HDDs vs SSDs

HDDs vs SSDs


A HDD, or Hard Disk Drive, is the main data storage hardware device in a computer. They store files such as videos and photos, the computer operating system and software. Physically, a 3.5” HDD is the size of a book, although it can come in smaller sizes such as 2.5” and has a port for a cable which connects it to the motherboard.HDDs

It consists of a large plate of magnetic material, called a ‘platter’. This platter stores all your data. It spins, which allows the read-write arm to read the data on the disk as it passes. The speed the platter spins at affects the speed the hard drive works at. For example, the faster the platter spins, the faster it works and therefore the faster the operating system of the PC can run.

HDDs are non-volatile storage, unlike RAM, which means that a hard drive can keep hold of the data it stores even when the PC has been powered off. This is the reason why, even if you turn a computer off, you can retain all the data when you turn it back on.

An important characteristic of a hard drive is its capacity. The less storage space on the hard drive, the faster it will fill up with files. HDDs that have higher capacity can handle and store more data.



SSDs are Solid State Drives and are newer storage technology. Rather than using magnetic material like HDDs, SSDs have circuitry made fully of semiconductors. This is one of the main differences between HDDs and SSDs.SSDs

SSDs use the same type of memory chip as USB drives which allows them to retain information even when there is no power. The difference is that USBs are designed to be external to the computer system, whereas SSDs are designed to be placed internally. They can be used in place of the more traditional storage of HDDs. SSDs look similar to HDDs, but to replace one with the other, they must have the same dimensions.


HDDs vs SSDs

HDDs are a great choice if you need to store lots of large files such as photos, videos and games, and are best if you want more capacity for a lower price. However, as it works using moving parts, they can be very fragile. Small jarring movements in the device can break the drive.


As SSDs don’t use moving parts, it means that there are less parts that can get damaged. Additionally, it also means that they use less energy to work than the regular hard drive. Furthermore, no moving parts means the speed of the SSD is not dependent on the RPM, but on the connection of the drive. The data on an SSD can be read quicker than on a HDD. Although from this it sounds like SSD is a clear winner, they have a limited life span. They have a fixed number of write cycles that can be done before the cells become unusable. They are also expensive.


In conclusion, both HDDs and SSDs have their advantages, but it depends on what you are using them for. If you need any advice on what you require, please call us at servers and spares on 0113 8805 440. We stock both HDDs and SSDs and with extensive product knowledge, our sales team are happy to help!