disk overhead: (computer science) the disk space required for information that is not data but is used for location and timing
disk space: (computer science) the space available on a magnetic disk
sarcoscypha coccinea: a discomycete that is a harbinger of spring; the fruiting body is thin and tough and saucer-shaped (about the size of quarter to a half dollar) with a deep bright red upper surface and a whitish exterior