  The SS-839 Pro Turbo NAS is the 8-bay, 2.5" SATA HDD
network-attached storage server for business users who need a power-saving, high
performance, and reliable network storage solution with professional features such as
advanced RAID protection, built-in iSCSI target service, and AES 256-bit volume-based
encryption.
Energy-saving and quiet design
The SS-839 Pro is the smallest 8-bay NAS in the market and can be easily deployed anywhere
in the office. It is also an energy-saving storage solution with excellent cooling and low
noise design. The power consumption of the NAS is only 34W in operation (in RAID 5
configuration with eight 500GB hard drives installed), which helps save your electricity
expense to a large extent.
Superior Performance and Advanced RAID Redundancy
Powered by Intel Atom 1.6 GHz CPU and 2GB DDRII memory, the SS-839 Pro supports RAID 0/ 1/
5/ 6/ 5 + hot spare, single, and JBOD, Online RAID Capacity Expansion, and Online RAID
Level Migration.
Secure Data Protection by AES 256-bit Volume-based Encryption
To meet the demand for high security data protection of the business users, the SS-839 Pro
supports AES 256-bit volume-based encryption. The encrypted disk volumes of the NAS must
be unlocked by the encryption password to be accessed, which eliminates the fear of
confidential data leakage if the hard drives or the NAS were stolen.
iSCSI Solution
with Virtual Space Allocation
The SS-839 Pro can serve as a NAS and an iSCSI target server. The built-in iSCSI target
feature provides an affordable IP-SAN (Storage Area Network) alternative. Also, 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
regardless of the physical volume capacity.
Versatile Applications for Business
The SS-839 Pro supports file sharing across Linux, UNIX, Mac, and Windows platforms.
Versatile business applications are supported, e.g. file server, FTP server with
encryption, printer server, web server, and encrypted remote replication. Also, Windows AD
(Active Directory) is supported to help create an easy-to-access environment and lower the
maintenance cost.
Easy Setup and Low-cost Maintenance
The handy LCD display on the NAS provides a speedy and easy approach for IT administrators
to initialize the NAS and set up the RAID configuration without using any computer. The
system information and settings are also displayed for easy management. The schedule power
on/off feature is available on the NAS for IT administrators to flexibly manage the NAS
server's up time according to the working hours. Also, the smart Wake on LAN is supported
for convenient remote wakeup of the NAS in the local network.
 The Best Storage Solution for Power Conservation
The SS-839 Pro delivers distinguished energy-saving performance and reduces the
electricity consumption to a large extent by supporting the 2.5" SATA hard drives.
The power consumption of the NAS in operation with eight hard drives installed is as low
as 34W. The power consumption of SS-839 Pro is almost 60% less than general 3.5"
8-bay NAS. Also, the NAS adopts predominant heat dissipation and ultra silence design,
making it a cool and quiet solution in the working environment with the use of the low
vibration and highly reliable 2.5" hard drives.
The Most Affordable and Flexible iSCSI Solution
The SS-839 Pro can serve as a NAS and an iSCSI target server. The built-in iSCSI target
feature provides an affordable IP-SAN (Storage Area Network) alternative for SMB. You can
set up the NAS to expand the storage capacity for existing application servers, such as
database server and mail server in an economic way. Moreover, 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 regardless of
the physical volume capacity.
Secure Data Protection by AES 256-bit Volume-based Encryption
The SS-839 Pro's dominant "volume-based encryption" feature secures the server
data by AES 256-bit encryption. Even if the hard drives were stolen, there is no need to
fear that the confidential data would be leaked since the data can only be accessed by an
authorized password.
Benefits of Dual Gigabit LAN Deployment
Failover Supported for Network Reliability
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.
Better Performance with 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 for Serving Two Different Subnets
The NAS 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.
Built-in iSCSI
Target Service
The SS-839 Pro 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). 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.
Application Diagram of NAS Plus iSCSI All-in-one System
A. iSCSI Application: Storage expansion for application servers
B. NAS Application: File sharing through SMB/CIFS, AFP and NFS
 S.M.A.R.T. & Advanced HDD Health Scanning (HHS)
The NAS supports Hard Disk Drive S.M.A.R.T. (Self-Monitoring Analysis and Reporting
Technology) for monitoring the hard drive status. Moreover, the NAS is embedded with HHS
Technology which supports disk checking and bad blocks scanning.
High Manageability NAS for Business
Touch-N-Go PC-less Installation
You can use the handy LCD to finish the first time installation in 3 simple steps. The NAS
will automatically complete the hard disk formatting and RAID building.
Easy Installation
Step 1: Press the tray lock.
Step 2: Push the tray button and take out the tray.
Step 3: After installing HD, insert the disk trays to the NAS and push the disk trays to
the end.
Cross-platform Data Sharing and Storage Center
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 users can use the same set of login name and
password.
Web File Manager
The NAS 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 NAS 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.
Power Management
Hard Disk Standby
You can configure the hard disks 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 now provided on the NAS for you to manage
the NAS server's up time according to the working hours. You can set the time for
automatic system power on, power off, or restart on any days of the week.
UPS Support
The NAS supports the majority of USB UPS devices (usbhid-ups supported) 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 users 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.
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 one touch copy button can be configured to trigger 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). Press the button for 3 seconds and the backup will start
instantly.
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.
Policy-based Unauthorized IP Blocking
To prevent the NAS from malicious attacks, you can create an IP filter policy to allow,
deny, or auto-block the IP address or network domain which attempts to connect to the NAS
via SSH/ Telnet/ HTTP(S)/ FTP/ samba/ AFP.
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.
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.
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.
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