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Qnap TS-420U 4-Bay NAS Server for SMBs

B&H # QNTS420U Mfr # TS-420U
In Stock
Free Expedited Shipping
You Pay: $529.00
Product Highlights
  • High-Performance 4-Bay NAS Server
  • Marvell 1.6 GHz Processor
  • 1GB DDR3 RAM
  • USB 2.0/USB 3.0/eSATA Interface
  • 2 x Gigabit RJ-45 Ethernet Ports
  • iSCSI and Virtualization Deployment
  • Feature-Rich Business Applications
  • Easily-Deployed Private Cloud Storage
  • Energy Efficient & Eco-Friendly

The TS-420U 4-Bay NAS Server for SMBs from QNAP is an all-in-one rack mount network attached storage (NAS) server optimized for small and medium businesses looking for an affordable yet high performance network storage solution. The NAS server is a high-performance 4-bay NAS server with large capacity storage and file sharing. It acts as a backup center for business-critical applications. The NAS server can hold up to 4 hard drives and is designed to be easily installed in the server room and configured with up to 12TB of storage capacity. This server is an ideal solution for centralized data backup, cross-platform file sharing, iSCSI/IP-SAN storage combo solution and a number of business applications. Moreover, the NAS server offers exceptionally low power consumption, reliable system operations and capacity expandability.

The intuitive MyCloudNAS service simplifies the process of publishing content residing on the NAS server over the Internet and helps IT administrators to create private cloud storage in just a few simple steps. The mobile app QMobile provides users with iOS or Android mobile devices a convenient way to access the NAS server on the go.

Large Capacity Storage and File Sharing

Cross-Platform Sharing with Antivirus
The NAS server supports SMB/CIFS, NFS and AFP protocols for file sharing across Windows, Mac, and Linux/UNIX networks. User accounts and shared folders can be created via the user-friendly web-based interface without IT expertise. The integrated antivirus solution ensures business continuity by offering protection against the latest viruses, malware, worms and Trojan horses
Windows Active Directory (AD) and LDAP Directory Service
The Windows AD and LDAP (Lightweight Directory Access Protocol) directory service features enable the IT administrator to retrieve user accounts from Windows AD or LDAP-based directory server to the server, reducing time and effort in account setup. Users can use the same login name and password to access the NAS server. In addition, the NAS server can be configured as an LDAP server and allows devices with LDAP protocol enabled to be joined in the directory and share the same user accounts and groups
Shared Folder Aggregation
You can access the shared folders of other servers on Microsoft networking through the "portal folder" on the server. This saves the time and effort in logging in multiple servers one by one
ISO File Archiving and Sharing
The NAS server supports mounting ISO images of CD and DVD discs as network shares for data archiving, storage and sharing. This feature saves the space for storing physical discs, reduces the risk of data loss caused by disc wearing and tearing as well as enhances the efficiency of data sharing on business network
Advanced Folder Permissions
Advanced folder permissions allow you to configure folder/subfolder access to the server. With this feature enabled, users can manage the folder permissions from Microsoft Windows or the web-based management interface of the NAS server easily

Secure Data Storage and Access

Policy-Based Unauthorized IP Blocking
The IT administrator can allow, deny or auto block specified IP addresses or network domains which attempt to connect to the NAS server via SSH, Telnet, HTTP(S), FTP, Samba or AFP
Remote Login
The NAS server supports remote login via Secure Shell (SSH) or Telnet connection
SSL Security (HTTPS)
The NAS server supports HTTPS connection. The IT administrator can upload a secure certificate and RSA private key in X.509PEM format issued by a trusted provider to allow access to the NAS server via secure SSL login
Secure FTP
The NAS server offers secure data transfer with SSL/TLS (explicit) encryption. The passive FTP port range setup is also supported
Encrypted Remote Replication by Rsync
The data on the NAS server can be backed up to or from another Turbo NAS or Rsync server over the network securely
Shared Folder Management
The IT administrator can choose to hide or show selected shared folders of the NAS server on Windows network
User Authority Management
Create multiple users and specify their password, quota and user groups by simply uploading the batch files in TXT or Excel CSV format to the NAS
VPN Server
Build up a private network with QNAP VPN Server support and allow inbound access by Windows, Mac, Linux and even iOS and Android devices. The connections are secured with up to 256-bit encryption

