QNAP TS-531P-8G-US 5-bay business-class NAS

  QNAP TS-531P-8G-US 5-bay business-class NAS
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QNAP TS-531P-8G 5-bay business-class NAS, Diskless, Annapurna Labs Alpine AL-314 Cortex-A15 (1.40GHz) Quad-Core Processor, 8GB DDR3 RAM (Up to 16GB), 512MB Flash Memory, Cost-effective, energy-efficient quad-core business-class NAS with optional 10GbE support.




Cost-effective, energy-efficient quad-core business-class NAS with optional 10GbE support

The 5-bay TS-531P is a powerful quad-core network storage system, providing the potential for 10GbE expandability at a budget price to maximize ROI, and doubles the encrypted file transfer performance with a strong hardware-accelerated encryption engine. The energy-efficient ARM Cortex-A15 processor provides ultra low power consumption for daily business operations to save cost in the long run. Powered by the QTS operating system, the TS-531P provides versatile all-in-one server functionalities as well as unique features including Container Station, which allows you to run multiple isolated Linux systems and containerized applications on the same device. The TS-531P is a cost-effective storage solution designed for growing businesses looking for backup, restoration, private cloud, storage for virtualization, and to future-proof their IT infrastructure for 10GbE networks.


  • 10GbE readiness, quad LAN ports and SSD cache
  • Hardware-accelerated encryption engine for efficient cryptographic performance exceeding 400 MB/s
  • Enjoy LXC and Docker lightweight virtualization technologies with the Container Station
  • Manage, share, and back up business data with Real-time Remote Replication (RTRR)
  • Qsirch, a near real time full-text search engine, helps quickly find specific NAS data (supported by TS-531P with 8GB RAM)
  • Scales up to 21 drives with QNAP UX-800P expansion enclosures



Quad-core CPU and hardware-accelerated encryption

The TS-531P is equipped with an Annapurna Labs Alpine AL-314 quad-core 1.4 GHz ARM Cortex-A15 processor with 2GB/8GB DDR3-1600 RAM (upgradable to 16GB), SATA 6Gb/s, and four Gigabit LAN ports (expandable to 4x GbE + 2x 10GbE ports) for lightning-fast multi-tasking performance with SSD cache support. The TS-531P's hardware-accelerated encryption engine provides unmatched encryption performance in its class, up to 400 MB/s with AES-256 bit full NAS volume encryption, boosting system performance & security while ensuring the safety of sensitive business data stored in the TS-531P.

Tested in QNAP Labs. Figures may vary by environment.

Test Environment:


OS: QTS 4.2.0

Volume type: RAID 5; 5 x Intel SSD DC S3500 240GB SSD: NAS and PCs are connected.


Client PCs:

Intel Core i7-4770 3.40GHz CPU; DDR3L 1600Hz 16GB; WD 1TB WD10EZEX; Intel Gigabit CT( MTU 1500 ) ; Windows 7 Professional 64bit SP1

IOMeter configuration: Transferring 8GB file continuously to NAS for 3 minutes. Block size: 64KB for SMB2.0 (Throughput)



Flexible 10GbE connectivity

The TS-531P offers 4 inbuilt Gigabit Ethernet ports and supports 10 Gigabit high-speed networks by installing a 10GbE SFP+ or 10GBASE-T network adapter (optional purchase). The 10GbE-ready TS-531P delivers lightning-fast data throughput for businesses that demand higher bandwidth for virtualization and fast backup and restoration for an ever-growing amount of data. Coupled with its large storage capacity potential, the TS-531P is perfect for companies to store massive data and excels in fast data transmission.




High Efficiency with quad LAN support

The TS-531P supports multiple port-trunking modes, enabling IT administrators to set up link aggregation to increase total data transmission capability. Failover and dual IP are also supported to ensure continuous system operations. The supported port-trunking modes include: Balance-rr (Round-Robin), Active Backup, Balance XOR, Broadcast, IEEE 802.3ad, Balance-tlb (Adaptive Transmit Load Balancing) and Balance-alb (Adaptive Load Balancing).



