Hikvision Tools Download - You can make calculations for IPC
How to Use the Latest Version of Hikvision iVMS-4200 (V3.x) - SafeTrolley
HikVision Storage Calculator - Not recording enough days! - IP/Megapixel Cameras and Software Solutions - CCTVForum.com
How to calculate the bandwidth my cameras consume, the recording time according to my hard disk, or which hard disk I need to record a certain period of time – Visiotech