What are the main technical indicators of a hard disk?

1, hard disk capacity indicators also include the hard disk's single-disk capacity. The so-called single-disk capacity refers to the capacity of a single disk of the hard disk, the larger the single-disk capacity, the lower the unit cost, the shorter the average access time.

2, the hard disk's main performance indicators include hard disk capacity, hard disk speed, hard disk speed, interface, cache, hard disk capacity. The first important performance indicator is the single-disk capacity.

3, speed: ordinary hard disk is now the mainstream speed of 7200 rpm, the mainstream speed of the server hard disk 10000 rpm. Cache: the larger the better, the mainstream 8MB. interface: only two, IDE and SATA. now popular the latter, because the transmission speed is fast.