High Performance NAS for Business

Benefits of Dual Gigabit LAN Deployment
Failover
The dual LAN ports can be configured as failover which allows the NAS server to sustain the failure of one network port to provide continuous services.

Load Balancing
The two LAN ports of the NAS can be configured as load balancing mode for bandwidth aggregation to boost the file transfer speed (works with managed Ethernet switch with 802.3ad configured).

Multi-IP Setting
The TS-439U-RP/ SP can be deployed with two IP settings for sharing among different workgroups in two different subnets.

High Reliability, Disaster-proof NAS for Business
DOM Architecture with Embedded Fail-safe Dual OS
All the OS and applications are embedded on the DOM. The NAS allows system booting without accessing the physical disk sectors and that avoids unsuccessful system startup caused by bad block sectors or file errors on the hard drives. Two operating systems are built on the DOM for system booting alternatively upon every system startup. When one fails, the other one will be used to boot up instead, and the failed OS is recoverable from the other healthy OS.
Advanced RAID Management with How-swap Design
The NAS offers advanced RAID 0, 1, 5, 6, 5 + hot spare, Single, and JBOD disk configurations. It also supports hot-swap design that a failed drive can be replaced by hot swapping without turning off the server. Besides, the best-in-class RAID on the NAS brings users a higher level of data security by allowing one more hard drive failure than other NAS of the same level.
Online RAID Capacity Expansion
The storage capacity of a RAID configuration can be expanded by replacing the hard drives with larger ones. All the data will be kept and seamlessly moved to the newly installed hard drives. There is no need to turn off the server during the process.
Online RAID Level Migration
You can upgrade the disk configuration to higher RAID level with the data retained. There is no need to turn off the server during the process.

Virtual Disk Drive (VDD) adds flexibility to storage expansion along with ease of management
The unique "Virtual Disk Drive" adds flexibility to expand the capacity of NAS. By using the built-in iSCSI initiator, the NAS can connect to other iSCSI targets on the network and turn them into virtual disks, which become multiple single volumes on the NAS. Up to 8 virtual disks can be stacked. The NAS serves as the storage stack chaining master. The user only needs to connect to this single entry (QNAP NAS) and is able to reach and use all the iSCSI target storages on the network.

Built-in iSCSI Target Service
The TS-439U-RP/ SP can act as a NAS and iSCSI target server at the same time. It provides a cost-efficient iSCSI solution to set up an IP-SAN. You can make use of the built-in iSCSI target service to add up to 8 iSCSI devices. Different iSCSI Target LUNs (Logical Unit Number) can be defined as storage expansion or backup destination of the existing application servers, such as database servers and mail servers.
Furthermore, the "Virtual Space Allocation" (Thin Provisioning) feature is provided which allows you to flexibly allocate the capacity of iSCSI LUN (Logical Unit Number) at the beginning stage without the limitation of the volume space. When the physical storage capacity of the volume is going to be full, you can easily expand the storage capacity by "online RAID capacity expansion", or adjust/ remove the current unused volume space according to the demands.

Smart Power Management
Redundant Power Supply
The TS-439U-RP can be equipped with two power supply units, each of which is capable of supplying the power for the NAS independently. If one of the units fails, the other one will take over to supply the power. You can replace the failed power supply unit without turning off the server.
Hard Disk Standby
The hard disks can be configured to enter standby mode if there is no disk access within the specified period.
Schedule Power on/ off
The flexible schedule power on/off feature is provided on the NAS for you to manage the NAS server's up time according to the working hours.
UPS Support
The TS-439U-RP/ SP supports the majority of USB UPS devices which enables the users to store the data in time and avoid critical data loss when power outage occurs during data transfer. It also supports advanced stand-by mode setting that you can set the time for the server to enter standby mode when an abnormal AC power supply is detected. When the power resumes, the server resumes to the operation status before the power outage.
Auto Power on After Power Loss
You can configure the NAS to turn on/ off when the AC power resumes after a power loss.

High Manageability NAS for Business
Sharing Files across Windows, Mac, Linux, and UNIX
The NAS is designed for users to share the files across Windows, Mac, Linux, and UNIX environment.
Windows AD
The Windows AD feature enables you to import user accounts from AD domain to NAS to reduce the time and effort for account setup, and the users can use the same set of login name and password.
Web File Manager
The TS-439U-RP/ SP provides Web File Manager for you to easily download, upload, and manage the files on the server by web browser.
Ease of User and Share Folder Management
The TS-439U-RP/ SP supports batch creation of users and share folders to save your time and effort in account and folder creation. For the security of Windows network environment, you can hide or show network share folders.

