Backup Storage for Computers
A computer's internal storage is where its data and program files are stored. Most computers use magnetic disks to provide this storage. Backing up these disks to another storage source is critical to protecting the computer's data. There exists a variety of media choices to be used in performing these backups.
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Data Considerations
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Two factors need to be considered when choosing the type of backup storage to employ. These are the amount of data to be backed up and its long-term importance.
Portable Hard Drives
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A portable hard drive can be a good choice for backups because its capacity can be matched to that of the computer to be backed up. Data integrity is good but can be expensive, and this expense lessens the desirability of keeping multiple versions of backups, or of sending backups to a remote storage facility.
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Removable Disks
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There are various disk options such as Zip disks, CDs and DVDs. These are inexpensive solutions and can be stored easily. Many computers come equipped with CD or DVD burners eliminating the need to purchase new hardware to perform backups. Loss or damage to disks can be an issue when backing up critical data.
Flash Drives
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Flash drives are inexpensive and can be used for small backups. Their limited capacity makes them a poor choice for large or critical backups.
Tape Backups
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Backing up to tape can be the best choice for large amounts of data. After the initial expense of a tape drive, the tape media itself is relatively inexpensive and can handle large capacity backups. Tape has a long shelf life and is often used for long-term retention of critical data.
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