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

Distinguishing method: if the hard disk capacity is within 2TB, if the storage is 256MB, then it is a shingled hard drive; vertical hard drive, below 2TB is a 64G cache. In addition, you can also use some test software in your computer to test the random read and write performance of the hard disk. Generally, the hard disk with poor performance is the shingled hard disk, and the vertical hard disk has better performance.



How to distinguish vertical hard drives?

Normal PMR vertical hard disk, 64G cache below 2T, 128G cache above 2T, vertical hard disk erases data when the write head is relatively wide, but the read head is relatively narrow, so in fact, when writing This track is used in all places and will not affect other data in the nearby track. When reading, only the middle area needs to be read, so relatively speaking, the security is relatively high.

How to distinguish shingled hard drives?

The full name of shingled hard drives is "corrugated stacked hard drives". When purchasing hard drives, consumer-grade mechanical hard drives have a capacity of less than 2TB. If the cache has 256MB, they are basically shingled hard drives. After the hard disk is in hand, you can also use some hard disk test software to perform random read and write performance tests on it. Generally, if the performance is much worse than the product of the same capacity, it should also be an shingled disk.

Vertical hard drives have better performance, fast random read and write speeds, and long service life.

The difference between a vertical hard drive and a shingled hard drive: the

main advantage of the vertical drive is that it will not affect other data in the nearby tracks when erasing data, so the security is relatively higher, and it will not burden the hard drive when writing data to fragments It is too heavy and the speed drops significantly. In addition, because the shingled erasing and overwriting of data requires the head to write data twice, the relative head life will be affected.

Shingled hard disks can achieve 2T per disk, so the number of disks in the hard disk with large capacity can be reduced, and the overall thickness of the hard disk and vibration heating can be better controlled, and the reduction in the number of disks can also reduce failures to a certain extent. rate. In addition, if it is used as a warehouse disk to write data once and then perform a read operation, the experience of using the shingled disk is not much different from that of the vertical type.