Videoswitch Vi-R4000 Series - Manual (Page 28)

Vi-R4000 Series
Videoswitch Page 22 Mdr602a.doc
3.4.7 Retention Period
The displayed retention period is very much the worst case and assumes the maximum bit-rate on all
cameras at all times and also assumes that event recording is occurring all the time.
3.4.8 Retention Period Tables
The time period for which video recording is retained for before being over-written depends on these
factors:
• Hard drive capacity (1 to 8 Tbyte)
• Frame rate (1 to 25)
• Quality setting (Highest, higher, medium, low, lower, lowest)
• Resolution (4CIF, 2CIF)
• Number of cameras (1 to 16)
• Complexity and movement in each camera view
The tables below give a guide to how many days retention to expect, assuming recommended max bit
rates, continuous recording and the same settings on all cameras. The exact retention period achieved
may differ according to how complex the images are that the cameras are looking at and how much
movement there is.
Depending on how many cameras you have and what hard drive capacity is available, you can see the
trade off between resolution, quality, frame-rate and retention period.