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What is a Backup?

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  • What is a Backup?

    In the computing world, the term backup means to copy files of a storage medium to a another storage medium (a disk or tape) as a measure in case the first storage medium fails/crashes.

    Sometimes even the most reliable computer does not give desirable results. Often you might hear from people to keep 2-3 backs of your files. Also, these backup files should be kept at different locations. Taking backup should not be difficult as you get a provision in the operating system or freely available utilities. You can also buy a special back up software which has rich features. When you create a backup, the disk space required by the backup file is lesser than the sum of the disk space used by the actual files of which backup is taken. Most of the individuals and business seek for a back solution that provides data compression, removable media, automatic backups to offsite(remote) storage and automated scheduling to increase the reliability of the backups like creating a cron jobs for backups.

    There are many types of backups, each with its own features. Following are some famous backup types/techniques/methods.

    Full Computer Backup or Full PC Backup
    • This type of back creates an image of the entire hard drives of the computer.
    • With the help of Full Computer Backup or Full PC Backup, you would be able to restore the just the same state of computer when the backup was taken.
    • Its advantage is that you not only get your personal data like images, videos,documents,etc but also you get the operating systems files restored like system files, programs, drivers, etc.

    Full Backup
    • In Full backup methodology all the selected files and folders are backed up.
    • It is fast and easy as it restore the complete list of files which were backed up.
    • It takes more disk space as compared to differential or incremental backups.

    Incremental backup
    • Incremental backup methodology can be applied when we have to backup all changes made since the last backup.
    • Initially, one complete backup is done, after than subsequent backup are executed and stores only the changes made after the last backup.
    • The disk space required is much less than full backup and differential backups. Restoration process is slower as it requires to combine all the subsequent backups.

    Differential backup
    • This type backup focuses on all changes made since the last full backup.
    • Initially,one full backup and subsequent backup runs are the changes made since the last full backup.
    • The restoration is a much faster backup then a full backup for each backup run.
    • The storage space required is much less than a full backup but more then with Incremental backups.

    Offsite Backup
    • Offsite Backup implements the practice of keeping the backup storage media at a different geographic location from the source.
    • Here,backups may be taken on local end in the first go, but once the storage medium is brought to another location, it can be called as an offsite backup.
    • Other than the same feature provided by local backups, offsite backups provide additional protection from floods, fire, theft and other natural calamities.

    Online Backup
    • These are backups that are ongoing or done spontaneously to a storage medium which is always connected to the source being backed up.
    • A network or Internet connection is used to connect to the backup source to store the data on the storage medium
    • It does not require human intervention to plug in drives and storage media for backups to run.
    • Almost all the data centres and hosting providers like offers this service to the customers.

    Remote Backup
    • Remote backups falls under the umbrella offsite backups with a difference being that you can restore, access or administer the backups while located at your source location or other location.
    • Physical presence at the backup storage facility is not involved to access the backups.
    • Online backups are also usually considered remote backups as well.
    • You might want to take a look at R1Soft CDP Backup Plan for such services.

    Cloud Backup

    FTP Backup
    • File Transfer Protocol is used to the store the backups to an FTP Server using the internet.
    • Typically the FTP Server is located in a commercial data centre away from the source data being backed up.
    • If the FTP server is located at a different location, this would also fall under the umbrella of offsite backup.

    Mirror Backup
    • Local backups are as the name suggests a back is kept very close or in the same geographical location so that it would to be handy.
    • Such backup can be done on an external hard drive, secondary internal hard drive, CD/ DVD –ROM or Network Attached Storage (NAS).
    • It provides provision for gaining acess to the data deleted through an accident or intention.
    • These backsup are always close at hand so the restoration is fast and convenient.

    what ideas, comments and thoughts have you got about backups?

    Hayden Gill

    Cloud Backup |Backup Plans |Shared Hosting| Reseller Hosting | VPS Hosting | Cloud Hosting | Dedicated Server Hosting

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