Is the difference between Winchester hard drive and mobile hard drive easy to carry?

In 1973, IBM successfully developed a new type of hard disk IBM334. This hard drive has several coaxial metal discs coated with magnetic material. They are sealed in a box together with a removable magnetic head. The magnetic head can read the changes in magnetic signals from the rotating disk-this is the ancestor of the hard disk we use today. IBM calls it a Winchester hard disk.

The 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 ferromagnetic material.

Hard disks include solid state drives (SSD disks, new hard drives), mechanical hard drives (HDD traditional hard drives), and hybrid hard drives (HHD, a new hard drive based on traditional mechanical hard drives). SSD uses flash memory particles for storage, and HDD uses magnetic disks for storage. Hybrid hard disk (HHD: Hybrid Hard Disk) is a hard disk that integrates magnetic hard disk and flash memory. The vast majority of hard drives are fixed hard drives, which are permanently sealed and fixed in the hard drive. Especially mechanical hard disks can only be disassembled by professionals using professional tools under special circumstances, and after disassembly, the hard disk is likely to be damaged.

Head reset energy-saving technology: Energy saving by resetting the head during idle time.

Multi-head technology: Speed ​​up the hard disk by adding multiple heads on the same disk to read or write at the same time, or use heads to read or write on multiple disks at the same time to speed up the disk. It is mostly used in servers and database centers.

In most cases, it is assembled into a PC or notebook to store data.

Mobile hard drives are storage products that use hard drives as storage media to exchange large-capacity data between computers, emphasizing portability.

In home or business, store data, such as photos, videos, audio recordings, office documents, etc.

The mobile hard disk, as its name implies, is a storage product that uses a hard disk as a storage medium to exchange large-capacity data between computers and emphasizes portability. The vast majority of mobile hard drives on the market are based on standard hard drives, and only a few of them are micro hard drives (1.8-inch hard drives, etc.), but the price factor determines that mainstream mobile hard drives are still based on standard laptop hard drives. Because the hard disk is used as the storage medium, the data read and write mode of the mobile hard disk is the same as that of the standard IDE hard disk. Mobile hard disks mostly use USB, IEEE1394 and other faster transmission speed interfaces, which can transmit data with the system at a higher speed. As of 2009, the read speed of mainstream 2.5-inch brand mobile hard drives is about 15-25MB/s, and the write speed is about 8-15MB/s.

Most mobile hard drives have USB interfaces, but due to the limited capabilities of the USB interface, the 2.5' hard drives used by mobile hard drives are actually different from the hard drives used on laptops. Laptops require hard drives to start quickly, so the startup current of the laptop hard drives is larger, about 900mA. The start-up time of the disc used by the mobile hard disk is slightly longer, and the start-up current is lower, generally about 700mA. So if you assemble your own mobile hard drive, you still need to find a special mobile hard drive version of the core. The 3.5-inch hard disk box uses a desktop computer hard disk, which is large in size and relatively poor in portability. The 3.5-inch hard disk box generally comes with an external power supply and a cooling fan.

Hard disk (Hong Kong and Taiwan call it hard disk, English name: Hard Disc Drive, or HDD, full name Winchester hard disk) is one of the main storage media of computers, consisting of one or more aluminum or glass discs . These discs are covered with ferromagnetic material. The vast majority of hard drives are fixed hard drives, which are permanently sealed and fixed in the hard drive. The hard disk in the computer is generally installed in a fixed main box, but if you need multiple hard disks to use, you can also extend the hard disk interface to the outside of the main box, so that it can be easily disassembled and used.

The hard disk is an accessory of the computer and is used in conjunction with the host, which is not convenient to carry and move. The mobile hard disk is an external storage device, to put it bluntly, it is a large-capacity U disk, which has the characteristics of large capacity and fast transmission speed.

Hard disks include solid state drives (SSD disks, new hard drives), mechanical hard drives (HDD traditional hard drives), and hybrid hard drives (HHD, a new hard drive based on traditional mechanical hard drives). The vast majority of hard drives are fixed hard drives, which are permanently sealed and fixed in the hard drive.

As the name suggests, mobile hard drives are storage products that use hard drives as storage media to exchange large-capacity data between computers, emphasizing portability. Mobile hard disks mostly use USB, IEEE1394 and other faster transmission speed interfaces, which can transmit data with the system at a higher speed