Advantages of remote backup

Remote backup has advantages over traditional backup methods:[2]
Perhaps the most important aspect of backing up is that backups are stored in a different location from the original data. Traditional backup requires manually taking the backup media offsite.
Remote backup does not require user intervention. The user does not have to change tapes, label CDs or perform other manual steps.
Unlimited data retention.
Some remote backup services will work continuously, backing up files as they are changed.
Most remote backup services will maintain a list of versions of your files.[3]
Most remote backup services will use a 128 - 448 bit encryption to send data over unsecured links (ie internet)
A few remote backup services can reduce backup by only transmitting changed binary data bits