or the Internet. The TS-421 also supports continuous NZB download and eMule download by installed App Center apps without turning on a PC. It also supports RSS download (broad catching) for automatic BT download
App Center with Rich Apps to Install on Demand
The App Center centralizes various apps developed by QNAP and third-party developers. Popular apps such as Google Drive, Plex media server, NZBGet, Python and more are available in the App Center for you to enhance your TS-421 experience. Installation is virtually immediate; with just one click, the App will start installing onto the NAS
Surveillance Station Pro - Protect Your Home and Valuables
The TS-421 uses QNAP VioStor NVR software. The TS-421 becomes a professional surveillance station to view IP cameras from your web browser and mobile devices. Supporting over 1,000 IP cameras, the Surveillance Station Pro software also includes advance features such as real-time monitoring, recording and playback. With a user-friendly interface and expandable IP camera channel licenses, Surveillance Station Pro builds a professional surveillance center for you to monitor your valuables easier
Access, Use, Sync and Enjoy with Your Tablets and Smartphones
The TS-421 is your private cloud storage that virtually enlarges the capacity of your smart mobile devices. Qfile allows you to access, upload, download, manage and share stored files easily as if you are carrying tons of files in your pocket. Music, photos and videos can be streamed, enjoyed and shared anytime, anywhere. Qmanager lets you monitor and manage the TS-421 remotely and efficiently without turning on your PC
Easy System Setup
Installation process is done completely through the cloud. Simply visit the setup portal and follow the setup guide to complete the system setup and download the utilities you want. Besides, the "Auto Setup" option provides an easy way to set up the Turbo NAS with recommended settings. All settings can be flexibly changed at a later time after the installation
Expandable Storage
The TS-421 supports large storage capacity, fulfilling the increasing demand for storage. It supports comprehensive RAID management and online RAID capacity expansion, appropriately storing important data and reducing risks of data loss
Superior Performance
Powered by the Marvell ARM 2.0 GHz processor, the TS-421 provides a large storage capacity for archiving files, videos and music. The TS-421 can handle multiple users accessing the system and multiple applications running at the same time. USB 3.0 ports for high-speed file and data backup to external hard drives are also included
More Features for Home and SOHO
The TS-421 brings you additional benefits with all-in-one home server features such as iTunes server, UPnP media server, backup server, printer server, FTP server, Web server, database server and etc
Eco-Friendly Design
The TS-421 is designed to be eco friendly and helps you save on your electricity bill. The smart fan can automatically adjust its speed based on system pre-defined criteria or a specific temperature. The hard disk standby mode sets the hard disks to enter standby mode if there is no disk access within the specified period, lowering energy consumption and extending the lifespan of the hard disks. The Turbo NAS can also be setup to automatically power on, off or reset

Centralize and Protect Your Data

Apple Time Machine Backup
The TS-421 is a high-performance cross-platform storage with many user-friendly storage and backup options to centralize and protect all your important files on one single device. The Time Machine is fully supported to help Mac OS X users create a more efficient and convenient backup solution. The TS-421 works with Time Machine wirelessly over the same network so you no longer need an external drive
More Backup Options
The Netbak Replicator is a license-free backup software which allows you to back up your files in multiple Window client PCs in schedule or real time. You can also gain a disaster recovery solution with our RTRR (Real Time Remote Replication) feature by replicating data in multiple shared folders from one NAS to another over the network to ensure the safety of your important data. Besides, data can also be backed up to another FTP server, external disk or online cloud storage services

Data Security

User Access Controls
All your digital files stored can be managed to share with your family and friends. You can easily and flexibly set up user accounts, user groups, shared folder access right and user quota
Unauthorized IP-Based Blocking
A comprehensive list granting proper access from different users based on IP address can be established to authorize or deny access to the TS-421
The TS-421 has a built-in anti-virus feature to detect and protect against viruses, malware, worms, and Trojan horses
Encrypted Login, Access and Network Transfer
Supports SSH remote login, SSL security (HTTPS), Secure FTP and encrypted remote replication
Detailed Logs
Detailed logs of file-level access to the TS-421 via different file transfer protocols and services accessed by online users can all be recorded

