Calculating Disk Space Required - Honeywell HDVR Reference Manual

Storage Setup

Calculating Disk Space Required

For timelapse:
For events:
For total timelapse
and events:
Rev 1.00
To determine how much disk space is required for storing timelapse and event data, use
the following two formulas and add the results together to get a total amount of disk space
needed.
Note The following calculations are for NTSC. For PAL, use the coefficient 1.49
instead of 1.26.
Total hours x Record rate (fps)
Image quality (compression)
In this example:
168 hrs x 5 fps
Image size x Record rate (fps) x number of seconds = Event disk space
Event space x number of events per day x number of days = Total events disk space
In this example:
1
17,500 x 3 fps x 5 secs = 262,500 bytes
262,500 x 500 x 7 = 918,750,000 (or approximately 1 GB)
Timelapse disk space + total events disk space = Total disk space
In this example:
53 GB + 1 GB = approximately 54 GB
for one week (168 hours) of timelapse and events recording.
1
one field is approximately 350 Kbps. Therefore, the stored image size is
field/compression = 350 K/20 = 17,500.
x 1.26 = Timelapse disk space
x 1.26 = 52.92 (approximately 53 GB)
20
50 Document 900.0261
04/05