Backup Center for Business

Well-Rounded Backup Solutions
The NAS server offers the IT administrator flexible server backup solutions, including encrypted remote replication, Real-Time Remote Replication (RTRR) and cloud-based storage backup. Windows and Mac users can use QNAP NetBak Replicator utility and Time Machine respectively to back up data to the server. Furthermore, the NAS server supports third-party backup software such as Veeam Backup & Replication and Acronis True Image
Disaster Recovery Solution
The NAS server offers users peace of mind, business continuity and high availability of data by providing the ability to recover their data from disasters
Real-Time Remote Replication
Real-Time Remote Replication (RTRR) provides real-time or scheduled data replication between the NAS server and a remote QNAP NAS, an FTP server or an external drive
iSCSI LUN Snapshot/Backup
Server virtualization reduces IT expenditure yet provides flexible server management. Adopting a proper data protection and disaster recovery for virtual machines has become vastly important. The NAS server has taken iSCSI LUN backup/restore to an advanced level with snapshot technology. The IT administrator can use the LUN snapshot to back up contents in the LUN to various storage destinations, including Windows shared folders via SMB/CIFS, Linux shared folders via NFS or local shared folders on the NAS server
Cloud Storage Backup
You can send private data to the clouds. The NAS server supports Amazon S3, ElephantDrive and Symform cloud storage backup which have several backup modes including real-time, scheduled backup and versioning control so that the data can be restored from any point of time. With ElephantDrive, cloud storage can be monitored through a web browser. An additional set of all the data stored will always be available, so remote data recovery is quick and simple
Backup to External Drive via USB 3.0
The IT administrator can connect external storage devices to the Turbo NAS via the eSATA or USB ports and back up data in the NAS shared folders to the external devices. The three backup modes provided are instant, scheduled and provide automatic backup. The Turbo NAS features USB 3.0 ports for high-speed backup to external hard drives. EXT3, EXT4, NTFS and HFS+ file systems are supported to ensure compatibility with Windows, Mac OS X and Linux operating systems

iSCSI and Virtualization Deployment

NAS + iSCSI Combo Solution
The NAS server can serve as a NAS for file sharing and iSCSI storage concurrently
Flexible Management
The NAS server supports multiple LUNs (Logical Unit Numbers) and iSCSI targets. The LUNs can be flexibly mapped to, unmapped from and switched among different iSCSI targets
Secure Deployment
Designed with CHAP authentication and LUN masking, the advanced ACL (Access Control List) offers the capability to block unauthorized access from the initiators

Feature-Rich Business Applications

File Server
The NAS server provides seamless file sharing cross Windows, Mac, Linux and UNIX platforms. It also supports WebDAV for easy access to shared folders via HTTP/HTTPS protocol remotely
FTP Server
The IT administrator can establish an FTP server with the NAS server and share files conveniently with colleagues or customers
Backup Center
The NAS server offers a centralized backup center for Mac users using Time Machine and Windows users using QNAP NetBak Replicator utility
Web Server
The IT administrator can host multiple websites on the NAS server with the built-in web server and virtual host feature
RADIUS Server
The RADIUS server centralizes and consolidates user authentication by maintaining a list of user accounts that are authorized for remote network access through dial-up equipment, Wi-Fi access point or VPN connections
Syslog Server
The RADIUS server centralizes and consolidates user authentication by maintaining a list of user accounts that are authorized for remote network access through dial-up equipment, Wi-Fi access point or VPN connections. By collecting and storing the logs of other network devices on the NAS server with the Syslog server feature, the IT administrator can easily monitor the status of these devices and troubleshoot problems when necessary
Printer Server
The NAS server offers printer sharing over the network and remote printing over the Internet via IPP (Internet Printing Protocol). Print job management and Bonjour printing for Mac OS X are also supported
Surveillance Station Pro
The Surveillance Station Pro supports over 1,400 IP cameras, ranging from high-end to low-end models and is compatible with ONVIF specifications. Administrators can purchase additional licenses to increase the number of channels based on their surveillance needs. iOS and Android users can install the VMobile app to monitor the surveillance channels anytime and anywhere with the functions of camera live view, motion-detection recording, PTZ control, instant event notifications, video snapshot and advanced playback and search functions
IPv6
The NAS server supports IPv6 (Internet Protocol Version 6) which makes the NAS a dual-stack IP host running IPv4 and IPv6 at the same time
VPN Server
The VPN (Virtual Private Network) service allows you to access the NAS and other resources on the same local network from the Internet
LDAP Server
LDAP Server service allows devices with LDAP protocol enabled to be joined in the directory and share the same user accounts and groups
Software Expansion via QPKG Center
QPKG Center is a software expansion platform to install third-party software on QNAP NAS. Instead of abstruse Linux command line installation process, QPKG center facilitates the operation by providing one-click installation
Proxy Server
With the help of Squid QPKG, the QNAP NAS server can be used as a proxy server. Internet cache speeds up web browsing; web filtering and monitoring enhances business Internet security
Private Cloud Storage
The NAS server helps you reap all the benefits of cloud computing. A private cloud for business use can be built easily. This cloud provides flexible ways for data access, sharing and backup, virtually anytime, anywhere
MyCloudNAS Service
The MyCloudNAS service simplifies the process of publishing contents in the NAS server over the Internet. It provides a web-based portal for file management and access, and supports backing up important data from the NAS server to other cloud storage providers such as Amazon S3, ElephantDrive and Symform