Complete Backup Solution
QNAP Backup Software - NetBak Replicator
The backup software, NetBak Replicator, is provided for the NAS users to perform real-time synchronization or schedule backup from multiple PCs to the NAS.
3rd Party Backup Software Ready
The NAS works well with other backup software, e.g. Acronis True Image, CA BrightStor ARCserve Backup, EMC Retrospect, Symantec Backup Exec, and LaCie Silverkeeper.
Remote Replication by Rsync
The data on the NAS can be backed up to or from another Turbo NAS or Rsync server over the network.
One Touch USB Auto Copy
The USB one touch copy button can be configured to trigger instant data backup from the external USB device to the NAS or the other way round (applies to the USB device connected to the front USB port of the NAS only).

Secure data storage, access, and sharing

• Comprehensive event logs: Detailed logs of file-level data access to the NAS via samba, FTP, AFP, HTTP, HTTPS, Telnet, iSCSI, and SSH, and networking services accessed by online users are all recorded.
• IP filter control: You can allow or deny specified IP connections to the NAS.
• SSL security (HTTPS): The NAS can be accessed and configured by web browser securely.
• Remote login to the NAS by SSH (secure shell) or Telnet connection is supported.
• Secure FTP: The data can be transmitted with SSL/TLS (explicit) encryption. Passive FTP port range setup is also supported.
• Write-only access right on FTP server: The third party partners are allowed to upload data to the NAS but not able to read or edit the data on FTP server.

Powerful System Management Tools
Wake on LAN
Enable this option to power on the NAS remotely by Wake on LAN. Wake on LAN helps you manage your NAS conveniently.
Smart Fan
The fan rotation speed is automatically adjusted according to the server's temperature. You can also define the system temperatures to trigger high speed or low speed rotation of the fan. By manually setting the fan rotation speed, the fan will rotate at the defined speed continuously.
Instant SMS/ Email Alert
You can configure the SMTP server and SMSC server settings on the NAS in order to receive instant system warning or error messages by email or SMS.
SNMP (Simple Network Management Protocol)
Enable SNMP service on the NAS to actively send the information, warning or error of the NAS to max 3 SNMP trap addresses installed SNMP management tool. Moreover, MIB of NAS can be downloaded and imported to your PC with SNMP tool. Your PC can then acquire the info of the NAS actively, e.g. cpu-usage, temperature.
SSL Secure Certificate
You can upload a secure certificate and an RSA private key in X.509PEM format issued by a trusted provider in order to allow the users to access the NAS by secure SSL login.
Syslog Settings
All the system event logs and connection logs can be saved to a remote syslog server.
Network Recycle Bin
The files deleted from the network shares of the NAS will be moved to a particular recycle bin folder. You can restore your data anytime in case of unintended file deletion.
Comprehensive Event Log System
The logs of connections to the NAS via samba, FTP, AFP, HTTP, HTTPS, Telnet, iSCSI and SSH, and networking services accessed by online users are all recorded.
Detailed System Information
You can view the system status, e.g., CPU usage, total memory, free memory, packets received, packets sent, error packets, system up time, CPU temperature, system temperature, HDD temperature, and system fan speed.
Hardware Expandability
The TS-439U-RP/ SP supports 3 USB 2.0 ports. You can connect the external storage devices to the NAS for server data backup or expanding the storage capacity of the server.
Surveillance Station
The Surveillance Station enables users to configure and connect 4 IP cameras simultaneously and remotely manage the functions, including real time monitoring, recording, and playback by IE browser over the Internet. Users can flexibly define the recording settings: continuous recording, motion-detection recording, and schedule recording according to their security plan. All the files are stored in AVI format with time stamp, users can easily search and play the files by Windows Media Player.
The most comprehensive support for numerous brands of IP cameras
The Surveillance Station of QNAP NAS supports the leading network camera brands such as AXIS, D-Link, IPUX, LevelOne, Linksys, Panasonic and Vivotek etc. By using particular models, users can use two-way video and audio monitoring and recording, and smart PTZ control to control the monitoring direction via the web interface.

Software Expansion and Website Management
Web Server with Built-in phpMyAdmin
With the built-in phpMyAdmin, Joomla!, editable php.ini, MySQL and SQLite, you can easily set up your web server and other online applications such as online shops and forums.
MySQL Server
The NAS is the most affordable choice as a standalone database server for system integrators. It can be flexibly applied in various deployments such as a database server of another web server in remote site or as an additional backup database server.
Built-in DDNS support
The NAS supports dynamic DNS (DDNS). You can register a unique domain name from a DDNS service provider and assign it to your NAS. There is no more need to remember a lengthy IP address!
Software expansion via QPKG Center
The QPKG software package platform enables you to maximize the usage of the NAS by installing additional software packages developed by the users and community worldwide. This can be done by simple "download & install" clicking without going through any complicated process.

1. The system is shipped without HDD.
2. For the HDD compatibility list, please visit http://www.qnap.com/pro_compatibility.asp