SSD cache acceleration

The TS-531P supports SSD caching which can greatly boost IOPS performance of storage volumes to increase operational efficiency. It is perfect for improving overall workflow of IOPS-demanding applications and allows the best of both cost and performance by combining SSDs with HDDs.



Container Station - LXC and Docker Containers inclusive

QNAP Container Station exclusively integrates LXC and Docker lightweight virtualization technologies, allowing you to operate multiple isolated Linux systems on the TS-531P as well as download apps from the built-in Docker Hub Registry. It supports container import/export and permission settings, and features an informative dashboard and flexible user interface for you to manage multiple containers. You can experience the amazing Container Station and enjoy the playground of virtual containers with the TS-531P. Container Station also supports Online Document app*, which allows you to directly view, edit and store files of various types anytime on your NAS, including Office documents, images and text files.

* Available by end of 2015



Qsirch - A smarter, faster way to search

TS-531P with 8GB RAM supports Qsirch*, QNAP's unique, powerful, Google Search-like search tool that helps you find what you need on the NAS. You can quickly and easily find documents, photos, videos, and music. Simply type in as much as you know about what you are trying to find, including parts of the file name or even words/phrases in the document, and Qsirch will display a list of matches – complete with thumbnails – as you type. Qsirch even remembers your search history so you can quickly navigate to files you've previously searched for. Qsirch is a huge productivity boost that greatly reduces the time spent looking for files on the NAS, allowing you to focus on other tasks.

* Available by end of 2015
Note: Qsirch requires 4GB RAM or above for the best performance.


QTS - Simple and efficient

Thanks to the intuitive user interface of QTS, your NAS experience is smarter, smoother and spectacular. Its modern flat design streamlines loading times, and the intelligent desktop allows you to find desired functions quickly, create desktop shortcuts or group shortcuts, monitor important system information on a real-time basis, and open multiple application windows to run multiple tasks concurrently, bringing greater operating efficiency.



Cross-platform file sharing, centralized data storage

The TS-531P supports SMB/CIFS, NFS, and AFP protocols for file sharing across Windows, Mac, Linux/UNIX networks. Data, logs and ISO images of CDs and DVDs can be centrally stored on the TS-531P and protected by an integrated antivirus solution. The Windows AD and LDAP services enable system administrators to configure user permissions by using an existing Windows AD server, LDAP server or built-in LDAP service. The TS-531P supports SAMBA v4 and can act as a Windows domain controller to manage privilege settings.


Well-rounded backup solutions to secure data

QNAP NetBak Replicator supports real-time and scheduled data backup on Windows including Outlook email archiving. Apple Time Machine is also supported to provide Mac OS X users with a solution to effortlessly back up data to the TS-531P. The USB 3.0 port on the front panel of the TS-531P features a one-touch-copy function for you to instantly back up data from external drives to the TS-531P with just one click, or alternatively to back up data from the TS-531P to external drives. A wide range of third-party backup software such as Acronis True Image and Symantec Backup Exec are also supported.


Disaster recovery solutions brings peace of mind

The TS-531P offers various data recovery options. RTRR (Real-Time Remote Replication) supports real time or scheduled data backup to a remote QNAP NAS or FTP server and synchronizes files to a remote folder from a local folder with better backup efficiency. You can enjoy backup versioning to preserve a certain amount of versions, with options of simple versioning to schedule how many versions should be retained and for how long, or smart versioning with a rotation scheme that automatically replaces earlier backup versions. The TS-531P also supports the rsync protocol to back up data to another remote server on a scheduled basis. Data can also be backed up to and restored from a range of cloud storage services, including Amazon S3, Amazon Glacier, Microsoft Azure, ElephantDrive, Dropbox, Google Drive, Google Cloud Storage, and more.


