AllFrame Technology - reduction of video frame loss rate.
This cache algorithm improves playback quality of recorder data, reduces errors and lost frames and increases the number of cameras supported by the system. |
AllFrame Technology is an extension of SilkStream technology used in AV-GP series CCTV optimized WD HDDs. In the latest solution, the number of supported HD video streams was increased from 12 to 32. |
Video 1. Performance comparison of HDD for desktop applications with WD Purple HDD using AllFrame technology (simulation provided by Western Digital) |
In 2014, the manufacturer compared the performance of HDDs with AllFrame technology with other available CCTV optimized HDDs. In a 16-camera setup, WD Purple HDDs provided a 5% better performance compared to other devices. The difference in performance has increased with the increase in number of cameras to 32. During HD video stream write/read test, WD Purple HDDs were in standby mode almost 50% of the time, whereas other HDDs were in standby mode only 30% of the time. It reduces wear of electromechanical components and overall HDD degradation. Also, WD Purple HDDs during standard operation were 45% more energy efficient compared to other HDDs. |
Full AllFrame support requires a compatible HDD controller. If the controller is not available, the video streams are handled using a standard ATA streaming command set. |