Evening in Parambikkulam, Kerala, India. Evening is the time of the day between daytime and night or between sunset and bedtime. There is no precise definition in terms of clock time, but it is often considered to start around 5 p.m., 6 p.m. or 7 p.m. and to last until night-time or bedtime.
its true that WD does not make a single patter 7200rpm laptop drive in the 500+GB range (yet). The largest single platter drive you can get in 2.5 7200rpm is the 320GB WD3200BEKT. The Blue 5400rpm drive does come in a single platter 500gb size: WD5000BPVT, WD5000LPVX, & WD5000MPCK.
A disk drive is a randomly addressable and rewritable storage device. The term can be broadly interpreted to include optical drives and in earlier times, floppy drives. However, in popular usage, it has come to relate mainly to hard disk drives (HDDs).