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.
Welcome to Chester! 1  Welcome to Chester!  Chester, South Carolina is at the center of a growing county and diverse economic and agricultural region, with a rich, proud heritage and a progressive vision for the future.