File synchronization across multiple devices and clouds

Qsync utility turns your TS-531P into a safe, large-capacity data center for file synchronization. Any file uploaded to the TS-531P will be made available for all linked devices, such as computers, laptops or mobile devices. Qsync is especially useful for frequent travelers to manage files and always have the most up-to-date files on different devices. You can also install the Cloud Drive Sync app from QTS App Center to easily sync files with Google Drive and Dropbox cloud storage.


Comprehensive security options

In open network environments, business data may be exposed in a potential hack. The TS-531P provides numerous security options, such as encrypted access, IP blocking, and more. IT administrators can also control the access rights of each user to different folders, preventing unauthorized access to important files. The TS-531P supports AES 256-bit encryption, preventing sensitive business data from unauthorized access and breach even if the hard drives or the entire system were stolen.




Enjoy your exclusive karaoke system with OceanKTV

QNAP OceanKTV is the first NAS-based karaoke application on the market allowing you to create a quality karaoke experience at home. The TS-453A offers high-capacity storage for accommodating up to thousands of 1080p karaoke songs. Simply attach your big-screen TV to the TS-453A via HDMI and start singing with OceanKTV. Four UI themes are provided to create the best atmosphere, and with the OceanKTV mobile app you can control the entire experience on your phone or tablet. More than a NAS, the TS-453A is a karaoke machine for singing entertainment. Enjoy alone or with your friends!



High-quality audio effect with dual microphones outputs and Line Out function

The TS-453A has two 6.3mm dynamic microphone jacks for connecting up to two dynamic microphones. Compared with the average reception quality of USB microphones, the TS-453A offers a clearer reception quality as it is equipped with a 20-bit analog-to-digital converter (ADC). On top of that, the TS-453A has a 24-bit digital to analog converter (DAC) that can send audio signals via the Line Out jack to your amplifier and deliver clearer stereo sound. By offering excellent audio output/input functionalities together with various apps, the TS-453A brings you a fantastic audiovisual experience.



Comprehensive surveillance solution providing 24/7 security

Surveillance Station is a professional network surveillance Video Management System (VMS) that offers a user-friendly management interface, over 3,000 compatible IP camera models, and expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording and playback with a wide range of customizable settings. You can also install the Vmobile app on your iOS or Android devices to manage monitored channels anytime and anywhere to safeguard your office environment, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-531P. The TS-531P includes 4 free IP camera channels and you can expand up to 40 channels by purchasing additional licenses.


Install-on-demand apps to extend NAS functionality

The built-in App Center provides various install-on-demand apps developed by QNAP and third-party developers, including tools for backup/sync, business, content management, communications, download, entertainment, and much more. It is also a centralized location for managing & updating installed apps. In addition, QNAP's development platform embraces the open-source spirit to enable developers to create their own apps, adding potentially limitless potential for the TS-531P.


