Every backup implementation leaves out something.
Historically this has been because good methods to back up all types of data have not been available. Attempting to rectify this, many companies have purchased products that they did not need, and others have purchased the wrong products. The main reason for this is that many system administrators simply do not know the options that are available to them, and the only source for this information is typically a vendor. This talk will explain the different types of data that must be backed up, and the native and public domain utilities that attempt to do so. This talk will also cover the limitations of such implementations, to allow the administrator to decide whether or not a commercial product is really necessary.