A Data Backup consists of making additional copies of your data that can be used in the event of data loss.
Typically data loss occurs due to:
- Human error
- Hard Drive failure
- Hard Drive Loss or theft
- Natural Disaster (i.e. hurricane or fire)
In order to recover your data, you need to have a recent backup of your files. Hence, a backup is a tasks that needs to be performed on a regular basis. The frequency in which you backup data will depend on the frequency in which your data changes.
You have the option of doing a local backup, an off-site backup, or both.
Local backups have the advantage that they are cheap and recover quicker because there is no need to download the backup. The disadvantage of a local backup is that it does not protect against natural disaster, loss or theft.
Online backups have the advantage that they protect against natural disaster, loss, and theft. However, online backups typically have a monthly recurring fee and backups need to be downloaded from the internet.
The best backup is typically a strategy which combines an on-line solution with a local backup.