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DIGITAL STORAGE : HARD DRIVES ((Tracks, – Sectors, – Platters, – Form…
DIGITAL STORAGE : HARD DRIVES
a hard disk drive (HDD)
contains one or more inflexible, circular platters that
use magnetic particles to store data, instructions, and
information
The number of platters the hard disk contains
– The composition of the magnetic coating on the platters
– Whether the disk uses longitudinal or perpendicular
recording
– Density
the process of dividing the disk into
tracks and sectors
Tracks
– Sectors
– Platters
– Form factor
– Read/write head
– Revolutions per minute
A head crash occurs when a read/write head
touches the surface of a platter
• Always keep a backup of your hard disk
a flash memory
storage device that contains its own processor to
manage its storage
Faster access times
– Faster transfer rates
– Quieter operation
– More durable
– Lighter weight
Faster access times
– Faster transfer rates
– Quieter operation
– More durable
– Lighter weight
a separate freestanding
storage device that connects with a cable to a USB
port or other port on a computer or mobile device
A group of two or more integrated hard drives
Hard Drives
Formatting
Characteristics of a hard disk
SSD (solid state drive)
advantages
over traditional hard disks
external hard drive
RAID