QNAP TS-853BU 8-Bay NAS Enclosure

QNAP TS-853BU 8-Bay NAS Enclosure
Key Features
  • 8 x 3.5"/2.5" SATA III 6 Gb/s Drive Bays
  • 1.5 GHz Intel Celeron J3455 Quad-Core
  • 4GB of DDR3L RAM
  • 4 x Gigabit Ethernet Ports
Show More
The TS-853BU 8-Bay NAS Enclosure from QNAP is a 2 RU rackmount NAS that fits in 19" racks, providing a storage solution in server rooms for small and medium businesses. It is equipped with a PCIe Gen 2.0 x2 slot that can accommodate a QNAP QM2 expansion card for adding an M.2 SSD cache/10GbE Ethernet card, a Wi-Fi card to create a wireless access point, or a 10 Gb/s USB 3.1 card for helping to simplify backups to/from multiple external sources. Also provided is 4K video playback and real-time transcoding, deployment of virtual environments through Virtualization Station and Container Station, centralized management of remote Windows, Linux, and IPMI-compatible devices with QRM+, and web automation services with IFTTT Agent.
No Longer Available
Protect your Gear
Add a protection plan from $77.99
Marco V., B&H Computer Expert

True Know-How

Ask Our Experts


QNAP TS-853BU Overview

The TS-853BU 8-Bay NAS Enclosure from QNAP is a 2 RU rackmount NAS that fits in 19" racks, providing a storage solution in server rooms for small and medium businesses. It is equipped with a PCIe Gen 2.0 x2 slot that can accommodate a QNAP QM2 expansion card for adding an M.2 SSD cache/10GbE Ethernet card, a Wi-Fi card to create a wireless access point, or a 10 Gb/s USB 3.1 card for helping to simplify backups to/from multiple external sources. Also provided is 4K video playback and real-time transcoding, deployment of virtual environments through Virtualization Station and Container Station, centralized management of remote Windows, Linux, and IPMI-compatible devices with QRM+, and web automation services with IFTTT Agent.

The TS-853BU is powered by a 1.5 GHz Intel Celeron J3455 Quad-Core processor, which will allow you to run multiple applications simultaneously and features a max boost speed of up to 2.3 GHz. The 4GB of DDR3L RAM has a configuration of 2 x 2GB and will allow quick access to frequently used files and programs. Network connectivity is achieved using the four Gigabit Ethernet ports which support failover, multi-IP settings, and port trunking/NIC teaming. There is also support for JBOD, single disk, and a variety of RAID modes, including RAID 0, 1, 5, 6, and 10, and 5/6/10+hot spare, each of which offers data redundancy, speed, or a combination of both.

This 8-bay enclosure has the ability to natively house both 3.5" and 2.5" SATA III hard drives or SSD drives, and screws are included that accommodate each drive size. With all four Gigabit Ethernet ports in use, the TS-853BU can deliver sequential read speeds of up to 405 MB/s and sequential write speeds of up to 431 MB/s. When using all four Gigabit Ethernet ports with volume encryption, which helps to prevent sensitive business data from unauthorized access and breaches, read speeds top out at 408 MB/s and write speeds reach 333 MB/s. Using the four external USB 3.0 Type-A ports, this QNAP NAS can be connected to other devices, such as QNAP expansion units.

QNAP's TS-853BU 8-Bay NAS Enclosure operates using a 250W ATX power supply. Included are two Ethernet cables, a power cord, 3.5" HDD flat head screws, and 2.5" HDD flat head screws. Protection is provided by a limited 2-year warranty.

General Features

1.5 GHz Intel Celeron J3455 Quad-Core CPU with AES-NI Encryption

Powered by a 1.5 GHz Intel Celeron J3455 Quad-Core processor (burst up to 2.3 GHz), 4GB of DDR3L RAM, four Gigabit LAN ports, and a SATA III 6 Gb/s drive interface, the TS-853BU runs tasks smoothly and quickly with read speeds of up to 405 MB/s and write speeds of up to 431 MB/s. The TS-853BU features Intel AES-NI accelerated encryption to drive transfer speeds of up to 408 MB/s with AES 256-bit encryption for both full NAS volumes and shared folders, boosting system performance while ensuring the confidentiality of sensitive business data stored in the NAS.

Extend NAS Functionality with PCIe Expansion

The TS-853BU has a PCIe expansion slot, providing flexibility in extending NAS functionality and potential applications. Install a QNAP QM2 card to provide M.2 SSD caching/10GbE connectivity, use the TS-853BU as a wireless access point by installing a compatible wireless network card, or boost the USB connectivity of the TS-853BU by installing a 10 Gb/s USB 3.1 card.

QM2 Expansion Card

QNAP's QM2 is a PCIe expansion card that features dual M.2 SSD slots and 10GbE connectivity (individual cards may vary in functionality). This allows users to set up SSD caching or to enable Qtier auto-tiering technology to optimize NAS performance. 10GbE-compatible models can also future proof the TS-853BU for use with 10GbE networks. Equipped with a dedicated cooling module, the QM2 can maintain its high performance even when tasked with the high workloads.