Synchronize and Share

Access from Anywhere
Qsync is a new feature that allows you to sync all your devices on the go. It can be synced anywhere on the web, at your home, in the office and on the go
Community Share
Qsync makes your TS-421 a team sharing device, allowing you to share and edit files among your teammates with automatic updates on the files your team is working on. Qsync provides the function of file synchronization like Dropbox service and brings forth a cost-effective way to share files across groups and communities
CPU Marvell 2.0 GHz
Flash Memory 16 MB
Hard Disk Drive 4 x 3.5" or 2.5" SATA II HDD/SSD* 1
Please Note:

*: Maximum raw capacity: 16 TB
The system is shipped without HDD

Hard Disk Tray 4 x hot-swappable
LAN Port 2 x Gigabit RJ-45 Ethernet port
LED Indicators STATUS, LAN, USB, eSATA, HDD 1, HDD 2, HDD 3, HDD 4
USB 2 x USB 2.0 port (1 at front and 1 at back )
2 x USB 3.0 port (back)
Supports USB printer, disk, pen drive, USB hub and USB UPS, etc
eSATA 2 x eSATA port (back)
Buttons System: Power button, USB one-touch-backup button, reset button
LCD Panel Mono-LCD display with backlight and buttons for configuration
Alarm Buzzer System warning
Form Factor Tower
Secure Design K-lock security slot for theft prevention
Fan 1 x 3.5" (9 cm) quiet cooling fan, 12 V DC
Operating System QTS 4.0
Supported Operating Systems Windows 8 (32/64-bit), Vista, Windows 7 (32/64-bit), Windows XP, Windows Server 2003/2008 R2/2012
Apple Mac OS X
Linux & UNIX
Supported Web Browsers Microsoft Internet Explorer 8, 9, 10
Mozilla Firefox 8+
Apple Safari 4+
Google Chrome
File System Internal Hard Drive: EXT3, EXT4
External Hard Drive: EXT3, EXT4, NTFS, FAT32, HFS+
Networking TCP/IP (IPv4 & IPv6: dual stack)
Dual Gigabit NICs with Jumbo Frame:
-Multi-IP Settings
-Port trunking/NIC teaming (Modes: Balance-RR, Active Backup, Balance XOR, Broadcast, IEEE 802.3ad/Link Aggregation, Balance-TLB and Balance-ALB)
Service binding
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
TFTP Server with PXE booting
UPnP & Bonjour Discovery
USB Wi-Fi adapter support
Backup Solution Real-Time Remote Replication (RTRR):
-Works as both RTRR server & client with bandwidth control
-Real-time & scheduled backup
-Encryption, compression, file filter and transfer rate limitation
Block-Level Remote Replication:
-Works as both Rsync Server & client with bandwidth control
-Encrypted replication between QNAP NAS Servers
Desktop backup by QNAP NetBak Replicator for Windows
Apple Time Machine support with backup management
Data backup to multiple external storage devices
Data backup to Cloud storage (Amazon S3, ElephantDrive, Symform and Google Drive)
IP filter & policy-based automatic IP blocking
Network Access Protection With Auto-Blocking: SSH, Telnet, HTTP(S), FTP, CIFS/SMB, AFP
Encrypted Access: HTTPS, FTP with SSL/TLS (explicit), SSH/ SFTP (admin only), encrypted remote replication between QNAP NAS servers (Rsync over SSH)
CIFS host access control for shared folders
Antivirus protection
Importable SSL certificate
Instant alert via E-mail, SMS, instant messaging (Windows Live), beep and LCD panel
Disk Management Single disk, JBOD, RAID 0/1/5/5+Hot Spare
Global Hot Spare
Online RAID capacity expansion & online RAID Level migration
