The online manuals are also very help. Some people have not been able to restore their lost data due to one or both of the above information missing. I mean that you copied your data from one of the hard disks onto a removable disk, ie. This will greatly help in the event that the data on the media was lost somehow. One last note, please DO NOT count on the backups for safe keeping of your important data.
Backups are for emergency only.
Organize your data as if there are no backups. Always keep a copy of your own data. Almost all of these warnings are hoaxes and have little or no basis in fact. Please, do NOT mass forward it. Generally these messages will warn of dire consequences from even reading an email message.