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External drives for media storage

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External drives for media storage are:

CD- ROM (acronym for Compact Disc -Read Only Memory) are data storage devices on optical disks using compact – disc technology. The data is read with a laser -based system and not on magnetic media used for other data storage methods. Some CD- ROM drives (CD recorders) can be used for recording data on optical media.

CD - Compact Disc
CD – Compact Disc

Diskettes. Floppy disks with 3.5 inches in size. Floppy disk is a data storage medium selective for the user. Saving data on disk is performed by users for various reasons, such as creating backups of important files recording data that the user wishes to store the computer company, copying files to transfer to another computer, etc.

Floppy Disks
Floppy Disks

Backup disks. Information from backups created to avoid loss of information in case of a power outage are an important source for investigators. Same time with the lifting of backup discs must be recorded as much information on how are achieved the backups, especially the types of equipment, software and procedures used. Safety information is usually stored in large-capacity optical discs, for this purpose, such as the type Zip or Jazz disks, Iomega products, but may exist on any storage medium. Lately became very popular flash memories, very small in size, with large enough capacit.

USB drives (Flash drives)
USB drives (Flash drives)

Optical discs (most popular being the CDs) are high capacity storage media for digital data. The capacity of these discs is 650 Mb (CDs) to 4 GB (DVDs). Optical discs can be either normal (read only without the possibility of data recording), recordable (possible reading and writing data to disk without deleting data) , or with the possibility of rewriting (it is possible to read, writing and erasing data on the disc).

Removable hard drives are also information storage mediums. They have capabilities similar to the fixed hard drives, and are generally used to transfer large files.

Removable hard disks
Removable hard disks

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