Bad block scan & hard drive S.M.A.R.T.
RAID recovery
Bitmap support
iSCSI (IP SAN) iSCSI target with multiple LUNS per target (Up to 256 targets/LUNs combined)
LUN mapping & masking
Online LUN capacity expansion
Supports SPC-3 persistent reservation
Supports MPIO & MC/S
iSCSI LUN backup, one-time snapshot and restore
iSCSI connection and management by QNAP Finder (Windows)
Stack Chaining Master: Up to 8 virtual disk drives (via iSCSI initiator)
Server Virtualization and Clustering Supports VMware vSphere (ESX/ESXi 4.x, ESXi 5.x)
Supports Citrix XenServer 5.x,6.x
Supports Windows Server 2008 R2 and Windows Server 2012 Hyper-V
Supports Windows Server 2008 R2 and Windows Server 2012 failover cluster
Power Management Wake on LAN
Internal hard drive Standby mode
Scheduled power on/off (max 15 settings)
Automatic power on after power recovery
USB and network UPS support with SNMP management
Access Rights Management Maximum No. of Users: 4096
Maximum No. of User Groups: 512
Maximum No. of Network Shares: 512
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, Video Station And Multimedia Station
Subfolder permissions support for CIFS/SMB, AFP, FTP and web file manager
Domain Authentication Integration Microsoft Active Directory (AD)
LDAP Server
LDAP client
Domain users login via CIFS/SMB, AFP, FTP and Web File Manager
myQNAPcloud Service Private cloud storage and sharing
Free host name registration (DDNS)
Auto router configuration (via UPnP)
CloudLink for easy VPN connection (Windows VPN utility)
Storage Plug & Play Windows Software: QNAP Finder
Create and map shared folders
Create and connect to iSCSI Target/LUN
Web Administration Smart fan control
Dynamic DNS (DDNS)
SNMP (v2 & v3)
Resource monitor
Network Recycle Bin for file deletion via CIFS/SMB and AFP
Automatic cleanup
File type filter
Comprehensive logs (events & connection)
Syslog client
Firmware live update
System settings backup and restore
Restore to factory default
Mobile App Qmanager for remote monitoring
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
Powerful All-in-one server
Photo Station Supported File Formats:
Photo: JPG/JPEG, GIF, PNG, BMP, RAW (.arw, .srf, .sr2, .dcr, .kdc, .cr2, .crw, .nef, mrw, .pef, .paf, .3fr, .erf, .mef, .mos, .orf, .rw2, .dng, .x3f, .tif, .nrw, .raf)
Video: FLV, MPEG-4 video (H.264 + AAC)
Image slideshow with background music, thumbnails and different transition effects
Online photo editing by Pixlr editor
Geotagging photos with Google Maps
Slideshow sharing (from private albums) with password protection
Music Station Supported Audio Formats:
Local playback with USB speakers/sound card
Music streaming from DLNA/UPnP media servers
Internet Radio (MP3)
Music alarm (up to 8 alarms)
Real-Time Playback Control by QNAP Mobile App: QMobile
Video Station Web video sharing
Video Categorization and Transcoding
Supported Format: mv, avi, divx, 3gp, mov, mpeg, mpg, xvid, flv, asf, rm, dat, mp4
Video Upload:
-Up to 2048 MB in size
-Up to 320 minutes in length
-Batch upload (max 50 files)
Publish videos to Facebook, Twitter and Google+
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 2
Please Note:

*: The availabilities of DVB-T broadcasting and EPG may vary depending on the geological locations

