1 The hard disk has a small arm that can move from ring to ring on the surface of the disk. To reach a particular sector, the hard disk moves the arm to the right ring and waits for the sector to spin into position.  Hard disks are slow in computer terms.
Chester William Nimitz, Sr. (/ËnÉªmÉªts/; February 24, 1885 â February 20, 1966) was a fleet admiral of the United States Navy.
Chester is linked directly to the national motorway system via the M53 and London and all the major regions of the UK are easily accessible from the City. By Rail. Chester is well served by the British Rail Intercity network and enjoys fast frequent rail links to London and major cities in the UK.