Part 09 – Additional Data Redundancy


We conclude this series on redundancy, as well as this module, with a discussion of additional data redundancy strategies. In many applications, the need exists to recover data quicker than is possible with standard data backups.

Also, depending on the frequency of those backups, it’s possible to lose a entire day’s worth of data. In many situations this is unacceptable.

The additional data redundancy methods discussed in this section are database shadowing, electronic vaulting, and remote journaling.

Database shadowing and remote journaling are concerned with backing up databases and their transactions. Situations where being offline for only a few minutes can be catastrophic for a company’s bottomline are those involving ecommerce.

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