It is a better plan to copy your data to a device that is physically located elsewhere. Fire or flooding at your premises will destroy your backup device as well as the original server. Simply copying the contents of one server onto storage media or another server kept on the same site might not be enough. After an initial copy of the server’s contents, any additions or alterations are rippled through to the backup immediately, making the copy a mirror server. Incremental backups are much quicker to perform. For example, it is more common in development environments to take complete periodic copies of all data in case a programmer makes an erroneous change to the software, causing data to be incorrectly adjusted.
The choice of the strategy that you will choose will depend on the stability of your environment. Backing up your data can take two forms: a series of periodic snapshots, or incremental updates to an initial copy. Despite the strong reliability of computing hardware, you need to consider the risk of failure either through environmental damage or malicious activity.
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