Secondary Storage

Description

Computing
izzykersley01
Mind Map by izzykersley01, updated more than 1 year ago
izzykersley01
Created by izzykersley01 over 10 years ago
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Resource summary

Secondary Storage
  1. Stores data and programs when the power is switched off
    1. Magnetic Hard Disk
      1. Stores the operating system, installed programs and user data
        1. Reliable
          1. High capacity
            1. Low Cost
            2. Optical Disk
              1. Transfers files or distributing software
                1. Good capacity
                  1. Low cost
                    1. Lightweight and portable
                      1. A CD can store 700 MB and DVD can store 4.7 GB
                      2. Flash Memory
                        1. Consumes little power
                          1. Good capacity (but less than a hard disk)
                            1. Used in hand held devices
                              1. More expensive than a hard disk
                              2. Main considerations when selecting storage
                                1. Capacity
                                  1. Speed of data transfer
                                    1. Portability
                                      1. Durability (how easily it's damaged)
                                        1. Reliability
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