SSD Cache Acceleration

The TS-853BU supports SSD caching. Users can install an SSD in drive bays 1 and 2 to boost IOPS performance of storage volumes. It is well-suited for improving the overall workflow of IOPS-demanding applications and allows the best of both cost and performance by combining SSDs with HDDs. Coupled with Qtier auto-tiering technology (which now supports "On Demand Allocation Priority"), users can customize storage allocation to better suit their system environment and application demands.


QRM+ is QNAP's Centralized Management Solution, designed for IT teams and networked computing devices. It provides a single-point solution to discover, map, monitor, and manage all of the critical computing devices (including servers, PCs, and thin clients) in your network, and facilitates device discovery with the graphical topology diagram. QRM+ supports IPMI 2.0, provides remote KVM (Keyboard, Video, Mouse) for certain IPMI devices, and supports tracking every action using KVM recording and playback. Simply install QRMAgent on your Windows and Linux devices and you will see their system status on the QRM+ management interface. With centralized management using QRM+ on the NAS, IT infrastructure and device security is enhanced while troubleshooting and network resource performance analysis is simplified.

Data Backup, Recovery, and Synchronization

Hybrid Backup Sync provides a well-rounded solution for data backup, file synchronization, and disaster recovery for you to securely back up data from your NAS to several local, remote, and cloud storage spaces. In the event of system crashes or a critical hardware failure, you can restore data from these storage spaces, minimizing downtime and reducing overall loss. Hybrid Backup Sync also takes advantage of cloud storage for one-way sync of your data to cloud storage through RTRR, rsync, FTP, SMB protocol, or two-way sync your NAS with remote NAS/cloud services.

QTS-Linux Dual Systems, Geared for the IoT Era

The TS-853BU's QTS-Linux dual systems are based on QNAP's advanced virtualization technologies. The architecture of the TS-853BU enables users not only to download rich apps from the QTS App Center, but also to develop or utilize IoT packages for Linux and display them using HDMI output. With the TS-853BU, you can develop and install various IoT packages on-demand and centrally store the data on the TS-853BU, benefiting from a secure private storage and development solution.

Datastore for Virtualized Environments

The TS-853BU is an iSCSI/IP-SAN storage that supports VMware and Citrix, and is compatible with Microsoft Hyper-V and Windows Server 2012 R2, fulfilling the need for flexible deployment and management in virtualization environments. The TS-853BU supports VMware VAAI and Microsoft ODX to increase performance by offloading server loading for ESXi server and Hyper-V respectively, and supports QNAP vSphere Client plug-in and QNAP SMI-S provider with enhanced operational efficiency and management in virtualization applications.

Virtualization Station

Virtualization Station allows you to host virtual machines (VM) on the TS-853BU and access them via a web browser or VNC. Virtualization Station supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, and Device Management for centrally managing VMs. Virtualization Station allows the TS-853BU, VMs, and containers to share the same LAN port. No longer constrained by physical network performance, high-speed virtual switches increase data transfers between VMs, containers, and NAS through the internal interface. The TS-853BU also features Container Station, which integrates LXC and Docker lightweight virtualization technologies. You can operate multiple isolated Linux systems on the TS-853BU as well as download apps from the built-in Docker Hub Registry. Containers Station also supports the QIoT Containers platform that helps structure your IoT environment and deployment on your private IoT cloud.

VPN & Proxy Server

This combines VPN server and VPN client functionality. Through QVPN, the TS-853BU can be used as a VPN server with L2TP/IPsec, OpenVPN, and PPTP support, allowing you to securely access data shared within the private local network. The TS-853BU can also be used as a VPN Client to connect to other VPN servers or virtual private network through PPTP and OpenVPN for secure data transmission. VPN Client also allows your NAS to connect to multiple servers at the same time. You can connect your devices to your NAS and the VPN server at home to access data on the LAN and via VPN Client on your NAS, you can connect to international VPN servers for accessing regionally-restricted services such as Netflix and Hulu in HD Station. The TS-853BU provides you with various VPN options and helps secure your data transmission.

QTS Operating System

With modularized multiple applications and functions, QTS enhances management efficiency, personal productivity, multimedia, and much more. Intelligent agent services have also been added to simplify system operations and management. The user-friendly QTS features an intelligent desktop that allows you to find desired functions quickly, monitor important system information on a real-time basis, open multiple application windows to run multiple tasks concurrently with greater working efficiency, and provides a built-in App Center with install-on-demand apps to extend NAS functionality.

Qfiling Automates Your File Organization

Qfiling helps automate file organization for sorting files spread through multiple folders, helping to reduce the time needed for finding important files. Users can categorize files and determine filing conditions, and schedule filing tasks to be carried out periodically. The "Recipe" feature allows users to save frequently-used filing conditions as an "exclusive recipe," then the next Qfiling task can be run with just one click using the recipe.

