The Differences Between HDDs and SSDs.

Before purchasing your next server, it is important to review the differences between the two primary storage technologies: standard hard disk drives (HDDs) and solid state drives (SSDs).  Each technology has its own advantages and disadvantages, and the following guide provides a brief overview of each technology as well as a summary of their attributes.

Hard Disk Drives:

Hard disk drives are the standard storage technology most people are familiar with and are what you will find in most laptops and desktops. An HDD houses a series of magnetic platters that store data and are rotated by a small motor so that magnetic heads arranged on a small arm can read and write data to the platter surfaces. Because of all of this physical movement, HDDs are known as a mechanical data storage device.

Hard disk drives are a proven technology that has been around longer than the personal computer. Hard disk drives are relatively inexpensive when considering cost per gigabyte of data, and they are generally reliable and can last up to five years or more, depending on usage and duty cycle.  However, HDDs do have several disadvantages, and many of these stem from its mechanical nature. The first disadvantage is performance. The speed that the hard disk drive can write and read data is limited by the speed with which the hard drive platters can spin and how quickly the actuator arm can move, which makes it slower than purely electrical solutions. Secondly, because the HDD requires a motor to physically spin the platters and it has other moving parts, power consumption can be high.

In conclusion, HDDs are a good solution in situations where a lot of storage space is required for a relatively small investment, top-of-the-line performance isn’t required, and power savings is not a priority. Most modern servers make use of HDDs exclusively.

Solid-State Drives:

Solid-state drives are a data storage technology that uses integrated circuits as memory to store data. It is a purely electrical solution and does not have any internal moving parts.

Solid-state drives have many advantages over traditional HDDs. Because they have no spinning disks or other moving parts, they run quietly and require less power to operate. Also, thanks to their non-mechanical nature, SSDs have a lower access time and less latency, which translates to greatly increased performance over mechanical hard drives that can be invaluable for systems that are constantly accessing data.

SSDs do have a handful of disadvantages as well. They are much more expensive per unit of storage than HDDs, usually 7 to 8 times more costly.  Additionally, they have a reputation for not being as reliable as HDDs and have a limited lifespan, generally lasting only about half as long as HDDs.

In conclusion, solid-state drives are a must-have when high performance and/or energy efficiency is required and a low price per unit of storage and maximum reliability are not as important. As time passes, the price of SSDs is decreasing and their performance and reliability is only getting better, minimizing the concerns associated with the technology and increasing the advantages and benefits.

Advatronix® Systems allows you to custom build your server to meet your needs and expectations. By combining SSDs and HDDs in the storage subsystem, you can get the best of both world and create a computing server that delivers maximum performance and amazing reliability.

Please visit for more information.