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.

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.

Specification

Product
Product id	731588
Brand	QNAP
Partnr	QVP-21A-04CH
EAN/UPC code	4713213518496
Warranty (months)	2-year warranty
Storage
Storage drives installed	N
Number of storage drives supported	2
Installed storage drive type	N
Supported storage drive types	HDD & SSD
Supported storage drive interfaces	Serial ATA II, Serial ATA III
Storage drive sizes supported	2.5, 3.5 "
RAID support	Y
RAID levels	0, 1, 5, 6, 10, JBOD
Online RAID migration	Y
Online RAID expansion	Y
Hot-swap drive bays	Y
Supported file systems	ext4
Processor
Processor manufacturer	Intel
Processor family	Intel Celeron
Processor model	J1900
Processor frequency	2 GHz
Processor boost frequency	2.42 GHz
Processor cores	4
CPU configuration (max)	1
Conflict-Free processor	Y
Memory
Internal memory type	DDR3L
Internal memory	8 GB
Maximum RAM supported	8 GB
Memory form factor	SO-DIMM
Memory slots	2
Flash memory	5000 MB
Network
Ethernet LAN	Y
Ethernet LAN data rates	1000 Mbit/s
DHCP server	Y
Wake-on-LAN ready	Y
Supported network protocols	HTTP, HTTPS, TCP/IP, UDP, DHCP, Static IP, DNS, DDNS, UPnP, FTP, NTP, and SMTP
Ports & interfaces
Ethernet LAN (RJ-45) ports	2
USB port	Y
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	3
HDMI ports quantity	1
HDMI version	1.4b
Design
Chassis type	Tower
Cooling type	Active
Product colour	Black
Number of fans	1 ventilator(en)
Fan diameter	70 mm
LED indicators	Power, Reset
Performance
Type	NAS
Device class	Small & Medium Business
Backup function	Y
Backup features	Cloud
Buzzer	Y
Noise level	19.4 dB
Web-based management	Y
USB copy function	Y
S. M. A. R. T. support	Y
Hot spare	Y
System log	Y
Reset button	Y
On/off switch	Y
Security algorithms	HTTPS, SSH
Power
Power supply location	Built-in
Power supply unit (PSU) capacity	90 W
Number of power supply units	1
Power consumption (typical)	16.34 W
Power consumption (sleep)	10.14 W
Power consumption (off)	0.74 W
AC input voltage	100-240 V
Weight & dimensions
Width	102 mm
Depth	216 mm
Height	150 mm
Weight	1470 g
Package weight	2920 g
Processor special features
Intel Virtualization Technology for Directed I/O (VT-d)	N
Intel Virtualization Technology (VT-x)	Y
Intel FDI Technology	N
Intel 64	Y
Graphics & IMC lithography	22 nm
Execute Disable Bit	Y
Enhanced Intel SpeedStep Technology	Y
Embedded options available	Y
Intel Identity Protection Technology version	0.00
Intel Stable Image Platform Program (SIPP) version	0.00
Intel Stable Image Platform Program (SIPP)	N
Intel Small Business Advantage (SBA) version	0.00
Intel Rapid Storage Technology	N
Packaging content
Cables included	AC, LAN (RJ-45)
Number of screws	14
Operational conditions
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	5 - 95 procent