MyCloudNAS Access Code

Email Invitation
The MyCloudNAS service provides an easy way to send out an email invitation to friends. The invitation contains step-by-step instructions on accessing the server. It also provides a link to download the Windows application MyCloudNAS Connect, which allows you to easily set up and connect to the NAS server even without proficient networking skills
Mobile Apps for On-the-Go Access and Monitoring
Qfile is an app that allows you to browse and manage files on the Turbo NAS. The Qmanager app turns your mobile devices into a remote control and helps monitor and manage the Turbo NAS. The terabytes of photos, music and videos stored on the Turbo NAS are ready to be streamed by Qmobile from anywhere regardless of the actual storage size of the mobile devices. Qmobile also provides a convenient way for uploading photos from the mobile devices to the Turbo NAS for instant sharing

Advanced Features

Advanced RAID Management with Hot-Swap Design
The NAS server offers RAID 0, 1, 5, 6, 10, 5+hot spare, single and JBOD disk configurations. It also supports hot-swap design so that a failed member drive of a RAID configuration (RAID 1 or above only) can be replaced by hot swapping without turning off the server
Global Hot Spare
The Global Hot Spare feature allows the IT administrator to share spare drives with multiple RAID volumes on the server. When a hard drive fails in any RAID volume, the global hot-spare drive will automatically replace the failed drive to prevent data from being lost. Compared with a local spare drive, the Global Hot Spare function offers more efficient use of spare drives
Online RAID Capacity Expansion
The storage capacity of a RAID configuration can be expanded by replacing larger hard drives. All the data will be kept and seamlessly moved to the newly installed hard drives without turning off the server
Online RAID Level Migration
You can upgrade the disk configuration to a higher RAID level with the data retained, without turning off the server
IP-SAN/ iSCSI Storage and Virtual Disk Drives (VDD) for Storage Expansion
The NAS server provides a cost-efficient iSCSI solution to set up an IP-SAN storage. With the built-in iSCSI initiator, the NAS server can also connect to other iSCSI targets over the network and turn them into virtual disk drives (VDD)

User-Friendly System Management

Instant SMS and Email Alert*
Configure the SMTP server and SMS server settings on the Turbo NAS in order to receive instant system warning or error messages via email and SMS 1
SNMP (Simple Network Management Protocol)
You can collect the information, warning or errors of the NAS server and send warnings to up to 3 SNMP servers for centralized management and real-time monitoring
S.M.A.R.T. & Advanced Hard Drive Health Scan (HHS)
Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) helps the IT administrator monitor hard disk status. Moreover, the NAS server supports Hard Drive Health Scan (HHS) for disk checking and bad blocks scanning

