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Solid State Disks (SSDs) come in a variety of shapes and sizes and they work in a totally different way to a conventional hard disk. Whether you're replacing a failed SSD or upgrading from a hard disk, these are things you may need to know about.

Summary

This page is in two main sections: firstly we discuss the different shapes, sizes and types of SSD, and then we explain how they work and hence how they need to be treated differently from a hard disk.

But first let's get one thing straight: a hard disk is no less solid than a Solid State Disk, and a Solid State Disk isn't even disk-shaped! (The only liqid state computer memory that has ever been used is the mercury delay line, and those went out of fashion in the 1950's!) An SSD would be better called electrostatic, or non-magneting storage.

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