QNAP QVP-21A NAS/storage server Tower Ethernet LAN Black J1900
Stock code: QVP-21A | Quick code: 102897

QNAP QVP-21A NAS/storage server Tower Ethernet LAN Black J1900


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The QVP-21A QVR Pro appliance is a tower-based network surveillance server that supports real-time video/audio monitoring, high-resolution recording, and playback from multiple IP cameras. Users can easily monitor cameras from different platforms (Windows, Mac and mobile devices), making it easier for businesses, offices, and home users to safeguard their property and possessions.

QVP-21A vs. other NAS-based surveillance systems. What’s the difference?
In a conventional NAS-based surveillance system, surveillance is just one of many applications available to users. As all these applications need to share NAS system resources and storage space, surveillance performance could be impacted. The QVP-21A QVR Pro Appliance overcomes this by providing dedicated storage space and reserving full system resources for surveillance, delivering the utmost performance to fulfill professional surveillance system requirements. The QVP-21A also comes with built-in camera channel licenses and essential applications to enable local installation without requiring an internet connection. Simply install the hard drives and power up the QVP-21A to start the installation process.

Comprehensive camera support and management
The QVP-21A supports thousands of camera models from over 150 brands with a variety of image formats (including cameras that use ONVIF and RTSP/ HTTP streaming). Even USB webcams are supported, allowing home and budget-conscious users to quickly build surveillance solutions tailored to their environment while providing convenient camera management.

Motion detection using budget-friendly USB webcams
Standard surveillance systems normally only support event recording and notification functions for expensive cameras with integrated motion detection. The QVP-21A provides motion detection even for entry-level cameras and USB webcams. As long as your camera can stream its footage to the QVR Pro appliance (e.g. through RTSP protocol) it supports motion detection, allowing you to build a budget-friendly, motion-detecting surveillance system.

QVR Pro Client
The QVR Pro Client software can be installed on Windows® and Mac® devices, allowing you to monitor from different platforms and flexibly switch from live view or playback mode to take full control over monitored areas.

Live view and playback
Monitor the live view of multiple channels and play recordings on a single interface. You can also view recordings at a specific time by clicking the timeline or by defining a time range.

Region of Interest
The Region of Interest (ROI) feature allows for viewing multiple regional images from the same camera in live view and playback mode. You can define and enlarge multiple areas to watch the area more closely.

Qdewarp Technology
The innovative Qdewarp enables users to view standard fisheye camera recordings in proportional ratios and sizes without affecting original recordings. The distorted parts on the edges can be turned into a clear panoramic view.

Multiple Notification Methods
The event notification provides multiple ways of being informed of emerging events, including flashing red borders of channels, alert buzzers, and the motion icon on the e-map.

Easy remote monitoring with the QVR Pro Client mobile app
The QVR Pro Client mobile app allows you to remotely monitor multiple channels simultaneously. If your network connection is slow or metered/capped, you can choose the low-bandwidth mode to view a bandwidth-optimized stream without affecting the quality of recordings. In addition, you can remotely set the camera’s preset point or control the PTZ cameras within the app.

Online RAID migration Yes
Online RAID expansion Yes
Storage drives installed No
Installed drive type No
Supported storage drive types HDD & SSD
Number of storage drives supported 2
Hot-swap drive bays Yes
RAID support Yes
Supported file systems ext4
RAID levels 1,5,6,10,JBOD
Supported storage drive interfaces Serial ATA II, Serial ATA III
Storage drive sizes supported 2.5,3.5″
Processor manufacturer Intel
Processor boost frequency 2.42 GHz
CPU configuration (max) 1
Conflict-Free processor Yes
Processor frequency 2 GHz
Processor family Intel® Celeron®
Processor model J1900
Processor cores 4
Internal memory type DDR3L
Internal memory 8 GB
Maximum RAM supported 8 GB
Memory slots 2
Flash memory 5000 MB
Memory form factor SO-DIMM
Ethernet LAN Yes
Ethernet LAN data rates 1000 Mbit/s
Wake-on-LAN ready Yes
Supported network protocols HTTP, HTTPS, TCP/IP, UDP, DHCP, Static IP, DNS, DDNS, UPnP, FTP, NTP, and SMTP
DHCP server Yes
Ports & interfaces
USB port Yes
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 3
HDMI version 2.0
Audio in/out Yes
HDMI ports quantity 1
Ethernet LAN (RJ-45) ports 2
Hard drive
RAID support Yes
Supported file systems ext4
RAID levels 1,5,6,10,JBOD
Cooling type Active
Fan diameter 7 cm
Product colour Black
Number of fans 1 fan(s)
LED indicators HDD, LAN, Status, USB
Chassis type Tower
Technical details
Type NAS
Device class Small & Medium Business
Backup function Yes
Backup features Cloud
Product colour Black
Noise level 19.4 dB
LED indicators HDD, LAN, Status, USB
Chassis type Tower
Buzzer Yes
Number of fans 1 fan(s)
System log Yes
S.M.A.R.T. support Yes
Hot spare Yes
Type NAS
Device class Small & Medium Business
Backup function Yes
Backup features Cloud
On/off switch Yes
Web-based management Yes
Security algorithms HTTPS,SSH
Reset button Yes
Noise level 19.4 dB
Buzzer Yes
USB copy function Yes
Cooling type Active
Fan diameter 7 cm
Number of fans 1 fan(s)
Security algorithms HTTPS,SSH
Management features
On/off switch Yes
Web-based management Yes
Reset button Yes
Power supply location Built-in
Power supply unit (PSU) capacity 90 W
Power consumption (off) 0.74 W
AC input voltage 100-240 V
Power consumption (typical) 16.34 W
Power consumption (sleep) 10.14 W
Number of power supply units 1
Weight & dimensions
Width 102 mm
Depth 216 mm
Height 150 mm
Weight 1.47 kg
Package weight 2.92 kg
Packaging content
Number of screws 14
Cables included AC, LAN (RJ-45)
Processor special features
Intel Virtualization Technology for Directed I/O (VT-d) No
Intel Virtualization Technology (VT-x) Yes
Intel Stable Image Platform Program (SIPP) version 0.00
Intel Stable Image Platform Program (SIPP) No
Intel Small Business Advantage (SBA) version 0.00
Intel Rapid Storage Technology No
Intel Identity Protection Technology version 0.00
Intel FDI Technology No
Intel 64 Yes
Graphics & IMC lithography 22 nm
Execute Disable Bit Yes
Enhanced Intel SpeedStep Technology Yes
Embedded options available Yes
Operational conditions
Operating temperature (T-T) 0 – 40 °C
Operating relative humidity (H-H) 5 – 95%
Packaging data
Package weight 2.92 kg
Cables included AC, LAN (RJ-45)

Key features

  • Intel J1900
  • 8 GB DDR3L
  • 5 GB
  • 2x 3.5"
  • USB 3.2
  • HDMI
  • 150×102×216 mm

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020 82 888 555