Deployment

Multiple LAN Deployment
The NAS server supports multiple bonding modes: Balance-rr (Round-Robin), Active Backup, Balance XOR, Broadcast, IEEE 802.3ad, Balance-tlb (Adaptive Transmit Load Balancing) and Balance-ALB (Adaptive Load Balancing)
Failover
The LAN ports of the NAS server can be configured in failover mode that allows the NAS server to sustain the failure of one network port and provide continuous service
Load Balancing
The LAN ports of the NAS server can be configured in load balancing mode for bandwidth aggregation to boost file transfer speeds. It works with managed Ethernet switch with 802.3ad configured
Multi-IP Settings
The NAS server can be deployed with multiple different IP settings for sharing among different workgroups in two different subnets
Wireless LAN
Connect the NAS server to the wireless network through a USB Wi-Fi dongle for convenient access. The NAS server is compatible with fast 802.11n and 802.11g dongles for Wi-Fi connection
Superior Performance
The Gigabit Ethernet interface and fast processor enable the NAS server to deliver superior performance and high reliability for critical applications

Power Management

Wake-on-LAN
You can enable this option to power on the NAS server remotely by Wake-on-LAN
Hard Drive Standby
Configure the hard drives to enter standby mode if there is no drive access within the specified period
Scheduled Power On/Off
The flexible scheduled power on/off feature is provided for IT administrators to manage the up time of the NAS server according to the working hours. The administrator can set the time for automatic system power on, power off or restart on any days of the week
UPS Support
The NAS server supports USB UPS devices (usbhid-ups supported) to allow users to store the data in time and avoid critical data loss when power outage occurs during data transfer. The network UPS allows multiple NAS servers on the same physical network to be protected by a single UPS via receiving UPS notification on abnormal power supply
Eco-Friendly & Energy Efficient
The NAS server features green technologies to protect the environment and save electricity .The smart fan monitors the system temperature of the NAS server and automatically adjusts its speed to ensure quiet operation and power saving. The hard drives can be set to enter standby mode after an idle period to reduce power consumption and extend hard drive lifespan. Scheduled power on/off feature provides flexibility to only allow the NAS server to operate in designated time and therefore minimize power usage
Hardware
CPU Marvell 1.6 GHz
DRAM 1 GB DDR3 RAM
Flash Memory 16 MB
Hard Disk Drive 4 x 3.5" or 2.5" SATA I/II Hard Disk Drive* (HDD)
For the hard disk drive compatibility list, Click here 1
Please Note:

*:The system is shipped without hard disk drives.