HighlightsQNAP TS-531P-8G 5-bay business-class NAS, Diskless, Annapurna Labs Alpine AL-314 Cortex-A15 (1.40GHz) Quad-Core Processor, 8GB DDR3 RAM (Up to 16GB), 512MB Flash Memory, Cost-effective, energy-efficient quad-core business-class NAS with optional 10GbE support.
Hardware Specification
CPUAnnapurna Labs Alpine AL-314 Quad-core 1.4 GHz Cortex-A15 processor
Floating Point Unit: Yes
Hardware Encryption: Yes
DRAMSystem memory:
TS-531P-2G: 2GB DDR3-1600 RAM (1 x 2GB)
TS-531P-8G: 8GB DDR3-1600 RAM (1 x 8GB)
Total memory slots: 2 SODIMM
Memory expandable up to: 16 GB (2 x 8GB)
(*For dual-DIMM configurations, you must use a pair of identical DDR3 RAM modules.)
Flash Memory512MB
Hard Disk Drive5 x hot-swappable 3.5" or 2.5" SATA 6Gb/s, SATA 3Gb/s hard drive or SSD
LAN Port4 x Gigabit RJ-45 Ethernet port
(Expandable up to 2 x 10GbE + 4 x GbE)
Network Expansion Slot1 (PCIe Gen2 x 4)
LED IndicatorsStatus, USB, HDD 1-5
USB3 x USB 3.0 port (Front: 1, Rear: 2)
Support USB printer, pen drive and USB UPS etc.
ButtonsPower/Status, USB One-Touch-Backup, rest
Alarm BuzzerSystem warning
Form FactorTower
Dimensions185 (H) x 210.6 (W) x 235.4 (D) mm
7.28 (H) x 8.29 (W) x 9.27 (D) inch
WeightNet:4.4 kg (9.7 lbs)
Gross:5.8 kg (12.79 lbs)
Power Consumption (W)HDD standby: 17.01W
In operation: 29.31W
(with 5 x 1TB HDDs intalled)
Humidity5~95% RH non-condensing, wet bulb: 27˚C
Power SupplyATX 250W, 110-240V AC, 50-60Hz, 5A
Secure DesignKensington security slot for theft prevention
Fan1 x quiet cooling fan (12cm, 12V DC)
Software Specification
Operating SystemQTS 4.2 (embedded Linux)
Supported Client OSWindows 7 (32/64-bit), Windows 8 (32/64-bit), Windows Server 2003/2008 R2/2012/2012R2
Apple Mac OS X
Linux & UNIX
Supported BrowsersMicrosoft Internet Explorer 10+
Mozilla Firefox 8+
Apple Safari 4+
Google Chrome
Multilingual SupportChinese (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 SystemInternal Hard Drive: EXT4
External Hard Drive: EXT3, EXT4, NTFS, FAT32, HFS+
NetworkingTCP/IP (IPv4 & IPv6: Dual Stack)*
4 x Gigabit NICs with jumbo frame (failover, multi-IP settings, port trunking/NIC teaming)
Service binding based on network interfaces
Squid Proxy server
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
UPnP & Bonjour Discovery
USB Wi-Fi Adapter Support
- Not all services supports IPv6.
SecurityNetwork access protection with auto-blocking: SSH, Telnet, HTTP(S), FTP, CIFS/SMB, AFP
CIFS host access control for shared folders
FIPS 140-2 validated AES 256-bit volume-based and shared folder data encryption*
AES 256-bit external drive encryption*
Importable SSL certificates
Instant alert via E-mail, SMS, beep,and push service
2-step verification
- Data encryption functions may be unavailable in accordance with the legislative restrictions of some countries.
Storage ManagementQNAP flexible Volume/LUN with thin provisioning and space reclaim
RAID 0/1/5/6/10, + hot spare
Supports storage pools
Online volume expansion&storage pool expansion
Online RAID capacity expansion and online RAID level migration
SMART data migration
Storage expansion via max 2 QNAP UX-500P/UX-800P expansion units
JBOD enclosure roaming
SSD read-only/read-write cache
Bad block scan, recovery, and hard drive S.M.A.R.T.
RAID recovery
Bitmap support
Power ManagementWake on LAN
Internal hard drive standby mode
Scheduled power on/off
Automatic power on after power recovery
USB and network UPS support with SNMP management
Access Right ManagementBatch user 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 File Station
Subfolder permissions support for CIFS/SMB, AFP, FTP, and File Station
Domain Authentication IntegrationMicrosoft Active Directory (AD) & Domain Controller support
LDAP server, LDAP client
Domain users login via CIFS/SMB, AFP, FTP, and File Station
myQNAPcloud ServicePrivate cloud storage and sharing
Free host name registration (DDNS)
Supports myQNAPcloud SSL certificates (DDNS)
