Secondary Storage

Secondary Storage

1. Optical storage

   • Disks are very small and light to make them very portable.
   • The storage capacity of the disks are relatively small compared to other storage devices.
   • Disks are very cheap to manufacture.
   • Disks are fairly durable, meaning the are safe to store data on for long periods of time.
   • Disks are fairly durable, meaning that they are safe to store data on for long periods of time.

2. Primary Storage

   • RAM and ROM are primary storage because they have direct contact with the CPU.
   • Rom stands for Read-Only Memory because the computer only reads from this memory and doesn't write it.
   • Ram stands for random access memory it is the place in a computer where all the programs and data are currently being stored.
   • ROM is non-volatile where as RAM is volatile.
   • A hard disk is a type of magnetic storage device inside a computer that is used to store data long term.

3. Magnetic Storage

   • Large storage capacity.
   • Fairly inexpensive to manufacture.
   • Fast access to read and write data.
   • Data can be lost or altered by magnetic field or mechanical problems
   • Can suffer wear and tare due to moving parts.