Data are crucial for organizations, and they can’t risk losing them due to an eventual storage system failure. So much so, that additionally to data redundancy systems, companies implement backup systems, which make temporary copies of the data on additional media. That way, in the event of a serious failure of the business systems, backup data would be available for recovering business activity, without significant loss of information and without damaging the business.
The most common support used by these systems is magnetic tapes, which provide a sequential access mode to data. They are therefore less versatile than hard drives that provide a random access mode, but the cost of storage is lower.
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