4K HDMI Output

Featuring 9th Generation Intel HD Graphics, the TS-853BU supports dual-channel 4K H.264/H.265 hardware decoding and real-time transcoding, allowing you to convert videos to universal file formats that can be smoothly played on multiple devices. QNAP Linux Station is integrated with Ubuntu OS, allowing you to download and install versatile multimedia apps from Ubuntu Software Center, such as Plex Media Server, KMPlayer, LibreOffice, and VLC. QNAP's HD Station also allows you to enjoy multimedia using HD Player or third-party players such as Plex Home Theater. By connecting the TS-853BU to a HDTV or A/V receiver, you can enjoy watching videos with up to 4K resolution.

IFTTT Agent Automates Your Workflow

With QNAP's IFTTT (If This Then That) Agent, you can create a near-unlimited number of NAS-related applets on the IFTTT website for greater automation and to boost your productivity. For example, if you set a trigger as "Any new photo (using Android Photos service)" and the action as "Download the URL to QNAP NAS (using QNAP service)," then all the photos taken using your Android device will be automatically downloaded to TS-853BU. With IFTTT Agent, you can make your TS-853BU smarter than ever.

Centralized Email and Contact Management for Improved Communication Workflows

It can be hard to manage emails and contact information that are scattered across multiple computers, devices, and accounts - not to mention if important emails or contact information are lost or become inaccessible due to account closure or device malfunction/loss. QNAP QmailAgent and Qcontactz helps you centrally store and manage emails and contact information, making them accessible to your devices. And with the Qsirch search engine, you can find specific contacts and emails.

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 3000 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 the monitored channels anytime and anywhere, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-853BU. The TS-853BU offers 4 free IP camera channels and you can expand up to 40 channels by purchasing additional licenses.

QVR Pro Surveillance Solution

The TS-853BU supports QVR Pro (Beta) that integrates QNAP's professional QVR system into the QTS operating system. You can arrange a dedicated, independent storage space for surveillance data on the NAS and leverage the advantages of scalability and storage manageability from QTS. QVR Pro features a flexible monitoring interface that allows adjusting the proportion and monitor view of IP cameras, supports an upgraded timeline feature that provides instant video search and quick view identification in live monitoring mode, and allows for monitoring views and playing back images without switching between windows. Additional functions like batch adding and editing cameras and searching for cameras across different LANs further save the cost and time in deploying and maintaining a complete surveillance system. With the QUSBCam2 App, you can use a USB camera as an ONVIF network camera. Simply connect it to your TS-853BU and you can view real-time images without installing any software. Through QVR Pro, you can even store recordings for playback, allowing you to build a cost-effective surveillance system.

Expand Storage Capacity

Besides attaching a QNAP expansion enclosure, the TS-853BU's storage capacity can also be increased by using VJBOD. With VJBOD, the storage capacity of other QNAP NAS can be used as virtual disks that can be mounted as local disks on the TS-853BU for shares, applications, or even creating another LUN. You can use the QTS Storage Manager to handle NAS capacity expansion and storage expansion enclosure management. With the support of QJBOD Express (JBOD enclosures roaming), you can migrate data to another QNAP NAS through a JBOD enclosure without network connectivity.

When the TS-853BU is paired with one UX-1200U-RP Expansion Enclosure, users will have access to up to 20 total drives, combining the NAS and the expansion enclosure. For those who don't need as much additional storage, the UX-800U-RP supports up to 16 drives.

QNAP TS-853BU Specs

Number of Bays8 x 2.5"/3.5"
Media Card SlotsNone
Connections1 x HDMI Type-A (HDMI 1.4b)
4 x USB Type-A (USB 3.1 / USB 3.2 Gen 1 (5 Gb/s))
4 x RJ45 (Gigabit Ethernet)
Compatible Drive InterfaceSATA III
Form FactorRackmount (2 RU)
Hot-Swap SupportYes
Expansion Slots1 x PCIe 2.0 x2
Total Raw CapacityNone
Flash Memory4 GB eMMC
ProcessorIntel Celeron J3455 Quad-Core
Clock SpeedBase: 1.5 GHz
Total Installed Memory4 GB DDR3L
User-Replaceable Memory2 x 2 GB
Total Memory Slots2 x SO-DIMM
Maximum Memory Capacity8 GB
Supported ProtocolsAFP
iSCSI Target256
Installed Operating SystemQTS 4.3
File System Formats SupportedExternal: EXT3, EXT4, FAT32, HFS+, NTFS, exFAT
Internal: EXT4
Supported BrowsersChrome, Firefox, Internet Explorer, Safari
Supported LanguagesBrazilian Portuguese
Simplified Chinese
Traditional Chinese
Power Consumption52.1 W (Typical)
30.9 W (Standby)
Power SourceInternal Power Supply
PSU Wattage1 x 250 W
Encryption256-Bit AES, FIPS 140-2 Level 1
VPN Server Connections100
Operating Temperature32 to 104°F / 0 to 40°C
Operating Humidity0 to 95%
Cooling2 x 70 mm Fans
Noise Level28.2 dBA
Audible AlarmYes
Status MonitoringLED Indicator, OLED Screen
Dimensions3.5 x 19 x 21" / 88.9 x 482.1 x 533.9 mm
Weight23.9 lb / 10.8 kg
Packaging Info
Package Weight28.55 lb
Box Dimensions (LxWxH)27.7 x 22 x 11"
See any errors on this page? Let us know