OBJECTIVE:- -Differentiate between storage media and storage devices -Describe the characteristics of an internal hard disk including capacity, platters, read/write heads, cylinders, sectors and tracks, revolutions per minute, transfer rate, and access time -Discuss the purpose of network attached storage devices, external and removable hard disks, and hard disk controllers -Describe the various types of flash storage -Describe cloud storage and explain its advantages -Describe the characteristics of optical discs -Differentiate among various types of optical discs: CDs, archive discs and Picture CDs, DVDs, and Blu-ray Discs -Identify the uses of tape, magnetic stripe cards, smart cards, microfilm and microfiche, and enterprise storage STORAGE MEDIA AND STORAGE DEVICES Storage Media:- -A physical material on which a computers keep data ,instructions and information.For example:Hard disk,microfilm,solid state drive Storage Devices:- -A computer hardware that records or write items to and from storage media Hard Disk -contains one or more inflexible ,circular platters that use magnetic particles to store data,instruction and information.It can use perpendicular recording or longitudinal recording.
CAPACITY -Number of bytes a storage medium can hold STORAGE DEVICE -A computer hardware that records and/or retrieves item to and from storage media -READING is the process of transferring items from a storage medium into memory -WRITING is the process of transferring items from memory to a storage medium ACCESS TIME -The amount of time it takes a storage device to locate an item on a storage medium -The time required to deliver and item from memory to the processor NETWORK ATTACH STORAGE (NAS) -A server connected to a network with the sole purpose of providing storage
TYPE OF FLASH STORAGE
CLOUD STORAGE- -An internet service that provides storage to computer users
CHARACTERISTICS OF OPTICAL DISC
OTHER TYPE OF STORAGE:-
0 Comments
Leave a Reply. |
Archives
October 2016
Categories |