In Video Editing arena, High Definition (HD) refers to resolution higher than 576 lines. In general the HD frame is either 1280(pixels) x 720 (lines), or 1920 x 1080. The biggest problem you run into when working with this higher resolution is data rate. A 1920 x 1080 10-bit 4:2:2 30fps requires 1.2+Gbps which translates to 540+GB per hour space requirement. In addition to capable capture solution, internal bus and processing power, RAID with qualified performance is the key to support the application. In real video editing practice it requires RAID storage to offer more than 400MB/sec. Raidstore DAS series 485MB/sec dual-channel performance (w/ RAID 5) is the best answer in the industry. Digital surveillance is another huge market driver for high-capacity low-cost storage. Consider a typical example: 16 cameras, 640x480 VGA resolution, mainstreams MPEG4 compression, 30 frames per second, high recording quality, one-day 24 hours continuous recording it takes roughly 100GBytes of disk space. For those facilities demanding high security control such airports, hospitals, banks and so on, they need multi-Terabytes class of storage as Raidstore DAS series for sufficient period of video retention.