This reminds me a little of reel-to-reel tape storage. It seems to me that the throughput could be enormous but the seek time would vary according to how physic

This reminds me a little of reel-to-reel tape storage. It seems to me that the throughput could be enormous but the seek time would vary according to how physically long the race track was, so if you double the capacity you double the seek time. Or am I getting the wrong end of the stick?