Q: 1, what’s the
main way to achieve video surveillance storage system?
A: With the rapid
development of network in recent years, security surveillance moved rapidly
from traditional analog system to HD digital, network intelligent. Also, the monitoring
video storage recorder evolved gradually from traditional analog DVR to H-DVR
with modulus mixed, and to current NVR (Network Video Recorder). Network
storage NVR inherits the traditional advantages of analog DVR - friendly
interface, easy to backup data, supports local queries, enables video
monitoring channels expanded and unified management, convenient operation and
maintenance, etc. These characteristics are welcomed by the majority of users.
 |
| Concentrated Storage |
 |
| Distributed Storage |
There are types
of layout and ways for storage: mainly NVR storage and IP-SAN storage.
Seen from the
image of concentrated storage, NVR supports certain size of centralized
storage. Users can take low-cost advantages of IP network; discover police
intelligence quickly via convenient NVR video playback and improve response
time. It is convenient to expand monitoring scale. NVR storage
architecture also supports later
online storage expansion.
The embedded NVR has significantly lowered construction
costs. As the market of hard drivers gets complicated and diverse, it is more efficient to reduce early
construction costs by improving NVR technology to support the use of low-cost
hard disk. The functions of centralized configuration, upgrade and intelligent
diagnosis providing by entire system also greatly reduces maintenance costs. Both
distributed storage and centralized storage are nearly the same and also fully
able to meet the system’s unified management.
 |
| IP-SAN storage |
It is more
common to opt for IP-SAN centralized storage in HD data center. SAN (Storage
Area Network) is based on storage structure of fiber channel or IP standard. IP
camera, media data and data visiting must pass through the server, and then
visit the related storage device via bus. The middle server takes the role of
store and forward. With the birth of high speed hard disk, the read-write
performance of SAN data increased much. Advanced IP networking
technology reduces the configuration of SAN
storage device, the
complexity of the maintenance. The entire system supports cross-platform
data sharing and adding storage devices at any time without
capacity limitation. Along with the development of
IPv6 and 100Gbps
Ethernet, IP-SAN's performance will go to a higher level.
IP-SAN is the storage
system based on IP network. With the
price of traditional Ethernet fiber to meet the cost to fiber transmission,
IP-SAN realizes real plug and play without client hardware and software
upgrades. It has near-zero maintenance costs, reduces project cost of
ownership and maintenance.
Q: 2. what is the state of the HD storage
technology?
A: In medium-sized high-definition storage project, NVR storage
method is the leading direction, easy to operate and maintain when customer-oriented,
low cost, relatively low storage requirements for applications. As the
superiority of particular application, IP-SAN is still the main storage mode
for big data, high capacity and high data requirements applications.
Q: 3. what is the core technology of HD storage?
A:
Take Onvif and GB/T28181, etc. international standards access protocols,
and high efficient storage read-write, retrieval management, leading encoding,
transcoding, streaming distribution technology
as the core.
Q: 4. at the high-definition era, what are the challenges of storage facing?
A:
As the advent of high-definition era, from the original
analogue of 100,000
pixels, to current
2.0MP, 3.0MP or even higher 5.0MP acquisition unit, the
human’s eyes demand higher for the video quality. Compared DVR storage devices
at the analog era, HD digital storage device NVR and IP-SAN get more demands. Security
monitoring usually requires 30~90 days for storage, or longer at some important
place. There needs higher stability and reliability for network environment,
bandwidth, HD storage devices.
Q: 5. at the high-definition era, how to solve problem of storage
capacity and bandwidth?
A:
Storage plays an important role at the HD era. To solve problem of storage
capacity and bandwidth, the best way is to reduce the stream of HD front-end
equipment and accelerate the development of Ethernet. At present, there are some companies to improve the
encoding mode of HD digital signal. A few years ago, there were also
manufacturers initiated H.265 encoding format. The HD stream needs get a
certain decline with the equal image quality between H.265 and H.264.
Q: 6. what are the
new technologies and new applications for HD storage?
A:
At HD era, storage will be wider further on digitization. Intelligent and big data applications combined,
can dig and analyze video data recorded, and become the
ready-to-use wealth of data. The H.265 encoding technology can
reduce bitrates further under the same clarity, as well as reduce storage space
occupied.
Q: 7. what is the future trend of
HD storage?
A:
One is the application of intelligent storage. Collected HD data can be
searched and analyzed by keywords such as varied scene, number of people. Store
effective high-definition data aimed at
critical information. Another is standardization. HD storage supports various
domestic and international standard access protocols, and also support plug
& play further, without secondary development.
Q: 8. what’s the
impact that cloud storage brings to HD storage?
A:
Cloud storage solution is a
product of cloud computing
technology. Cloud storage can be centrally managed,
reduce maintenance costs and visit via
remote access. But because of cyber attacks,
hackers and other factors, there likely leads to leaks of
high-definition data. Also, the security
and reliability of network HD signals exists some
problems.
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