Solid State Drives v/s Hard Disk Drives: A Comparison


Data storage has always been one of the most research-intensive areas in the IT hardware industry and is a massive battleground for research and development. Hard drives, based on magnetic memory, themselves, can be considered a tremendous innovative breakthrough that changed the way we store and perceive data.

An SSD or a Solid State Drive is another data storage technology that is based on storing data in the form of primary memory of a series of chips. These chips are not like the flash memory chips that you find on pen drives/flash drives. SSD chips are way more reliable and stronger regarding data storage (and hence more expensive).

This is in extreme contrast to ordinary hard drives, where the magnetic memory allows for a more substantial amount of data to be stored.


Here are some base differences between HDDs and SDDs:

1) Pricing: SSDs are expensive than HDDs because of the technology involved in manufacturing them. Given that SSDs are based on chip/semiconductor technology, they are naturally costly that the magnetic-coating-on-metal based HDDs. To give you a better perspective, understand that a 1 TB HDD would cost near around Rs3000 to Rs 4000 (a bit less or more depending on the brand) as of today. An SSD with the same capacity would cost you roughly five times as much as the cost for HDDs. Want a good 1TB Hard Disk? See: 1TB Hard Disks.

2) Standard Sizes: Given that SSDs are expensive than HDDs, they are usually found in lower capacities. Although you can still buy 4TB SDDs, they are quite rare, since not many people buy them for their price. HDDs, on the other hand, are easier to find in the capacity ranges 500 GB to 1 TB, and those with multimedia preference will go as far as 4TB.

3) Booting Speed: SSDs surpass HDDs here given their semiconductor-based superior make. An average SSD will boot quite fast as your machine boots up when it starts. An HDD, on the other hand, will boot comparatively slowly (sometimes painfully slowly) when it boots uploading all the basic OS information or the specs that are involved.

4) Functioning: SSDs understandably don’t have any moving parts since they are based on semiconductor technology. Therefore, aphysical shock to the SSD drive is less likely to affect its functionality. HDDs, on the other hand, are vulnerable because the disk head inside spins and the pin located above moves according to the position of the data that has to be read.

5) Noise Generation: Given that HDDs, work on spinning plates or optical surfaces, it is quite evident that they generate a good amount of noise and vibrations, especially while your computers are in the booting process. SDDs, on the other hand, do create any vibrations, understandably due to their semiconductor/electronic circuit based make-up.

6) Size and Form: Again SSDs triumph over HDDs, because the latteris based on metal surfaces coated with themagnetic coating and reading pins that hover around the spinning disk, you cannot make them size-economical. SDDs however, can be shrunk if their makers apply Moore’s Law smartly.

That being said, it makes sense that SDDs are way better than HDDs, however, due to the enormous difference in costs, they are usually used in industrial grade computers, server systems, and control terminals, while HDDs are made for home and office use.

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