Axis Network video Spécifications Page 110
- Page / 120
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
110
A helpful tool in estimating requirements for bandwidth and storage is the AXIS Design Tool, which
is accessible from the following web address: www.axis.com/products/video/design_tool/
Figure 12.1a The AXIS Design Tool includes advanced project management functionality that enables bandwidth
and storage to be calculated for a large and complex system.
12.2 Server-based storage
Depending on a PC server’s central processing unit (CPU), network card and internal RAM
(Random Access Memory), a server can handle a certain number of cameras, frames per second
and size of images. Most PCs can hold between two and four hard disks, and each disk can be up
to approx. 300 gigabyte (GB). In a small to medium-sized installation, the PC that runs the video
management software is also used for video recording. This is called a direct-attached storage.
With the AXIS Camera Station video management software, for instance, one hard disk is suit-
able for storing recordings from six to eight cameras. With more than 12 to 15 cameras, at least
two hard disks should be used to split the load. For 50 or more cameras, the use of a second
server is recommended.
12.3 NAS and SAN
When the amount of stored data and management requirements exceed the limitations of a
direct-attached storage, a network-attached storage (NAS) or storage area network (SAN)
allows for increased storage space, exibility and recoverability.
CHAPTER 12 - BANDWIDTH AND STORAGE CONSIDERATIONS
- Table of contents 3
- Network technologies 69 5
- Wireless technologies 87 5
- Video management systems 91 5
- TABLE OF CONTENTS 5
- 1.2 Benets 8
- 1.3 Applications 12
- 1.3.4 Industrial 13
- 1.3.5 City surveillance 13
- 1.3.6 Government 13
- 1.3.7 Healthcare 13
- 1.3.8 Banking and nance 14
- Network cameras 15
- 2.2 Types of network cameras 16
- 2.2.1 Fixed network cameras 17
- 700 nm to 1000 nm range 22
- Camera elements 27
- 3.2 Lens elements 28
- 3.2.3 Lens mount standards 31
- 3.2.4 F-number and exposure 31
- 3.2.6 Depth of eld 33
- 3.3 Image sensors 34
- 3.3.3 Megapixel sensors 35
- 3.4.1 Interlaced scanning 35
- 3.4.2 Progressive scanning 36
- 3.5 Image processing 37
- 4.2 Transparent covering 40
- 4.4 Environmental protection 41
- 4.5.2 Mounting 42
- 4.6 Types of mounting 43
- 4.6.2 Wall mounts 44
- 4.6.3 Pole mounts 44
- 4.6.4 Parapet mounts 44
- 5.1 What is a video encoder? 45
- 5.5 Deinterlacing techniques 49
- 5.6 Video decoder 50
- Resolutions 51
- 6.2 VGA resolutions 52
- 6.3 Megapixel resolutions 53
- Video compression 55
- Earlier reference frame 57
- 7.2 Compression formats 59
- 7.2.2 MPEG-4 60
- 7.4 Comparing standards 61
- CHAPTER 7 - VIDEO COMPRESSION 62
- 8.1 Audio applications 63
- AUDIO Stream 64
- VIDEO Stream 64
- Recording/monitoring 64
- 8.3.1 Simplex 65
- 8.4 Audio detection alarm 66
- 8.5 Audio compression 66
- 8.5.1 Sampling frequency 67
- 8.5.2 Bit rate 67
- 8.5.3 Audio codecs 67
- Network technologies 69
- 9.1.2. Switch 71
- 9.1.3 Power over Ethernet 73
- 9.2 The Internet 75
- 9.2.1 IP addressing 76
- 9.2.1.1 IPv4 addresses 76
- 9.2.1.2 IPv6 addresses 80
- 9.3 VLANs 82
- 9.4 Quality of Service 82
- FTP 2 83
- Video 5 83
- HTTP 3 83
- 9.5 Network Security 84
- 9.5.4 HTTPS or SSL/TLS 85
- VPN tunnel 86
- HTTPS or SSL/TLS encryption 86
- Secure Non-secure 86
- Wireless technologies 87
- 10.1 802.11 WLAN standards 88
- 10.2 WLAN security 88
- 10.3 Wireless bridges 89
- Video management systems 91
- 11.1.2 NVR platform 92
- 11.2 Software platforms 93
- 11.3 System features 94
- 11.3.1 Viewing 95
- 11.3.2 Multi-streaming 95
- 11.3.3 Video recording 96
- 11.3.4 Recording and storage 97
- 11.3.7 Security 103
- 11.4 Integrated systems 104
- 11.4.3 Access control 105
- 11.4.4 Building management 105
- 11.4.6 RFID 106
- Table 12.1b 109
- Table 12.1c 109
- 12.2 Server-based storage 110
- 12.3 NAS and SAN 110
- 12.4 Redundant storage 112
- 12.5 System congurations 113
- Surveillance 114
- IP NETWORK 114
- Tools and resources 115
- Axis Communications’ Academy 117
- Contact information 118
- About Axis Communications 120
Produits connexes et manuels pour Mise en réseau Axis Network video
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