Create a backup of data in an electronic device such as a computer or a digital camera is very important. Much electronic equipment is intended to be a failure, leading to the elimination of all the details. Create a backup of data can not only shop but also an efficient recovery of data when necessary.

There are many backup devices, including floppy disks, hard drives, other network computers, CDs and DVDs. Each of these has its ownstructures, risks and opportunities. The use of these devices depends on several factors: the amount of stored data, the frequency at which data changes, the presence of other units and the nature of backup files must be saved.

CD-ROM are a kind of backup device removable. The CDs are increasingly used to store files, as they are cheap, easy to store, easy to carry, and has various storage capacities. Some CD-ROM may take up to 700 MB of data. They are also relatively safer than floppy or hard disk system. Data stored on a CD-ROM can not be changed. This makes it more suitable for permanent storage of data. There are other advantages of using CD-ROM to store backup data: they have a long life, is not affected by magnetic fields and can be taken through airport security without problems. But they are fragile and require careful handling.

> CD-ROM or DVD writers are now very cheap. A basic model is available at a price under $ 1000, while those with an optical drive is expensive. On that day, most backup software is compatible with a CD player and CDs – writers. There are many types and brands of backup software programs available. This is consistent with the basic configurations of Windows NT/2000. Prices range from $ 30 to $ 3,700 or more, depending on the opportunities andfunctions that are available. Veritas, Symantec, Acronis, Dantz and Stomp are some of the most popular brands of ROM backup software CD.

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