The storage unit is a part of the computer system that is used to store the information and instructions to be processed. A storage device is an integral part of computer hardware that stores information/data to process the result of any computational work. Without a storage device, a computer would not be able to function or even boot. Or in other words, we can say that a storage device is a hardware that is used to store, transfer or extract data files. It can also store information/data both temporarily and permanently.
We need a storage device because RAM can’t store anything without power and we do want to be able to turn off our computer from time to time, we need a storage medium that retains its stored data, even without electricity.
There are two types
1. Portable HDDs
2. USB flash drivers
An HDD (which still has mechanically moving parts) is the slowest of the three and will usually read and save Data at about 100 MByte/s.
An SSD will already read and write at around 500 MByte/s, and an NVMe SSD currently reads and writes sequential Data with up to 10000 MBytes/s.
Both HDDs and SSDs are plugged into a SATA connector on your motherboard via a SATA Cable. They also need Power that they get through a SATA Power Cable from the PSU (Power Supply Unit, I’ll talk about that later!)
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