What the difference between HDD, SSD, NVME SSD. Why use the last?

What are HDD, SSD, NVMe SSD?

HDD, SSD, NVMe SSD these are the standards of information stores. In other words, these are the hard disks where the data is stored, in our case the data of the clients and their sites.

 

Let's look at the difference between them

HDD. These drives are old generation, and they haven’t changed since 1990. It works by remagnetizing cells on magnetic plates. They run at 4300, 5400 rpm and at a speed of 60 to 90 MB/s.

Since 2001, some manufacturers  begun to make drives from 7200 rpm, this increased the speed of operation to 90 - 120 MB/s. But for good hosting it's not too much.

Among the minuses  can be identified:

•  - Low speed of reading and writing data;
•  - High noise level;
•  - High power consumption.

SSD. Drives based on memory chips. Work much faster than the previous ones, namely at 700 - 1100 MB/s. Don’t create noise and vibration. Use much less electricity.

From the minuses can be noted:

•  - Limited number of read/write cycles (approximately 10,000);
•  - Inability to recover deleted information.

NVMe SSD. These are the same SSD drives, only they are connected not through the SATA interface, but by PCI Express. The NVMe disk provides a large read-write speed, namely about 3 GB/s. Another feature is its own protocol, developed by Intel, which gives a great performance of disks with a lot of simultaneous requests.

Why should  use NVMe SSD?

As it was said before, NVMe SSDs have their own interface, for processing a large number of requests simultaneously, which greatly affects the download speed of the site and its performance. Compared to conventional SSDs, the site load is performed twice as fast (with a conventional SSD of 1.19 seconds, with an NVMe SSD of 0.58 seconds). For professionals of  hosting, this can be the big importance.