Make a compressed package on the mechanical hard drive and the solid state drive respectively. The time difference is several times.

The principle of a mechanical hard disk is similar to that of an optical disk. Its main structure is a high-speed rotating disk and a magnetic head that reads and writes data back and forth on the disk. Solid-state drives store data in the form of electronic storage, and are mainly composed of main control chips, flash memory chips, firmware algorithms, etc.

1. Generally speaking, the read and write speed of mechanical hard disks is between 60-170MB/s. Due to the time limit of the turntable speed and pointer addressing, the speed often does not exceed 200M per second;
2. The speed of solid-state drives can reach up to about 540MB/s. The gap between different brands and models of solid-state drives is very large, with an average speed of about 150-300M per second. Since the flash memory particles and flash memory controller are directly addressed, the solid-state drive reads and writes in terms of file transfer, system operation, etc. The speed efficiency is much greater than that of mechanical hard drives.

Overview

There is a Lightroom project directory that is only 15G, but has a lot of small files. I plan to make a compressed package and delete it.

mechanical hard drive

As a result, after issuing the compression package command, I waited for a few minutes on the mechanical hard disk before the compression progress interface appeared.

After waiting for a long time...

I waited for a while and started processing, but the duration did not appear~~

The prompt is 55 minutes. I remember that the compression was completed after 7 hours at first -_-!

SSD

It took 2 hours to copy the entire directory to the solid state drive, and then package it on the solid state drive. It was prompted to end in 16 minutes.

The difference is about 4 times ~~ It is consistent with what is said on the Internet.

After packaging, it took about 50 seconds to transfer from the solid state to the machine.

delete

Because I packaged it on the mechanical hard drive first, the prompt was 7 hours. I couldn’t stand it, so I moved it to the solid state and packaged it. I found that the speed was so fast, so I took a screenshot and wrote a blog. Then in order to test the mechanical hard drive, I copied it back and repackaged it. Now that the test is over, prepare to delete the directory on the mechanical hard disk and see the results. . . Deletion takes 2 hours, which is slower than packaging. . .