SSD vs. HDD vs. SSHD

When building your own system or replacing the storage of your computer/laptop there are certain specs you might need to know before buying. You have three options when it comes to storage components, those are SSD, HDD AND SSHD.

A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that uses magnetic storage to store and retrieve digital data using one or more rigid rapidly rotating platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces.


- HDD is easy to buy as it is not as much expensive.

- The storage capacity of HDD is very large.

- HDD are so common and easily available in any market or place.

- The life span of HDD is longer in terms of read and write cycle.


- HDD has moving parts so chances of failure of any part can occur at any time.

- It has to move around to get the information, this makes HDD little slow in performance.

- HDD is large and bulky in size. So you can’t use it in small devices like mobiles phones, tablets or mini laptops.

- HDD uses a large amount of power.

- It creates noise while working.

- HDD uses more powers.

A solid-state drive (SSD) is a solid-state storage device that uses integrated circuit assemblies to store data persistently, typically using flash memory, and functioning as secondary storage in the hierarchy of computer storage. It is also sometimes called a solid-state device or a solid-state disk, although SSDs lack the physical spinning disks and movable read-write heads used in hard drives ("HDD") or floppy disks.

Compared with the electromechanical drives, SSDs are typically more resistant to physical shock, run silently, and have quicker access time and lower latency.


- SSD is fast as it has no moving parts.

- As SSD has no moving parts so chances of failure is less, and this makes SSD reliable and durable.

- No data is overwritten in SSD.

- It uses less power.


- SSD is expensive to buy if we talk about money.

- It has less and limited memory space.

- It is hard to find SSD in market as its availability is not so common.

- SSD has shorter life span because its flash memory can only be used for a limited number of writes.

And there's also a third option.

In computing, a hybrid drive (solid state hybrid drive – SSHD) is a logical or physical storage device that combines a faster storage medium such as solid-state drive (SSD) with a higher-capacity hard disk drive (HDD). The intent is adding some of the speed of SSDs to the cost-effective storage capacity of traditional HDDs. The purpose of the SSD in a hybrid drive is to act as a cache for the data stored on the HDD, improving the overall performance by keeping copies of the most frequently used data on the faster SSD.


- SSHD drives are more reliable in use, as it has high speed with large space.

- It spins less and parts move less.

- You can easily access to those files and data which you use frequently.

- SSHD lasts much longer.

- SSHD is not expensive so you can easily buy it staying in your budget.


- The HDD portion of SSHD is made up of fragile, so there is a chance of damaging if SSHD dropped or exposed.

#hdd #ssd #sshd #storageevolution #computerengineering

#computerworld #pccomponents

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