Şu anda, hepsi bir arada-bilgisayarların öğretiminde kullanılan iki sabit disk seçeneği vardır: mekanik sabit diskler ve katı-diskler. Bazılarınız sabit diskleri iyi bilmiyor olabilir. Hepsinin-tek bir makinede-öğretilmesinin ne tür bir sabit diski var ve rolü nedir?
öğretim makinesi
Mechanical hard disk is a traditional hard disk, which is mainly composed of: magnetic disk, magnetic head, disk spindle and control motor, magnetic head controller, data converter, interface, high-speed cache, etc. All the disks on the mechanical hard disk are mounted on the rotating shaft, and each disk is parallel. The mechanical hard disk has a magnetic head on the storage surface of each magnetic disk, and the distance between the magnetic head and the magnetic disk is smaller than the distance between the magnetic head and the magnetic head. The diameter of the wire is still very small, and all the heads are connected to the head controller, which is used for the movement of each head. The magnetic head can move along the radial direction of the disk and rotate at a high speed of thousands of revolutions per minute. The magnetic head can be positioned to read and write data before the designated direction of the disk. The hard disk is a delicate device, and dust is its enemy, so it must be completely sealed.
The solid-state hard disk is composed of a group of solid-state electronic storage chips, including a control unit and a storage unit (FLASH chip, DRAM chip). There are no mechanical parts inside the solid state drive, so even high-speed tilting will not affect normal use, and the possibility of discarding data in the event of collision and feeling is minimized.
Mechanical hard disk is a type of disk, and data is stored in disk sectors. Solid state drives are composed of flash memory particles (memory, mp3, u disk, etc.), which make solid state drives lighter. There are no mechanical motors or fans, which means there is no fear of noise and touch. Due to the use of flash media, the seek time is almost zero, and the writing speed continues to be faster than that of mechanical hard disks, unlike mechanical hard disks, which have different speeds due to the inner and outer ring partitions.
Different storage media, increase the capacity of mechanical hard drives, the maximum capacity of solid state drives is only 4TB, and the capacity of solid state drives at the same price is much smaller than that of mechanical hard drives. This is the biggest advantage of SSD mechanical hard drives. In addition, solid state drives use flash particles to store data. Even with SLC, it only requires 100,000 read and write lives. The relatively low cost of MLC has a maximum of 10,000 read and write life cycles. The glitter particles are only erased 1000 times. In contrast, a mechanical hard disk can be read and written more than once, and there is no need to worry, because repeated erasing will shorten the service life.
Generally speaking, manufacturers of teaching all-in-ones equip customers with 128GB solid-state hard drives, because all-in-ones do not store a lot of content. The standard capacity basically meets actual needs.
