Comment by dogman1050

In the late '90s I worked for a startup that was building a video server based on a massive custom SIMD engine, each processor having its own disk drive in a RAID 3 configuration in totality. Our integration lab had a 256 proc system, with each disk having an activity LED. Open all the disk cabinet doors, turn off the lights, play a video, and watch 256 lights blink in unison every 0.8 sec or so. Neat!