Differences SSD, SSHD and HDD

An SSHD wants to combine the advantages of SSDs and HDDs. We clarify the differences between the three storage media.

The following principle has always been the case for hard disks for the PC: An HDD is recommended for large data collections, while on the SSD the operating system and a few programs or games find their place. But now a third medium is gaining more and more popularity: the SSHD. What are the advantages and disadvantages of the three memory disks, we will clarify in the following.

SSHDs (Solid State Hybrid Drive) are so-called hybrid hard drives that combine the advantages of SSDs and HDDs. Thus, the rotating magnetic disks with saturated capacity are preceded by a small flash memory, in which frequently used files and commands are stored. Theoretically, SSD-like access and load times should therefore be possible. This hybrid technology also has a second, positive side effect: it consumes less power, since often used data is already in the flash memory and the read and write heads and the magnetic disks do not have to start. This also ensures a longer life of the storage medium. The last point is the price: SSHDs are much cheaper than equivalent SSDs, but also somewhat more expensive than regular HDDs. So if you have a very limited budget, but do not want to be limited to a magnetic disk, then an SSHD is the right compromise for you. In terms of speed, the SSHD does not approach an SSD.

The flash drive in turn scores thanks to a completely silent operation, since no moving parts brings along. This makes this type of platform also very robust, which is a decisive advantage especially for mobile PCs such as notebooks or all-in-ones. However, besides these advantages, there are also some disadvantages: Thus, an SSD can not be described as often as the memory cells are subject to a certain wear and tear. In case of a possible defect is even more difficult to save the data than in HDDs. And, of course, the price also plays a role: compared to HDDs and SSHDs, SSDs are significantly more expensive and offer the same price often very little memory capacity.

This is why the traditional hard disk is often used when it comes to a new computer: No other medium currently offers so much storage space for comparatively little money. HDDs are therefore always used when large amounts of data have to find their place. And through the merger into a RAID network, the speed can be increased by a certain degree. But since HDDs work with moving parts, they are sensitive to vibrations. In addition, those parts can wear out quite quickly.


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