The primary difference between a police chief and a police director is that the position of police chief is a sworn law enforcement position, while someone serving as a police director is employed in a civilian capacity.hief of police positions are created by state statute and are under strict duties and guidelines set forth by the state legislative body. The chief of police is the highest ranking position on a police force, answerable only to the Board of Commissioners.
A disk cache is an integrated part of the hard disk and is a standard feature of most hard disk drives. The size of disk cache ranges from 128 MB in standard disks to 1 GB in solid state disks. Typically, a disk cache stores the most recent and frequently used programs and data. When a user or program requests data, the operating system first reviews the disk cache.
The capacity of hard drives has grown exponentially over time. When hard drives became available for personal computers, they offered 5-megabyte capacity. During the mid-1990s the typical hard disk drive for a PC had a capacity of about 1 gigabyte. As of December 2014, desktop hard disk drives typically had a capacity of 500 to 4000 gigabytes, while the largest-capacity drives were 8 terabytes.