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Storage (Offline (USB (Universal Serial Bus :red_flag:, Don't require…
Storage
Offline
CD
One spiral track
Red laser
RW = read write
DVD
Duel-layering technology :red_flag:
One spiral track
Red laser
RW = read write
Blu-ray
Blue laser :red_flag: :
:large_blue_circle:
Store 5 times more than DVD
Secure encryption service
USB
Universal Serial Bus :red_flag:
Don't require additional software
Backwards compatible
Only used one way round
Sturdy
Removable hard drive
Same as fixed hard drives
Usually connect through USB port
Primary
ROM
Non-Volatile
Read only
Often holds start up instructions
DVD-RAM
Concentric tracks :red_flag:
Can be written to and read from
Ideal for DVD recorders
RAM
Volatile
Store data
currently being used
Can be written to and read from
Secondary
HDD
Disks covered in magnetic layer
Read and write data
Often store operating systems and applications software
SSD
Replacing HDDs
Control millions of transistors within a chip
No moving parts
:red_flag:
More robust
Consume less power
NAND flash memories :red_flag: