Back up is a storage which stores a copy of every file on the computer and which stores every file copy in a computer. Back up is software which can back up your hard drive's data and save it in a safe place. It can save document and files which are important. This is even more important for organisations. Hospitals and banks, for example, store important, private information - and if that information became lost or corrupted, then lives and businesses could be at risk.
The devices for backing up:
Cloud Backup or Cloud Storage
USB Flash Drives
External Hard Drives
1. Manually copying files. 2. Software backup. 3. Mirroring (often known as RAID - Redundant Array of Inexpensive Disks). 4. Online or remove backup.