ITECH VALLEY

             SSD VS HDD The Ultimate Battle

- Either you are binging on technology or actually buying a storage hard disk drive for your computer, we will explain to you the ins and outs of HDD & SSD technology ,

First, we are going to explore the basics:

SSD vs HDD: the basics

How hard drives work

The hard drive of a computer is a device that stores all the software installed on a computer as well as all the data files created and used by this software this includes any documents you  have created and downloaded, as like music photos videos……..

The HARD  Drive is a form of permanent storage, rather than temporary memory such as random-access “RAM” which explains that when turning off the computer, the files endure safely stored on the drive so you can use them the next time you turn on your computer.

There are two general types of hard drives:

 HARD DISK DRIVES (HDD)

Specifications

HDD

Which at the heart of every drive is a stack of high-speed spinning discs with a recording head flying over each surface, each disc is coated with a film of microscopic magnetized meta grains and the DATA doesn’t remain there in a form that you can recognize indeed it is recorded as  a magnetic pattern formed by groups of those tiny grains in each group, also known as a BIT all of the grains have their magnetization’s aligned in one of two possible states which correspond to zeroes and ones, Data is written to the nearest available area. There is an algorithm that processes the data before it’s written, allowing the firmware to detect and correct errors.

The platters spin at preset speeds (4200 rpm to 7200 rpm for consumer computers), those speeds correlate to read/write rates. The higher the preset speed, the faster a hard drive will be able to read and write data.

Solid-State Drives (SSD)

Specifications 

SDD:

Which have no moving mechanical parts, but use flash memory like the kind found in USB flash drives, Instead, it uses NAND flash memory. The more NAND (Negative-AND) memory chips an SSD has, the more storage capacity it has. Modern technology allows SSDs to have more NAND chips than ever, which means SSDs can have capacities similar to HDDs.

Now let's review the difference between HDD and SSD 

SPEED

HDD

• higher latency, longer  write/read times; and supports fewer input-output operations per sec (IOPs) compared to SSD

SSD

• has lower latency, faster read/write and support more inputs output operations per sec

- Comparing between SSDs vs HDDs, speed is where we really begin to see a difference, SSD and HDD speeds are measured in MB/s (megabytes per second) for both read (how fast the drive can read data) and write (how fast data can be written to the drive).

HDD  drive use a spinning platter, so the speed is immensely depending on the revolution per minute  (RPM) the average drive is capable of 7,200 RPM, and even higher we are talking 10,000 RPM.

Worth the mention there are other elements to determine HDD speed, such as a capacity for instance a SATA 3 hard drive at 5,400 RPM will have speeds of around 100MB/s, while a 7,200 RPM will be 150MB/s.

- For the matter that SSD doesn’t have any moving parts like mentioned before their speeds aren’t dependent on RPMs, but on the technology – and the data connection – of the drive.

A solid-state drive with a SATA 3 connection should achieve around 550MB/s read and 520MB/s write speeds, though some will be faster – but will max out at 600MB/s

So, you’re looking at around 10 times the speed if you go for one of these SSDs. When it comes to speed and performance, SSDs are definitely the way to go.

SSD vs HDD: capacity

HDD 

-Capacities range from 40GB up to 12TB for commercial hard drives, while there are even larger capacities for enterprise use? you can get a 2TB hard drive,  which offers you plenty of space. HDDs around the 8TB to 12TB size are primarily used for servers and NAS devices, where you need a lot of space for holding backups.

So, HDDs are good for storing lots of large files, which makes them good for holding photos, videos and games.

SSD

- Generally weren’t capable of such large capacities, but due to modern technology an SDD  with terabytes of storage is eligible now; although it often come with a tremendously high price tag.



Notice

If you are seeking to hold programs such as an operating system for which you want to take advantage of the SSD’s HIGHER SPEED, and then use an HDD to store other files where speed isn’t as important, a smaller SSD around 160GB-256GB is a good idea to go for.

HEAT, ELECTRICITY, NOIS

HDD

•   use more electricity to rotate the platters generation heat and noise

SSD

• Since no such rotation is needed in solid-state drives, they use less power and do not generate heat or noise.

Components

HDD

- Contains moving parts - a motor-driven spindle that holds one or more flat circular disks (called platters) coated with a thin layer of magnetic material. Read-and-write heads are positioned on top of the disks; all this is encased in a metal case.

SDD

- has no moving parts; it is essentially a memory chip. It is interconnected, integrated circuits (ICs) with an interface connector. There are three basic components - controller, cache, and capacitor.

The benefits 

HDD

- The benefits of a hard disk drive are that they are a proven technology, are frequently less expensive than a solid-state drive for the same amount of storage. Currently, HDDs are also available with more storage space than SSDs.

SSD

- Solid-state drives deliver faster load times for games, applications, and movies. Because of the technology they use, SSDs are lighter and more able to withstand being moved and dropped. In addition, solid-state drives use less energy, keeping the computer they’re used in cooler.

FINAL OUTLOOK

- As we mentioned earlier, if you have the option then it may be worth getting a smaller SSD for your operating system and apps, along with an HDD to store your files. There are also hybrid drives, known as SSHDs, which offer the best of both worlds, with the speeds of SSDs and the capacities of HDDs in a single drive, and which are worth considering if you don’t have space in your device for multiple hard drives.

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