Introduction
5
1
1.4 Installing GV-VMS
Before You Start
For optimal performance of your system, it is important to follow these recommendations
before installing the GV-VMS:
It is highly recommended to use separate hard disks; one for installing Windows OS and
GV-VMS, while the other for storing recorded files and system logs.
When formatting the hard disks, select NTFS as the file system.
When GV-VMS is running, it is not recommended to perform disk defragmentation at the
same time.
Since the size of transmitted data from IP cameras may be quite large and reach
beyond the transfer rate of a hard disk, you should note the total of recording frame
rates that you can assign to a single hard disk when single-stream (Main or Sub stream)
recording is applied, as listed below:
Frame rate limit in a single hard disk with single-stream recording applied
H.264 H.265
Video Resolution Frame Rate
(fps)
Bitrate
(Mbps)
Frame Rate
(fps)
Bitrate
(Mbps)
1.3 MP (1280 x 1024) 660 5.05 N/A N/A
2 MP (1920 x 1080) 660 7.01 N/A N/A
3 MP (2048 x 1536) 440 10.48 660 5.35
4 MP (2048 x 1944) 330 11.65 550 7.74
5 MP (2560 x 1920) 220 16.48 660 6.73
8 MP (3840 x 2120) 550 14.13 N/A N/A
12 MP (4000 x 3000) 330 14.47 N/A N/A
Note: The data above was determined using the bitrate listed above, hard disks with
average R/W speed above 110 MB/s, and with single-stream recording (Main or Sub
stream) recording is applied.
Recording Main and Sub streams together will require significantly more hard drive space
than single-stream recording. When single- stream (either Main or Sub stream) recording is
applied, up to 22 channels can be assigned to one hard disk. But when dual-stream (Main
and Sub streams) recording is enabled, only up to 11 channels can be recorded to one hard
disk.
The frame rate limit is based on the resolution of video sources. The higher the resolutions,
the lower frame rates you can assign to a single hard disk. In other words, the higher the
frame rates you wish to record, the more hard disks you’ll need to. For detailed information of
recording frame rates, refer to the user’s manual of the IP camera that you wish to connect to.
