Why does SSD storage load much faster than HDD storage?



Why does SSD storage load much faster than HDD storage?

In: Technology

Simplest answer:

An SSD has no moving parts, and stores information On microchips, like a more complicated larger USB memory stick. Because of this, it can close to instantly access information and start moving it.

And HDD has moving parts, it has a moving arm which must move across a spinning disk to read information off of it. This means an HDD is limited by how fast that arm can move and that disk can spin.

Solid state drives have no moving parts. It’s pure voltage through circuits instantaneously. Hard disk drives have moving parts, data is stored in different places, and the action of the moving arm to read each individual part of the drive slows the reaction time. Kind of like trying to talk with hic-cups vs talking without hic-cups.

SSD is like having a filing cabinet right next to you. You open the drawer and there’s the file. A hard drive is like having files all over your house. When you want a certain file you have to run to each room look at the file see that’s not it then run to another room until you find the file you want.

In addition to what everyone else has said, the SSD can send multiple electrical signals in parallel to access a large amount of data all at once. A HDD only has one (or rarely two) read heads so it can only read one (or two) things at a time. This is more relevant for reading/writing large blocks of data while the ‘no moving parts’ explanation is more relevant for smaller blocks of data.

On a HDD, the data is stored on a bunch of magnetic platters like tiny vinyl records, and so, to read or write data, the HDD has to physically swing a tiny arm out to the right physical location on the disk.

When dealing with a lot of small files, a HDD has to move those tiny arms around a lot because while the data itself is spread across the surface of the disk, a lot of the basic file information is contained in a sort of reference table all the way at the beginning of the disk.

On an SSD, the data is stored directly in electric circuits. There are no moving parts, so reading/writing data happens instantaneously.

Really good answers, thanks y’all. Now I just need to invest in an SSD lol