Auto router configuration (via UPnP)
Web-based file manager with HTTPS 2048-bit encryption
CloudLink for remote access without any complicated router setup
myQNAPcloud connect for easy VPN connection (Windows VPN utility)
QsyncSyncs files across multiple devices with SSL support
Selective synchronization for only syncing specific folders
Use team folders as a file center for greater team collaboration (maximum sync tasks:32)
Shares files by links via e-mail
Policy settings for conflicting files and file type filter support
Version control: up to 64 versions.
Incremental synchronization for HDD space saving
Unified privilege management
Unified configuration management
Supports central configuration mode
Supports remote erase / restore
Supports shared folders sync
Supports Windows & Mac OS
Web AdministrationMovable Icons and personalized desktop
Smart toolbar and dashboard for neat system status display
Smart fan Control
Dynamic DNS (DDNS)
Resource monitor
Network recycle bin for file deletion via CIFS/SMB, AFP, and File Station
- Automatic Cleanup
- File Type Filter
Comprehensive logs (events & connection)
Syslog client/server
System settings backup and restore
Restore to factory default
Mobile app: Qmanager for remote system monitoring & management
File ServerFile sharing across Windows, Mac, and Linux/UNIX
Windows ACL
Advanced folder permissions for CIFS/SMB, AFP, FTP
Shared folder aggregation (CIFS/SMB)
Powerful All-in-one server
FTP ServerFTP over SSL/TLS (Explicit)
FXP support
Passive ftp port range control
File StationSupports mounting a Cloud Drive (such as Google Drive, Dropbox, Microsoft OneDrive, Amazon Cloud Drive, Yandex Disk and Box).
Supports mounting remote shared folders through FTP, WebDAV or Microsoft networking (SMB/CIFS)
Supports opening documents via Office Online, Google Docs or Chrome Extension (Edit Office files in Google Docs, Sheets, and Slides)
Supports ISO Mounting (Up to 256 ISO Files)
Supports thumbnail display of multimedia files
Supports sharing download links and upload links
Supports sharing to other NAS users
Drag-n-drop Files via Chrome and Firefox Browsers
Photo, music, and video preview and playback
File Compression (ZIP or 7z)
Supports displaying subtitles (*.SRT, UTF-8 format)
Supports slideshow playback in media viewer
Mobile App: Qfile for file browsing and management
Backup StationRemote replication server (over rsync)
Real-time remote replication (RTRR) to another QNAP NAS or FTP server
Works as both RTRR server & client with bandwidth control
Real-time & scheduled backup
Backup versioning for RTRR
Snapshot support for RTRR/Rsync
Encryption, compression, file filter, and transfer rate limitation
Encrypted replication between QNAP NAS servers
Desktop backup with QNAP NetBak Replicator for Windows
Apple Time Machine backup support
Data backup to multiple external storage devices
Synchronizes with cloud storage: Amazon S3, ElephantDrive, Symform, Dropbox, and Google Drive
Third party backup software support: Acronis True Image, Arcserve backup, emc retrospect, Symantec Backup Exec, etc.
Container StationSupports LXC and Docker
Supports CPU/Memory management
Download applications from the built-in Docker Hub Registry
Supports one-click installation, container export/import & console mode
Supports mounting NAS shared folders and data-only containers Supports auto port forwarding
Supports auto-start containers
Supports downloading Docker certificates
Print ServerMax number of printers: 3
Supports Internet Printing Protocol
Print job display and management
IP-based and domain name-based privilege control
Photo StationShow photos by thumbnails, list, timeline, or folder view
Supports virtual/smart albums
Validity control for sharing albums
Tag photos with text, colors, and ratings
Slideshows with background music and different transition effects
Geotag photos and display them on Google maps
