CHFI: Hard Disks & File Systems Latest 2024 Graded A+

CHFI: Hard Disks & File Systems Latest 2024 Graded A+ HDD (Hard Drive Disk) non-volatile, records data magnetically SSD (Solid State Drive) solid-state memory, uses microchips, expensive, supports a restricted number of writes over the life of the device Two memories: - NAND-based flash memory; (retains memory even w/o power) - Volatile RAM (faster access) Disk drive types - Magnetic storage devices (e.g., floppy disks, magnetic tapes) - Optical storage devices (e.g., Blue-ray disks, CDs, DVDs) - Flash memory devices electronically erasable programmable read only memory (e.g., USBs, MP3 players, digital cameras, SSDs) - HDDs - SSDs 1. NAND-based SSDs 2. Volatile RAM-based SSDs HDD: Main components - Platters the disks of the HDD, stacked on each other - Head on the arm of the HDD reads/writes on magnetic platters - Actuator moves the read/write head - Spindle