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Hard Disk Tray 4 x hot-swappable and lockable tray
LAN Port 2 x Gigabit RJ-45 Ethernet port
LED Indicators USB, Status, HDD 1, HDD 2, HDD 3, HDD 4, LAN
USB 2 x USB 3.0 port
2 x USB 2.0 port
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
Alarm Buzzer System warning
Form Factor Rack mount
Fan 2 x 1.6" (4 cm) quiet cooling fan, 12 V DC
Software
Operating System QNAP Firmware v3.8
Supported Operating Systems Windows XP, Vista, Windows 7 (32/64-bit), Windows 8 (32/64-bit), Windows Server 2003/2008 R2/2012
Apple Mac OS X
Linux & UNIX
Supported Web Browsers Microsoft Internet Explorer 8, 9, 10
Mozilla Firefox 8, 9, 10
Apple Safari 4, 5
Google Chrome
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 HDD: EXT3, EXT4
External HDD: EXT3, EXT4, NTFS, FAT32, HFS+
Networking TCP/IP (IPv4 & IPv6: Dual Stack)
Dual Gigabit NICs with Jumbo Frame:
-Failover
-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 based on network interfaces
Virtual LAN (VLAN)
Proxy client
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
USB one-touch backup (import/export)
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)
Security 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
Disk Management Single disk, JBOD, RAID 0/1/5/5+Hot Spare/6/10
Online RAID capacity expansion & online RAID Level migration
Bad block scan & hard drive S.M.A.R.T.
Global hot spare drive
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 cChaining 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 User accounts management
User groups management
Network shares 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, 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
MyCloudNAS Service Private cloud storage and sharing
Free host name registration (DDNS)
Auto router configuration (via UPnP)
MyCloudNAS Connect 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 AJAX-based user interface
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
Powerful All-in-one server
File Server File sharing across Windows, Mac and Linux/UNIX
Windows ACL
Advanced folder permission for SMB, AFP, FTP, Web File Manager
Shared folder aggregation (CIFS/SMB)
Web File Manager
-Supports ISO mounting (Up to 256 ISO files)
-Direct file viewing via Google Doc
-Create and send download links for public file sharing with expiration time and password protection
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 Server 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: Acronis True Image, CA BrightStor, ARCserve Backup, EMC Retrospect, Symantec Backup Exec, LaCie SilverKeeper, etc.
Web Server HTTP/HTTPS connections
Supports WebDAV connection
Support virtual host (Max: 32)
Importable SSL certificate
Database Server Built-In ySQL Server
Web-based management via phpMyAdmin (QPKG)
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
Syslog Server Centralized log monitoring and archiving
Immediate Email alerts
Supports log filtering
RADIUS Server Centralized account management and authentication for network access
Supports PAP, EAP-TLS/PAP, and EAPTTLS/PAP authentication
VPN Server Secure Remote Access: PPTP & OpenVPN VPN services
Remote access to other resources on local network
Max No. of Clients: 30
Surveillance Station Pro Supports over 1,400 IP cameras
Includes 1 free camera license
Up to Max. 12 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)
iTunes Server Audio and video sharing for Windows & Mac iTunes (MP3, AIFF, WAV, MPEG-4, AAC, M4A)
Smart playlist
Multimedia Station Browser-based photo, audio and video streaming
Image slideshow and rotation
Automatic & scheduled thumbnail generation for easy browsing
Display Photo Details from EXIF: Date, Exposure Time, Aperture, etc.
Display Audio Details from ID3 Tag: Album Cover, Title, Artist, Album, etc.
Access Authority Management
Supports web publishing (Facebook, MySpace, MSN Live, Twitter, Plurk, Blogger)
Share photos by Email
Supported Formats:
-Photo: JPG/JPEG, GIF, PNG
-Audio: MP3
-Video: Playback: FLV, MPEG-4 Video (H.264 + AAC)
Transcode: AVI, M4V, MPG/MPEG, RM/RMVB, WMV
QNAP exclusive iPhone & Android App - Qmobile
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
Photo publishing to social websites (Facebook, MySpace, Twitter, Plurk, and Blogger)
Photo sharing by Email
Music Station Supported Audio Formats:
MP3, MP4, OGG, WAV, AIFF, AU, FLAC, M4A, APE, AAC
Local playback with USB speaker/sound Card
Browse other UPnP media servers on local network
Internet radio (MP3)
Music alarm (up to 8 alarms)
Playback control by QNAP Mobile App: QMobile Music remote
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)
Publish videos to Facebook, Twitter, and Google+
TV Station DVB-T* digital TV Liveview, 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.

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Download Station PC-less BT, FTP, HTTP download (up to 500 tasks)
BT Download:
-Supports TCP/UDP tracker protocol
-Scheduled download
-Configurable port range
-Bandwidth control
-UPnP NAT port forwarding
-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
DJ Station Live web broadcasting of music playlists
Share with Facebook friends
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
Email notification upon task completion or virus detection
Quarantines or deletes infected files
QPKG Center Expands application services by easy online installation with a wide variety of official and community QPKG*Add-ons 3
Please Note:

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

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Power
Power Supply 100-240 V AC, 50/60 Hz
Output: 250 W
Power Consumption Sleep Mode: 15 W
In Operation: 29 W (with 4 x 500 GB HDD installed)
Environmental
Temperature 32 to 104°F (0 to 40˚C)
Relative Humidity 0 to 95%
General
Dimensions (WxHxD) 16.97 x 1.73 x 19.02" (431 x 44 x 483 mm)
Weight 14.77 lb (6.7 kg)
Qnap TS-420U 4-Bay NAS Server for SMBs
  • CD-ROM
  • 2 x Ethernet Cables
  • 8 x Screws
  • 2 x Handles
  • Power Cord
  • 2 x Mount Kits
  • Hard Disk Lock
  • 16 x Flat Head Screws (for 3.5" HDD)
  • 12 x Flat Head Screws (for 2.5" HDD)
  • 2-Year Warranty
  • Replacement Drives

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    WD -  4TB WD Red SATA 3.5" Internal HDD (WD40EFRX)
    • You Pay: $174.99
     

    Cables & Adapters

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    Pearstone -  3.3' eSATA Male to eSATA Male Cable (Black)
    • You Pay: $4.95
     
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