What are the main parameters of the hard disk, and what are the main parameters of the hard disk

The hard disk has a series of basic parameters, including: brand, model, capacity, number of cylinders, number of heads, number of sectors per track, serial number, cache size, speed, value, etc.

Here are the main parameters:

Rotational speed: The hard disk is usually calculated by revolutions per minute (rpm): this indicator represents the speed of the spindle motor (driving the disk) of the hard disk, for example, 5400 rpm means that the spindle speed in the hard disk is 5400 revolutions per minute.

At present, mainstream notebook hard drives.

The rotational speed is 5400rpm; Desktop hard drives are 7200 rpm.

Single-disk capacity: Single-disk capacity is one of the most important parameters of a hard disk. A hard disk is a combination of multiple storage disks, and the capacity of a single disk refers to the maximum amount of data that can be stored in a single storage disk.

With the help of vertical recording technology, the capacity of a single disk has been upgraded from 80GB to 250GB or 320GB

The average seek time refers to the time taken by the hard disk to move the read/write head on the disk to find the corresponding target data on the specified track, in milliseconds. When the capacity of a single disc increases, the seek action and travel distance of the head decreases, resulting in a reduction in the average seek time and faster access to the hard disk.

Cache: A cache is a temporary place for a hard drive to exchange data with the outside.

Internal Data Transfer Rate:

The internal transfer rate refers to the data transfer rate between the hard disk head and the cache, which is simply the speed at which the hard disk reads data from the platter and then stores it on the cache. The internal transfer rate can clearly indicate the read and write speed of the hard disk, and its level is the decisive factor in evaluating the overall performance of a hard disk. At present, most desktop hard drives are basically between 70-90MB s, and laptop hard drives are around 55MB s.

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Dear, I'm glad to be able to answer for you, hard disk is one of the main devices for computer data storage. Its main parameters are:1

Capacity: The capacity of a hard disk refers to the size of the data that can be stored in the hard disk, which is usually expressed in GB or TB. Generally speaking, the larger the capacity of the hard drive, the larger the amount of data stored, and the higher it will be.

2.Rotational speed: The rotational speed of a hard disk refers to the rotational speed of the platter that rotates rapidly inside the hard disk, usually expressed in revolutions per minute (rpm).

The cache of a hard disk refers to the size of the cache area inside the hard disk where data is stored, and this cache area can store the data that is about to be read and written, so that the data can be read and written faster. The larger the cache chain, the faster the response time will be for many read and write data operations in a short period of time. 4.

Interface type: The interface type of the hard disk refers to the type of interface for data transmission between the hard disk and the computer, such as IDE, SATA, SCSI, etc. Different interface types have different transmission rates and stability, and need to be selected according to the actual application scenario.

5.Other side parameters: The hard drive has some other parameters, such as average seek time, average write time, failure rate, operating temperature, and so on.

These parameters are also very important, generally speaking, the smaller the better, because these parameters are directly related to the stability and reliability of the hard disk.