DATA STORAGE MEDIA

DATA STORAGE MEDIA
• There are several types of data storage media on the computer system
• Data storage is distinguished by:
• Speed Data Access
• The price of Media Storage
• Reliability of the Media Storage


GENERAL INVESTMENT PHYSICAL MEDIA STORAGE
Media storage of information in the computer system is divided into 2 main types:
• Storage Primary / Primary Storage
Features:
o high-speed access
o The price is expensive relative
o Capacity relative small
o Volatile
• Storage secondary / Secondary Storage
Cirri-characteristics:
o low-speed access
o The price is cheap relative
o Capacity of relative
o Non-volatile

EXEMPLARY MEDIA STORAGE
Some examples Media Storage:
• Memory Cache
• Main Memory
• Flash Memory
• Magnetic Disc Storage
• Optical Storage
• Tape Storage
Cache MEMORY
• Memory Chache have access to the data quickly.
• Cache Memory storage is the most expensive
• Capacity Memory Cache most Small (eg 256 KB - I MB)
• Having a volatile nature
• Cache memory is usually located on the Have
• Usually processor will search the data in the cache memory before the data search data main memory.
• Usually the data is located in the cache memory is data that are often read in
MAIN MEMORY (RAM
• A data storage on computers operate
• The price is still relatively expensive
• Capacity is relatively small (eg 64 MB - 1 GB)
• speed access to relatively more quickly
• Has volatile
FLASH MEMORY
• A data storage that many used at this time
• Using a way of working EEPROM (electrically eraseable Programmable read only memory)
• Capacity is relatively smaller than the large main memory
• Non-volatile
• relatively slower speeds
than the main memory
Magnetic-DISC STORAGE
• Capacity relatively large (1 GB - 100 GB)
• relatively slow speed
• Relative Price More cheap
• Non-volatile
• A storage media
The most widely used
Optical Storage
• Data storage disk replacement (easy-check)
• Capacity relatively large (1-chip CD can store up to 640 MB, 1-chip DVD can store up to 1.7 GB)
• relatively slower speeds
• Prices are relatively cheaper
• Non-Volatile
TAPE STORAGE
• Capacity is very large (40 GB - 400 GB)
• speed access at the latest
• Non-Volatile
• Prices are cheaper
• Ordinary used to back up data

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