by: James Wallis
Unless the backup is updated, this is accompanied by a sinking feeling as we realise that certain parts of the data are gone for good.
Data loss is a classic example of a preventable disaster, and we have no one to blame except ourselves in the aftermath.
What is Data Backup ?
How do we remember the phone numbers of all the people we know? We can’t memorize it all. So we can note it down in a diary. What if this diary is lost? It would either take us days to get back everything again, or we wouldn’t be able to complete the list at all. Most people use both their cell phone memory as well as a physical phone book / notepad. The process of creating a copy of necessary information at another location is called taking data backup. We save some data only if it is needed, so it makes sense to ensure what we saved remains intact. Backup, then, consists of the following steps:
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