How to distinguish between shingled hard drive and vertical hard drive?

How to distinguish: If the hard drive capacity is within 2TB, if the storage is 256MB, it is a shingled hard drive; for a vertical hard drive, if it is less than 2TB, it has a 64G cache. In addition, you can also use some test software on your computer to test the random read and write performance of the hard drive. Generally, the hard drive with poor performance is the shingled hard drive, while the vertical hard drive has better performance.

#The operating environment of this article: windows10 system, thinkpad t480 computer.

How to distinguish vertical hard drives?

Normal PMR vertical hard disk has a 64G cache below 2T, and may have a 128G cache above 2T. When a vertical hard disk erases data, the writing head is relatively wide, while the reading head is relatively narrow. So in fact, not all the places on this track are used when writing, and it will not affect other data in nearby tracks. When reading, only the middle area needs to be read, so it is relatively safe. The sex is still relatively high.

How to distinguish shingled hard drives?

The full name of shingled hard drive is "corrugated stacked hard drive". When purchasing a hard drive, if the capacity of consumer-grade mechanical hard drive is within 2TB, if the cache has 256MB, it is basically shingled. hard drive. After the hard disk is obtained, you can also use some hard disk test software to test its random read and write performance. If the general performance is much worse than that of products with the same capacity, it should also be a shingled disk.

The vertical hard drive has better performance, fast random read and write speed, and long service life.

The difference between vertical hard drive and shingled hard drive:

The main advantage of vertical hard drive is that it will not affect other data in nearby tracks when erasing data, so it is safe The performance is relatively higher. At the same time, fragmented writing of data will not cause the hard disk to be overburdened and slow down significantly. In addition, because the operations of shingling erasing and overwriting data require the magnetic head to write data twice, the relative head life is will be affected by this.

The shingled hard drive can achieve 2T per disk, so the number of disks in a large-capacity hard disk can be reduced. The relative overall thickness of the hard disk and vibration and heat can be better controlled, and the reduction in the number of disks can also It can reduce the failure rate to a certain extent. In addition, if the data is written once as a warehouse disk and then read, the experience of using the shingled disk is not much different from that of the vertical disk.

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