QNAP SS-839 Pro Turbo NAS SS-839-PRO-EU User Manual

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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 SS-839 Pro 
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 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 you 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 you 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.

Failover allows the NAS to 

sustain the failure of one 

network port to provide 

continuous services.

Bandwidth aggregation is 

supported to boost the file 

transfer speed (works with 

managed Ethernet switch 

with 802.3ad configured).

The NAS can be deployed 

with two different IP settings 

for sharing among different 

workgroups in two different 

subnets.

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.

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.

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.

For small business, a high-performance and flexible storage expansion solution 

for the existing application servers is required. However, DAS (Direct Attached 

Storage) is not an efficient solution and a Fiber Channel SAN is too expensive 

and complicated to implement.

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.

The “Virtual Space Allocation” (Thin Provisioning) feature is provided which allows 

you to flexibly allocate the capacity of iSCSI LUN at the beginning regardless of 

the physical volume capacity. When the physical storage capacity of the volume is 

going to be full, you can easily expand the storage capacity of the NAS by “Online 

RAID Capacity Expansion”, or adjust/ remove the current unused volume space 

according to the demands.

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.

The data on the Turbo NAS can be backed up to or from another Turbo NAS or 

Rsync server over the network.

Acronis True Image, CA BrightStor ARCserve Backup, EMC Retrospect, 

Symantec Backup Exec, and LaCie Silverkeeper.

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.

The SS-839 Pro’s dominant “volume-based encryption” feature enables you to 

build encrypted disk volumes on the NAS for the first time installation. The disk 

volume is securely protected by AES 256-bit encryption. An encryption key is 

required to unlock the encrypted volume to access the server data. This prevents 

data leakage if the server or the hard drives were stolen.

Volume 1

iSCSI Application: 

Storage expansion 

for application 

servers

LUN2 for server #2

LUN1 for server #1

Application

Server #1

Application

Server #2

IP-SAN

Volume 2

Public

Sales

NAS Application: 

File sharing 

through SMB/CIFS, 

AFP and NFS

Office

Partner

Application Diagram of NAS Plus iSCSI All-in-one System

Secondary Network Connection

Primary Network Connection

Switch

1. Data flow from clients
2. Data traffic evenly distributed

to balance network loading

Switch

All the OS and applications are embedded on the DOM (Disk on Module) of the    

SS-839 Pro to allow system booting without accessing the physical disk sectors, which 

prevents 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.

You can use the handy LCD to finish the first time installation in 3 simple steps. The 

SS-839 Pro will automatically complete the hard disk formatting and RAID building. 

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1  Policy-based Unauthorized IP Blocking: You can allow, deny or 

auto block specified IP address or network domain which attempts to connect 

to Turbo NAS via SSH/ Telnet/ HTTP(S)/ FTP/ samba/ AFP.

2  Comprehensive Event Log System: Detailed logs of file-level data access to 

the Turbo NAS via samba, FTP, AFP, HTTP, HTTPS, Telnet, iSCSI, and SSH; 

networking services accessed by online users are all recorded.

4  Remote Login by SSH (secure shell) or Telnet connection is supported.
5  SSL Security (HTTPS): The Turbo NAS can be accessed and configured by 

the web browser securely. You can upload a secure certificate and RSA private 

key in X.509PEM format issued by a trusted provider for the users to access 

the Turbo NAS by secure SSL login.

6  Secure FTP: The data can be transmitted with SSL/TLS (explicit) encryption. 

Passive FTP port range setup is also supported.

7  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.

8  Encrypted Remote Replication : The data on the NAS can be backed up 

to or from another Turbo NAS over the network securely.

3  Syslog Setting: All the system event logs and connection logs can be saved to 

a remote syslog server.

9  Share Folder Management: For the security of Windows network environment, 

you can hide or show network share folders.

10  User Authority Management: You can create user ID and password, and  

  define the authority and quota for each user.

250GB

250GB

250GB

250GB

250GB

250GB

250GB

250GB

500GB

500GB

500GB

500GB

500GB

500GB

500GB

500GB

The NAS supports Hard Disk Drive S.M.A.R.T. (Self-monitoring 

Analysis and Reporting Technology) for you to monitor the hard 

drive condition and prevent potential data loss.

Enable this option to power on the NAS remotely by Wake on 

LAN. Wake on LAN helps you manage your NAS conveniently.

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.

The NAS supports batch creation of users and network share 

folders to save your time and effort in user account and folder 

creation.

The embedded HDD HHS technology is provided for disk 

checking and bad blocks scanning of the NAS to secure your 

server data.

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.

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.

The QPKG software package platform enables the users to maximize the usage

of Turbo NAS by installing additional software packages developed by the users

and community worldwide.

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” SATA HDD 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.

Supports access of multiple IP from different LAN areas

LAN 2

LAN 1

Switch

Switch