Hard disk types and characteristics

Hard disk is one of the main storage media of computer, which is composed of one or more disks made of aluminum or glass. This article will introduce the types and characteristics of hard disks.

solid state disk

SSD uses flash particles for storage. Compared with traditional mechanical hard disk, SSD has faster reading and writing speed, better seismic performance, but higher price.

HDD hard disk

HDD uses disk for storage, which is relatively cheap, but its reading and writing speed is slow and its seismic performance is poor.

Hybrid hard disk

HHD is a hard disk that integrates magnetic hard disk and flash memory. It has the advantages of SSD and HDD, moderate price and good performance.

Energy-saving technology of magnetic head reset

The energy-saving technology of magnetic head reset saves energy by resetting the magnetic head in idle time and improves the energy efficiency of hard disk.

Multi-head technology

Multi-head technology is to improve the speed of hard disk by adding multiple heads to the same disk to read and write at the same time, or using heads to read and write on multiple disks at the same time, which is mostly used in servers and database centers.