1.3 storage

1.3 storage

1. magnetic devices

   • has magnetic disks
   • can be read and written
   • contain moving parts
     • susceptible to damage
   • can be internal
   • can be external

2. solid state devices

   • no moving parts
   • retains an electronic charge
   • uses logic gates
   • examples
     • SD cards
     • USB memory sticks
     • also refers to flash memory

3. cloud storage

   • refers to saving data to an off-site location
   • it is maintained by another party
   • relies on having an internet connection
   • has cloud servers
     • you can upload and download files from them

4. comparing secondary storage

   • portability
     • how easily the device is transported
   • speed
     • how quickly the computer can read and write data from the device
   • capacity
     • the amount of space available to store files
   • durability
     • if the device can withstand a certain amount of damage
   • reliability
     • the length of time the device is expected to last for
   • cost
     • the cost of the device