secondary storage

secondary storage

1. fixed

   • ssd
     • store data using flash-based memory
     • Very fast
     • Silent
     • More resistant to physical shock
     • LESS POWER CONSUNTION
   • Hard disk drives
     • store operating systems, software programs and other files
     • Slower
     • Some noise from moving parts
     • More vulnerable to physical damage
     • Higher power consumtion
   • Internal Flash memory
     • an ideal storage medium for many modern devices such as tablets, smartphones and digital cameras.
     • Solid state
     • Direct access
     • More expensive per byte of storage than hard disk, magnetic tape, CDs and DVDs
     • 2 gigabytes upwards.

2. portable

   • optical disk
     • very cheap
     • fragile
     • slow
     • used by games consoles
   • usb stick
     • removable
     • light
     • rewritable
     • storage, data backup, and transferring files between devices.
   • microSD card
     • expand memory space and exchange pictures, music, or data with microSD compatible devices.
     • more space
     • light
     • small