![]() ![]() Although the data may have been “backed up,” if it can’t be restored when it is needed then that backup is totally useless, and represents a possible disaster for the business. When it comes to tape restores, the failure rate is high (most estimates run from 40% – 70%). Backup restoration begins, and because the data is stored in linear fashion, it can take hours or days to rebuild the system that is, if a tape doesn’t fail and the backed up data is complete. A backup from physical tape takes valuable time to transport and reconstruct. Damage by fire, storm or other natural event is impossible to predict, and difficult to protect a physical system from. Whether from disk corruption, data theft, user error, viruses or hacking, data can be lost. The system crashes, disaster becomes a reality instead of a far distant situation that only happens to some other company, and suddenly that backup is needed. Even though it is economical and suitable for archiving rarely accessed data, a single tape has an approximate 30-year lifespan, or 250 full backups before it needs to be replaced, and the data moved to another tape. Monitoring and managing a tape backup library is not labor free. Physical tape as a storage medium was adopted by UNIVAC in the early 1950s, seventy years ago. Using physical tape for archiving or long-term storage can be problematic. What savings are realized by using a tape medium are negated by storage costs, transportation, and system downtime. A typical routine tape backup protocol usually involves regularly scheduled backups, followed by physically removing the tape or tapes to a secure storage location, usually offsite. When it comes to saving backups, tape technology often remains the given method, despite its vulnerabilities.
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