Hard Drives
The hard disk drive is the main tool for data storage in a computer. The operating system, software, and most other files are stored in the hard disk drive.
All primary computer hard drives are found inside a computer case and are connected to the motherboard using a SATA cable.
SSD - An SSD (Solid-State Drive) is much faster than a traditional, mechanical hard drive, though at the cost of data storage space. SSDs come exclusively in 2.5” form factor.
HDD - A HDD (Hard-Disk Drive) is a mechanical-based drive that uses an electromagnetic head to read and write to a spinning disk. The speed of a HDD is measured in Revolutions Per Minute (RPM.) The higher the RPM, the faster the hard drive (for eg. 7,200 RPM is faster than 5,400 RPM.)
Unlike hard disk drives, SSDs contain no moving parts. SSDs also have a lower latency than HDDs, and are therefore superior with storing data that needs to be accessed quickly, and for applications with a high read/write demand. However, SSDs are more expensive than HDDs from a price-per-gigabyte standpoint. Many modern computers use a mix of HDDs and SSDs to get the best of both (storage and speed.)
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