Do you have a 1TB hard drive now and how much does it cost?

Do you have a 1TB hard drive now? --There must be, but if you buy it, it is recommended to buy 2t, which is more cost-effective than 1t.

Cost-effective: Hitachi 1TB 7200 rpm 32MB SATA3 single disc 350-400 yuan.

Average performance: Western Digital 1TB 5400 rpm 32MB SATA3 green disk 350-400 yuan.

Others, such as Seagate and Western Digital's 7200 rpm, are basically between 700-800.

Yes, **ongoing**. Now it's up to more than 800.

Yes But the price is too high.

Yes, due to the water in Southeast Asia, the hard disk has risen wildly.

1tb=1024g。

Hard disk is one of the main storage media of a computer, consisting of one or more aluminum or glass discs. The disc is covered with a ferromagnetic material. Hard disks include solid-state drives (SSD disks, modern hard disks), mechanical hard disks (HDD traditional hard disks), and hybrid hard disks (HHD, a new hard disk born based on traditional mechanical hard disks).

SSD uses flash key memory particles to store, HDD uses magnetic disks to store, and hybrid hard disk (HHD: Hybrid hard disk) is a kind of hard disk that integrates magnetic hard disk and flash memory into Kaiqiao. The vast majority of hard drives are fixed hard drives that are permanently sealed and fixed in the hard drive.

A bit is the smallest unit of storage.

Terabytes, or terabytes, are a unit of computer storage capacity. 1TB = 1024GB = 2 40 bytes.

Computer storage units are generally expressed in bytes (bytes), kilobytes (KB), megabytes (MB), gigabytes (GB), terabytes (TB), petabytes (PB), exabytes (EB), zetabytes (ZB, also known as bytes), and Yao bytes (YB, also known as yobytes). <>

Not cost-effective. A hard drive with a nominal capacity of 4TB has a theoretical capacity of about 3725GB when viewed in a computer system, but the actual capacity is slightly less than this value. As the data storage of a computer system, capacity is the most important parameter of a hard disk, and the capacity index of a hard disk also includes the capacity of a single disk of the hard disk.

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, and the shorter the average access time.

Hard drive considerations.

To maintain a clean working environment for hard drives, if too much dust is adsorbed on the surface of the hard drive circuit board, it will cause the hard drive to work unstable. When using the computer in a humid season or environment, pay attention to the dry environment or power up the computer frequently, and rely on its own heat to evaporate the moisture.

Try not to keep the hard disk close to strong magnetic fields, such as speakers, CRT monitors, etc., to avoid the data recorded in the hard disk being damaged due to magnetization.

The kb, mb, gb, and tb you are talking about are all data units, and the size relationship between them is b, but you will find that the U disk that you bought 8G plugs into the computer to check that it is less than 8G.

This is because the capacity of the USB flash drive is calculated in the same way as the capacity of the hard disk, and the definition of the capacity of the hard disk by the hard disk manufacturer is different from the algorithm of the operating system for the capacity of the hard disk, so there is an error between the capacity of the hard disk identification and the actual capacity displayed in the operating system.

After buying a hard drive, careful people will find that the capacity of the hard disk in the operating system does not match the official nominal capacity, it is less than the nominal capacity, and the larger the capacity, the greater the difference. A hard drive with a nominal 40GB is only 38GB in the operating system; An 80GB hard drive is only 75GB; A 120GB hard drive is only 114GB. This is not caused by manufacturers or distributors deceiving consumers with shoddy products, but by the different calculation methods of hard disk manufacturers and operating systems, and by different unit conversion relationships.

As we all know, binary is used in computers, so that the calculation of capacity in the operating system is based on 1024 as a base, 1KB per 1024 bytes, 1MB per 1024KB, 1GB per 1024MB, and 1TB per 1024GB; In terms of computing capacity, hard disk manufacturers use every 1000 as a base, 1KB per 1000 bytes, 1MB per 1000KB, 1GB per 1000MB, and 1TB per 1000GB.

Hard disks need to be partitioned and formatted, there are differences between operating systems, coupled with the behavior of copying files when installing the operating system, the hard disk will take up more space, so there will be a difference between the hard disk capacity and the nominal capacity displayed in the operating system, and the difference between the two types of hard disk capacity should be about 5%-10%.