Storage Devices Flashcards
What is an HDD?
Hard Disk Drive. non volatile magnetic storage. Consists of rapidly rotating platters, also random access.
What parts make up an HDD?
Platter, Spindle, Head (of the arm), Actuator arm, actuator, IDE connector, jumper block, power connector
What is the downside of an HDD?
the mechanical components limit the access speed. also more fragile due to the moving parts.
What is the variation of speeds for hard drives?
- 15,000 rpm (latency 2ms)
- 10,000 rpm (latency 3ms)
- 7,200 rpm (latency 4.16 ms)
- 5, 400 rpm (latency 5.55 ms)
What is a common size for a desktop HDD?
3.5 inches
What is an SSD?
Solid State Drive. they have no moving parts and store data electronically. also non volatile memory. very fast performance.
What is AHCI?
Advanced Host Controller Interface is a technical standard that defines how a computers OS system communicates with with storage devices, particularly SATA devices.
What is NVMe?
Non Volatile Memory Express. is a protocol and interface designed for high speed communication between the CPU and the SSD.
What is an M.2 interface?
also known as a Next Generation Form Factor (NGFF) is a compact and versatile connector and mounting standards for adding storage and other expansion devices. Its commonly used for connecting SSD but can also be used for wi fi cards, bluetooth modules etc.
What are the different M.2 key types?
- B key
- M key
- B and M key
What is a Flash drive?
also known as a USB drive. its a portable storage device that uses flash memory technology to store and transfer digital data.
What is a EEPROM?
Electrically Erasable Programmable Read Only Memory. this is what a USB drive is.
What is an Optical Drive?
an outdated form of storage. also known as an ODD (Optical Disk Drive). relatively slow and mostly used for archival purposes. Uses laser technology to read and write data. There are different formats of optical drives such as CD Rom, Blu Ray etc
