SSD vs HDD, which one is better?

Questions about hard disks' performance, issues, tips, and software.
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SSD vs HDD, which one is better?

Post by kiran »

There is no straight forward answer to your question. First, you need to know that how HDD and SSD work and then cross-match some parameters of HDD and SSD with your needs. Finally, you will decide which will be better for you. (So, Read till the end and then pick one of them)

The Hard Disk Drive (HDD), which has been around for the last half-century and still used in many mainstream systems. The Solid-State Drive (SSD), widely introduced in the previous decade. SSD has quickly transformed the performance and capability of modern data storage systems. Here are the parts of HDD and SSD:

How HDD and SSD work?

The HDD uses small moving parts to seek out data on a spinning platter mechanically. In contrast, SSD uses flash memory to store and access data. As a result, SSD can access your files and programs almost instantly.

Let's see some comparisons like price, storage capacity, speed:

HDD vs. SSD: Price

A 1TB internal 2.5-inch hard drive costs between $40 and $60 or less than that. The price of Hard drive (HDD) has decreased day by day.
SSDs are more expensive than hard drives in terms of dollar per gigabyte. To buy a quality SSD of 1TB, you need to spend $125-$500 or more than that.
HDD vs. SSD: Capacity

Commercial hard drives (HDDs) capacities range from 40GB up to 12TB for a while 8TB to 12TB size primarily used for servers and NAS devices. For Instance, you can get a 2TB hard drive for an affordable price, which offers you plenty of space.
You can get an SSD up to 4TB Storage capacity. You can try a smaller SSD, maybe around 160GB–256GB.
HDD vs. SSD: Speed

Solid-state drives (SSD) have always been much faster than traditional hard drives. In general, a SATA III hard drive speeds will be around 100MB/s (5,400 RPM) to 150MB/s (7,200 RPM).
Average speeds for PCIe/M.2 SSDs will be from 1.2GB/s up to about 1.4GB/s. And if you've got the budget, you can reach 2.2GB/s.
When you need to use an SSD or HDD?

You can use HDD for Disk arrays (NAS, RAID, etc.) where high capacity is needed, Desktops, when low cost is the priority, Media storage, etc.
You can use SSD for Notebooks, laptops, where performance, lightweight, areal storage density are desirable, Boot drives holding operating system, Cache drives, Database servers, etc.
Best practice:

Use smaller SSD like 256 GB for your operating system to take advantage of the SSD's higher speed and then you can use an HDD to store other files where speed isn't as important.

You can now buy new or refurbished Dell 250GB 7.2K RPM 3G 3.5 Inch SATA Hard Disk 0GM248 at best price in Nigeria.
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