Unisight M4Core D-Seres Manuel d'utilisateur Page 151

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 156
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 150
Digital Network Video Surveillance System
Appendix A HDD Capacity Calculation
Calculate total capacity needed by each DVR according to video recording (video recording type and video
file storage time).
Step 1: According to Formula (1) to calculate storage capacity
i
q
that is the capacity of each channel
needed for each hour, unit Mbyte.
102436008
ii
dq
(1)
In the formula:
i
d
means the bit rate, unit Kbit/s
Step 2: After video time requirement is confirmed, according to Formula (2) to calculate the storage
capacity
, which is storage of each channel needed unit Mbyte.
=
i
q
×
i
h
×
(2)
In the formula:
i
h
means the recording time for each day (hour)
means number of days for which the video shall be kept
Step 3: According to Formula (3) to calculate total capacity (accumulation)
that is needed for all
channels in the DVR during scheduled video recording.
c
i
iT
mq
1
(3)
In the formula:
c
means total number of channels in one DVR
Step 4: According to Formula (4) to calculate total capacity (accumulation)
that is needed for all
channels in DVR during alarm video recording (including motion detection).
c
i
iT
mq
1
×a% (4)
In the formulaa% means alarm occurrence rate
Unisight Digital Technologies, Inc.
151
Vue de la page 150

Commentaires sur ces manuels

Pas de commentaire