We always talk about hard drives in general, but there are
several types. Specifically, it is often referred to as HDD or SSD . These hard
drives present substantial differences in their physical characteristics and
also in their price, so it is important to pay attention to them.
A hard drive is not only important when it comes to buying a
computer or changing a hard drive. The type of server hard drive offered by our
web host is also important. There are hard drives with a higher reading and
writing speed than others, so their performance is higher.
Types of hard drives: HDD or SSD
Technically, the main difference between hard drives comes
when we talk about HDD ( Hard Disc Drive ) and SSD ( Solid State Drive ), where
some have a mechanical operation, are large and heavy and the other work
without mobile drives and have better performance .
Let's see what each one consists of and if it is better to
choose HDD or SSD disks.
What are SSD disks?
SSD ( Solid State Drive ) disks , also called solid state
drives, are modern and advanced hard drives. They are not mechanical, that is,
they do not have moving parts like hard drives. These components have a board
and use a memory made up of semiconductors, just like USB memory sticks and
digital cameras.
Their main advantage over hard drives is that they have
higher data reading and writing speeds . They are, therefore, more efficient
and last longer. Being non-mechanical, on the other hand, they also make less
noise during operation.
They are the ones that are usually used in many servers,
since they allow a higher performance of the hosted websites. Also many modern
computers include SSD drives.
What are hard drives or HDD?
In contrast, HDD or Hard Drive Disks are rigid hard drives.
They usually come in 3.5-inch formats, if they are for desktop computers, or
2.5 for laptops. To give you an idea, this would be an image of an HDD with all
its parts.
Its main advantage is its capacity, somewhat higher than
that of many SSD disks. In computers with a hard drive, we can find capacities
of up to 4 terabytes for desktop computers and 2 TB for laptops. However, you
can also find some SSD disks that reach the capacity of 4 TB for personal
computers, like this one that Samsung has released, as well as other
server-oriented models, which can reach up to 16 TB.
The big drawback of SSDs with such capacity is that they
have a very high price. Hence, those who bet on a 4 TB disk sometimes prefer a
hard disk, despite its drawbacks.
SATA data transfer interface
You will find many stores that sell computers with SATA hard
drives, without specifying very well what it is. Technically, the SATA standard
is not a type of hard drive, rather it refers to the data transfer interface it
uses. There may be SATA hard drives and SSD drives with SATA connection.
What is a data transfer interface? The interface is simply a
physical connection between devices and systems. Computers need an interface to
transmit data between the motherboard and the various storage units of the
computer. These include the hard drive and the CD or DVD drive. One of the
possible interfaces that many hard drives today carry is SATA.
Hard drives that are classified as SATA ( Serial Advanced
Technology Atachment ) are single-channel transfer devices and have become very
popular since their appearance in the 2000s. They are used in both laptops and
desktop computers. There are disks of the series SATA I, SATA II and the most
modern version, SATA III. The latter come to make a transfer of 600 MB / s,
while the SATA II series was 300 MB / s and the SATA I at 150 MB / s.
If we talk about its topology or architecture, we have to
say that SATA is "point to point". It means that a direct connection
is made between the port and the device, contrary to the old IDE (Integrated
Device Electronic) transfer interface , where the interfaces were separated
between masters and slaves, now totally obsolete.
Change hard drive?
You may be wondering if the spell has come to change the
hard drive on your computer to get more speed. Or maybe you don't know whether
to choose an HDD or SSD hard drive.
In other cases, you already have SSD disks, but you are
using a transfer interface, such as SATA and you think that you are not making
good use of your hard disk, which is still insufficient compared to some of its
newer alternatives.
Surely you know that in recent times other more modern and
efficient transfer interfaces have come out, which pose a challenge for the
SATA connection standard, such as the PCIe and M.2 interface with SSD disks ,
which allows a better leveraging solid state drives.
Do you use HDD or SSD disks? If you have enquiries near
which type of hard drive is the most suitable for you, or you want to change
your hard drive, we invite you to contact our computer maintenance service in
Madrid .
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