1.2 Memory and storage

Magnetic Solid-State Optical

SSD are faster to read/write then HDD… so the person may choose SSD if they want to read/write data quickly, SSD has no moving parts so it is more portable then a HDD… so the person may choose SSD if they are using a mobile device such as a mobile phone or a laptop, SSD are also more energy efficient then HDD as they have no moving parts whereas a HDD has moving parts SSD are robust so they can take more shocks/vibrations then HDD.. they are better for scenarios involving industrial machinery and vehicles

HDD usually cost less per GB then SSD so the person may choose to buy an HDD when they want to store lots of data that may not be accessed regularly

Secondary storage is long-term non-volatile so having secondary storage means that data can be stored on it that will be saved when power is lost

Solid State Drives (SSD) Secure Digital (SD) cards ROM chips

Fast access, Non-volatile, Robust, shock resistance Short lifetime, can only re-write a limited amount of times

Terminate processes, Install more RAM, Use secondary storage as virtual memory

Split sections on the memory

Virtual memory moves pages between the RAM and the secondary storage The page on the secondary storage is put into a special file called the pagefile, this means the freed space on the RAM can be used If we want to use the page again that is in the virtual memory, we move it back to the RAM by swapping it with a page that is already in the RAM that is not being used

Random Access Memory Read-only Memory Cache