Advanced search by tags, metadata, etc
Supports uploading photos/videos to Picasa, Flickr, Weibo, YouTube
Share slideshows links to social websites or by email
Supports Facebook friends login
Backup/Restore album configuration
Music StationPlay or share music via web browser
Automatic classification via Media Library
Supported audio formats: AIFF, APE, FLAC, M4A, M4A Apple Lossless (ALAC), MP3, OggVorbis, WAV (PCM, LPCM),WMA, WMA PRO, WMA VBR*
Supports streaming music to multiple devices
Supports changing album covers via Google search or uploading photos
Internet radio (MP3)
Up to 8 music alarms
Mobile app: Qmusic for music streaming and management
* DRM-protected content is not supported.
iTunes ServerAudio and video sharing for Windows & Mac iTunes
Video StationSupports virtual/smart collections
Tag videos with text, color, and ratings
Share video links to social websites or through email
Sort videos automatically into defined classifications
Display movie posters from IMDB or user upload
Supports displaying subtitles (*.SRT,*.ASS, *.SSA)
Supports Facebook friends login
Supports custom video classification
Supports multi-zone video display
Mobile app: Qvideo for online video browsing and management
AirPlay & ChromecastStreams videos, photos and music from NAS to Apple TV or Chromecastvia File Station, Music Station, Photo Station, Video Station or mobile app (Qfile, Qmusic, Qphoto or Qvideo).
Note: Media Streaming add-on app from the App Center is required
Download StationPC-less BT, FTP/FTPS, and HTTP/HTTPS, Thunder, FlashGet and qqdl download (up to 500 Tasks)
BT download with Magnet Link and PT support
Scheduled download and bandwidth control
RSS subscription and download (broadcatching)
BT search
Proxy support for BT download
Mobile app: Qget for downloads browsing and management
Storage Plug & ConnectCreating and mapping shared folders by QNAP Windows Qfinder Pro
Creation of and connection to iSCSI target/LUN
iSCSI (IP SAN)iSCSI target with multi-LUNs per target (Up to 256 targets/LUNs combined)
Supports LUN mapping & masking
Online LUN capacity expansion
Support for SPC-3 persistent reservation
Supports MPIO & MC/S
iSCSI LUN backup, one-time snapshot, and restoration
iSCSI connection and management by QNAP Windows Qfinder Pro
Virtual disk drive (via iSCSI initiator)
Max No. of virtual disk drives: 8
Surveillance StationSupports over 3,000 IP cameras
Includes 2 free camera licenses, up to 30 camera channels via additional license purchase
Instant playback to check recent events
Online editing to edit cameras during live view
Visual aid by e-map
Playback and speed control using the shuttle bar
Video preview on playback timeline
Intelligent video analytics (IVA) for advanced video searching
Surveillance client for Mac
Mobile surveillance app: Vmobile (iOS and Android)
Mobile recording app: Vcam (iOS and Android)
VPN ServerSecure remote access: PPTP、L2TP/IPsec&OpenVPN VPN services
Max number of clients: 30
VPN ClientSupported VPN protocols: PPTP &OpenVPN services
PPTP Authentication: PAP, CHAP, MS-CHAP, MS-CHAPv2
PPTP Encryption: None, AES 40/128 bit, AES 256 bit
OpenVPN Encryption: None, AES 40/128 bit, AES 256 bit
Transmission package monitor
OpenVPN port control
OpenVPN link compression
DLNA ServerSupports DLNA/UPnP TVs and players such as PlayStation 4 and Xbox One
Supported audio formats: AIFF, APE, DSD (DSF, DFF), FLAC, M4A, M4A Apple Lossless (ALAC), MP3, OggVorbis, WAV (PCM, LPCM), WMA, WMA PRO, WMA VBR*
Support CUE indexing file for APE, FLAC audio format.
*DRM-protected content is not supported.
App CenterOfficial and community software add-ons such as Signage Station and Notes Station
New Group
Package ContentTS-531P x 1
Ethernet Cable x 2
Power Cord x 1
Quick Installation Guide (QIG) x 1
Flat head screw x 15 (for 2.5" HDD)
Flat head screw x 20 (for 3.5" HDD)
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