rapid

adj 1: done or occurring in a brief period of time; "a rapid rise

through the ranks"

2: characterized by speed; moving with or capable of moving

with high speed; "a rapid movment"; "a speedy car"; "a

speedy errand boy" [syn: {speedy}]

n : a part of a river where the current is very fast

RAID

{Redundant Arrays of Independent Disks}