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Hard Drives and SSD

Hard Drives and SSD can generally be broken down to the following categories:

SATA stands for “serial advanced technology attachment.” Advanced technology attachment (ATA) was the previous form of the technology that was used in the parallel communication days. SATA replaces it.

SATA connectors, to which the cable hooks up SSD HDDs usually have more storage space, but SSDs are faster. An HDD must wait for the platter to rotate to the correct location before it reads or writes data.

SSD doesn’t have any moving parts that it needs to align, so its read/write speeds are uniformly faster. Both SSD SAS drives and SSD SATA drives are faster than their HDD counterparts. They have the same characteristics though: SATA is still faster writing data, while SAS is faster at reading and writing data continuously. SCSI Stands for , typically pronounced as “scuzzy”) and is a technology for transferring data from and to hard drives. A hard disk drive or solid state drive holds all of the data; files, photos, programs, music, and movies, that the user wants to keep. Removable, external media storage devices such as flash drives and read/writeable CDs and DVDs are also secondary storage. A computer can’t function without a storage drive, however.

SAS and SATA are two technologies that computers use to transfer data from the motherboard to storage, and vice versa. Both technologies do roughly the same thing, but each is built with different hardware.SAS is generally more expensive, and it’s better suited for use in servers or in processing-heavy computer workstations. SATA is less expensive, and it’s better suited for desktop file storage.

Hard Drives and SSD

Primary storage is also called the main or internal memory of the computer. This storage is accessed directly by the CPU and is where the main instructions for the computer’s operations are stored. The CPU can access these instructions and execute them as they are needed.

Primary storage is most often the RAM and the ROM, which will be discussed later in this chapter. The main function of the primary storage devices is to hold data for a short period of time while the computer is running and power is going to the devices. This data is removed once the power is stopped (like when the computer is shut down).