DJ Station Live web broadcasting of music playlists
Music Sharing on Facebook
Download Station PC-less BT, FTP, HTTP download (up to 500 tasks)
BT Download with Magnet Link and PT Support:
-Supports TCP/UDP tracker protocol
-Scheduled download
-Configurable port range
-Bandwidth control
-RSS subscription and download (broadcatching)
-Selectable download files
-Configurable saving directory
HTTP/ FTP Download:
-Bulk download with wildcard settings
-RapidShare download support
Website Subscription Service: YouTube
QNAP Download Management Software: QGet
-For both Windows & Mac OS
-Manage the download tasks of multiple QNAP NAS remotely over LAN or WAN
Surveillance Station Pro Supports over 1,400 IP cameras
Includes 1 free camera license
Up to 8 camera channels via additional license purchase
Intelligent Video Analytics (IVA) for advanced video Search
Visual aids by E-maps
Surveillance client for Mac
Mobile App: VMobile (iOS & Android)
File Station File sharing across Windows, Mac and Linux/UNIX
Windows ACL
Advanced folder permission for SMB, AFP, FTP and file station
Shared folder aggregation (CIFS/SMB)
File Manager:
-Supports ISO mounting (Up to 256 ISO files)
-File viewing via Google Doc
-Create and send download links for public file sharing with expiration time and password protection
-File drag-n-drop via Chrome and Firefox browsers
-Photo, music and video preview and playback with transcoding
-File compression (ZIP or 7z)
-Advanced search
Mobile App: Qfile for file browsing and management
FTP Server FTP over SSL/TLS (explicit)
Max No. of Concurrent Connections: 256
FXP supported
Passive FTP port range control
FTP bandwidth & connection control
Unicode support
Backup Solution Remote replication server (over Rsync)
Real-time remote replication to another QNAP NAS or FTP server
Apple Time Machine support
Windows Client Backup Application: QNAP NetBak Replicator
Third Party Backup Software Support: Veeam Backup & replication, Acronis True Image, ARCserve Backup, EMC Retrospect, Symantec Backup Exec, LaCie SilverKeeper, etc.
App Center Add new features by online installation of official and community apps* 3
Please Note:

:*The actual available apps may vary depending on the NAS platform

Print Server Max No. of Printers: 3
Supports Internet Printing Protocol -Print job display and management -IP- and domain name-based privilege control
Supports Apple Bonjour printing
VPN Server Secure Remote Access: PPTP & OpenVPN VPN services
Remote access to other resources on local network
Max No. of Clients: 30
Web Server HTTP/HTTPS connections
Supports WebDAV connection
Support virtual host (Max: 32)
Importable SSL certificate
Database Server Built-in MySQL server
Web-based management via phpMyAdmin (app center)
Syslog Server Centralized log monitoring and archiving
Immediate E-mail alerts
Supports log filtering
RADIUS Server Centralized account management and authentication for network access
Supports PAP, EAP-TLS/PAP, and EAPTTLS/PAP authentication
iTunes Server Audio and video sharing for Windows & Mac iTunes (MP3, AIFF, WAV, MPEG-4, AAC, M4A)
Smart playlist
Antivirus Protection against the latest known viruses, Trojans and other threats
Free Virus databases update on manual or scheduled basis
Multiple scan tasks (max: 64, concurrent: 5) with custom folder selection and scheduled scanning
E-mail notification upon task completion or virus detection
Quarantines or deletes infected files
Type External power adapter
Power Supply 120 W, Input: 100-240 V
Power Consumption Sleep Mode: 13 W
In Operation: 26 W (with 4 x 500 GB HDD installed)
Temperature 32 to 104°F (0 to 40˚C)
Relative Humidity 0 to 95%
Dimensions (WxHxD) 7.09 x 6.97 x 9.25" (180 x 177 x 235 mm)
Weight 6.6 lb (3 kg)
Qnap TS-421 4-Bay NAS Server
  • Ethernet Cable
  • Power Cord
  • 12 x Flat Head Screws (for 2.5" HDD)
  • 16 x Flat Head Screws (for 3.5" HDD)
  • Adapter
  • 2-Year Warranty
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