Journal Week #4 SYS - AinsleyPlayer/Journal GitHub Wiki

Selected sections of Chapter 7 from our A++ textbook: Storage Devices Overview Hard Drive Overview SSD Overview Hard Drive Interfaces Overview Hard Drive Preparation Overview (but ONLY look for the following definitions: cluster, sector, cylinder) Fault Tolerance

Memory is very important for computers, it defines how much information or content our device can hold, there is external memory such as a flash drive, and places to store information online in ‘the cloud’. Hard Drives are the most common storage spaces, they can hold more information than a flash drive, and are quite fast. SSD’s mostly use flash memory, which means less heat production, faster, more secure and are long lasting. SSD’s are in laptops, tablets, desktop computers and some smartphones. They can also be used with mechanical hard drives. Any industry from Medical, IT, Automotive, or even Industrial use SSDs, also, mechanical hard drives and SSDs data is written differently. SSD’s are pricey, they are expensive compared to hard drives. Hard drives have sets of rules they must follow to operate, the rules dictate how many heads are on the drive, what commands the hard drive responds to, number of data bits, etc. A cluster is the smallest amount of space needed for a single file and is made up by a specific number of sectors. A cylinder is the total of the same track number on every surface. A sector is the smallest unit that can be accessed on the hard disk, it's one of the ‘pie slices’. Fault tolerance is in place so if a computer’s disk has something happen to it, your other drives are okay to keep going and allow you to fix it/replace it.