Tape Storage.
A "Full Backup".
If you have a backup copy somewhere, you can recover data from that backup copy. Obviously the backup must have been made BEFORE the computer was stolen. It also helps to make those backup copies regularly, so you don't lose much data. Otherwise - if you didn't do a recent backup - you can't do anything.
it does not take the music off it just copies it into a folder in your computer which is legal to keep a backup of a CD you buy.
Totally depends on the backup methodology and the rotation scheme. I have a couple of clients that backup everything everyday and keep the tapes for two weeks. They have 14 copies. Other's backup everything (or changed data in some cases) everyday, and keep the daily copies for two weeks, but keep the weekly tapes for months. There could be 30-40 copies in those cases.
Yes if you have copied and thus created a backup on your flash drive it is safe to delete them off your computer, but I would recommend keeping them there so you have two copies of them in case something happens to on of the copies.
A full backup will make a replica of every file currently on the system and store it, usually in a compressed file, for later use if there is a problem. A full backup takes no account of changes made to files since the last backup - it simply copies everything. Therefore it is sensible to only carry out a partial backup if you are short of time or hard drive space.
One might need remote data backup software to ensure files are copied and accessed when the user is away from the main computer or drive. Remote data backup software copies and stores data in alternate locations, such as cloud storage.
backup
backup
To supply a backup in case the original is destroyed.
You can legally backup all the software on your computer. One way is to back it up onto tape. Another way is to clone the hard drive to a separate hard drive. You can also create copies (or backups) of CDs that contain software, such as Microsoft Office CDs, or Quicken finance CDs. You may not sell or give those CDs away, but only use them for archive or backup purposes.
"Copias de seguridad" translates to "backup copies" or "backups" in English.