The difference between HDDs and what HDDs are

Comparison of the advantages and disadvantages of HDDs and SSDs.

1. Shockproof and drop-resistant: mechanical hard disks are all disk-type, and the data is stored in the disk sector. The SSD is made of flash memory particles (i.e., memory, ***, USB flash drive and other storage media), so there are no mechanical parts inside the SSD SSD, so that even in the case of high-speed movement or even with flipping and tilting, it will not affect the normal use, and the possibility of data loss can be minimized in the event of collision and **.

Compared with mechanical hard disks, solid hard has an absolute advantage.

2. Data storage speed: According to the evaluation data of the PConline evaluation room, the performance of SSDs is more than 2 times higher than that of mechanical HDDs.

3. Power consumption: The power consumption of solid-state drives is also lower than that of mechanical hard disks.

4. Weight: SSDs are lighter in terms of weight, 20-30 grams lighter than conventional inch hard drives.

5. Noise: Because the solid hard belongs to no mechanical parts and flash memory chips, it has the characteristics of low heat generation and fast heat dissipation, and there is no mechanical motor and fan, and the working noise value is 0 decibels. Mechanical hard drives are much inferior.

6. **: As of now (2014 11 23), the 128GB SSD of the common brand is about 450. And the 1TB HDD** is only about 360. SSDs are more expensive and less cost-effective than HDDs**.

7. Capacity: The maximum capacity of SSD is currently 4t inches.

8. Service life: SLC only has a read and write life of 100,000 times, and the low-cost MLC has a read and write life of only 10,000 times. As a result, HDDs have a longer lifespan than SSDs.

The information age is the era in which information generates value, and its representative symbol is"Computers"It is mainly based on information technology, focusing on the creation and development of knowledge, and behind the computer, there is an organic combination of a series of precision instruments and wisdom, of which the hard disk is the most important storage device of the computer.

The hard disk is mainly composed of a disk, a control circuit board and interface components, and the disk is a sealed cavity. The internal structure of a hard disk usually refers to the internal structure of the disk body; The control circuit board mainly has hard disk BIOS, hard disk cache (i.e. cache) and main control chip and other units, and the hard disk interface includes power socket, data interface and master and slave jumpers, (mainly used as data storage for computer equipment).

The small dry goods of the mechanical hard disk continue to be updated Happy Lantern Festival everyone.

Mechanical hard disk is a traditional ordinary hard disk, which is mainly composed of: platter, head, platter hinge and control motor, head controller, data converter, interface, cache and other parts.

The head can move along the radius of the platter, and with the high-speed rotation of the platter at several thousand revolutions per minute, the head can be positioned at the designated position of the platter for data reading and writing operations. The information is written to the disk by the electromagnetic current through the magnetic head very close to the magnetic surface, and the electromagnetic current changes the polarity, and the information can be read in the opposite way. As a precision device, dust is the enemy of the hard disk, so the air entering the hard disk must be filtered.

The mechanical hard disk is our original traditional hard disk, which is mainly composed of 8 parts, such as data converter, interface, and cache. Solid-state drives (SSDs) are hard disks that consist of an array of solid-state electronic memory chips. It is mainly composed of a control unit and a storage unit.

Mechanical hard disk drives (HDDs) are mainly used in our computer hard disk industry, but solid-state drives (SSDs) are more and more widely used, such as our automotive, military and medical and so on. Solid-state drive (SSD) uses flash memory as its storage medium, so its read and write speed is much faster than our mechanical hard disk drive (HDD).

The difference between an SSD and an HDD

1、**。Although now SSDs are decreasing year by year, the same. SSDs can only be bought with a capacity of about 480G, while mechanical disks have a capacity of up to 2T, which is almost 4 times that of SSDs.

2. Power consumption and calorific value.

The power consumption and heat generation of mechanical hard disks are much greater than those of solid state drives, because solid state drives are generally MLC particles, so the power consumption is low, and it has a very low power standby function. Mechanical hard disks need a head to read data, so they need the disk to rotate, with a maximum speed of 7200rpm, which naturally generates a lot of heat.

3. Running noise.

Nowadays, laptops generally use solid-state drives, so you can clearly feel the quietness of the computer when it is running. Especially for some mechanical hard disks that have been used for a long time, you can occasionally hear the sound of grinding between the hard disk needle and the disk.

Mechanical hard disk is the traditional ordinary hard tung blind disk, which is mainly composed of disk, magnetic head local empty, disk spindle and control motor, magnetic head controller, data converter, interface, cache, etc. The head can move along the radius of the disk, which rotates at a high speed of several thousand revolutions per minute, so that the head can be positioned at the designated position of the disk to read and write data. The information is written on the disk by the electromagnetic current of the head close to the magnetic plane, which in turn can be read.

As a hard drive is a delicate device, dust is its enemy, so the air entering the hard drive must be filtered.

Mechanical hard disk is a traditional ordinary hard disk, which is mainly composed of: platter, round pure head, platter hinge and control motor, head controller, data converter, interface, cache and other parts.

The magnetic head can be used to move the cavity along the radius of the platter, and with the high-speed rotation of the platter at several thousand revolutions per minute, the magnetic head can be positioned at the designated position of the platter for data reading and writing operations. years.

Hard disksIt is the most important storage device of a computer computer, which is responsible for providing data storage and reading work.

When we use a computer in our daily lives, we usually use a hard drive. The computer's file information is written to the hard disk by changing the polarity of the electromagnetic current, and when we need to destroy the data files, we read them from the hard disk in the opposite way.

Hard disk is an inseparable part of the computer.

The small dry goods of the mechanical hard disk continue to be updated Happy Lantern Festival everyone.

Mechanical hard disks are diskette hard disks.

Advantages of mechanical hard disk: longer life than solid state disk, large capacity, data is not easy to lose, disadvantages: extremely resistant to shock, a little big vibration may make the mechanical hard disk directly scrapped.

Advantages of SSD: Vibration has little effect on it, and the transfer speed is fast, generally about 500MBS, while HDD is generally about 150MBS. Disadvantage 1:

The data loss cannot be recovered. If there is a problem, it cannot be repaired, it will be scrapped directly, and the data cannot be retrieved. Disadvantage 2: Expensive.

Mechanical hard disk, in the simplest understanding, there are mechanical parts in the hard disk, such as platters, magnetic heads, motors, etc.

Mechanical hard disk is a traditional ordinary hard disk, which is mainly composed of several parts, such as disc destruction and loose pieces, magnetic head, platter shaft and control motor, magnetic head controller, data converter, interface, cache, etc.

All the platters in the mechanical hard disk are mounted on a rotating axis, each arguing platter is parallel to each other, there is a magnetic head on the storage surface of each platter, the distance between the magnetic head and the platter is smaller than the diameter of a human hair, all the magnetic heads are connected to a magnetic head controller, and the magnetic head controller is responsible for the movement of each magnetic head carrying the remaining potatoes.

Hard disks, as the name suggests, have mechanical properties. The mechanical property here is that this type of hard drive has a built-in drive motor. This kind of storage device composed of a driving motor, a rotating shaft, a platter, a magnetic head, and related circuits is called a mechanical hard disk.

The difference between a hard disk and an SSD:The difference between mechanical hard disk and solid state drive is obvious, first of all, the solid state drive has no motor, and the inside of the solid state drive is the storage core and related circuits.

Secondly, the mechanical hard disk works with sound, and the solid state drive works silently; The best, of course, is**, in the case of the same capacity, the ** of the solid state drive is more expensive than the mechanical hard disk.