Back up is practice of duplicating data in order to keep the data safe from any issues such as loss of data due to computer virus infection, hard disk drive crash etc. There are different types of backup processes available that enables you to save important data to relevant backup storage media. (For information on backup storage Media you can refer to our Major types of Back up storage devices: section). There are different ways of creating back- up which are explained below.
Full backup: Full backup is one of the common types of backup done nowadays in order to keep possible data safe and retrievable in case on any adversities. This generally involves saving files from the existing storage media location to a location on another external storage media. For example files which are saved on hard disk drive of a computer can be backed up by saving them on tape drive or external hard disk drive.
However, it is said that tape drive is the best option for doing full backup. Full backup can be considered as the starting step of all types of backup. These types of backup contain data in form of files and folders. It is believed to be a faster and easier way for restoration operations. it should be understood that other types of backup takes longer time to restore. Evidently full backup is considered to be ideal as these are comprehensive solution for backup. Restoring is considerably faster but the time it takes to create a backup is higher. People who performs full backup for their system usually schedule the backup on weekly or monthly basis due to the time it consumes.
Full backup stores entire data of your system, hence if any trespasser gets access to the storage media he will have access to all possible data in the backup storage device. As said above the best part about full backup is that restoring can be done as faster pace but in the other hand the backing takes time and it requires significantly high amount of space to store all possible data of your system.
Differential backup: Another type of backup is differential backup which is different from full backup and incremental backup. This method is quite intricate as it contains data that have been changed since the latest full backup. This type of backup helps in performing restoration faster as compared to other backup type such namely incremental backup. If differential backup is performed numerous times then the size of the backup will be considerably larger than the full backup. You may find it confusing to differentiate between differential backup and incremental backup as the dissimilarity is intricate.
In case of differential backup the restoring is done faster as only two container files are requires; one is of full backup and latest differential backup. However, as compared to full back up the restoration is done slower. While you perform a Differential backup after full backup you may be actually storing files which have not been modified but were included in early differential backup. To your information performing restoration in Differential backup takes longer time as compared to full backup but faster than incremental backup. However, backing up can be done faster than in the case of full backup but it takes longer time than incremental backup. You may require relatively higher amount of storage space based on the data to be backed- up. However, in comparison with full backup it requires lesser space but higher storage capacity than that required in incremental backup.
Incremental backup: Incremental is the third type of backup process. In this type of backup you can create backup of only those files which have been modified since the latest backup. This type of backup option is useful in cases when not all the data in the backup location is usually modified but the backup is performed usually. It is believed that in this type of backup multiple backup is stored and not merely the latest performed backup. In this method performing backup is faster as compared to other modes of backup as it makes copy of those file which have not been stored as back up. For example, one performed a full backup on Monday and you are planning create a backup on Wednesday, then Wednesdays storage media will contain data which was modified since Monday. If again a backup is done on Saturday then it will contain all the data that has been changed since Wednesday. In case of incremental backup while performing a restore you need to first restore the latest full backup. Once you have restored the backup up then need to store each of the sequential incremental backup till the present day backup. In case any of the file of backup is damaged the restore will be incomplete.
Archive Backup:
Archive is a portal or space that usually keeps information related to different subject that you can access. In simple terms archive holds extensive amount of information and can be utilized to search a retrieve any particular subject from the included data. Data archiving is intricate and is offered by specialized service to competently archive files. File archiving is an added benefit over backup as it reduces cost involved especially for huge companies holding data in huge amount. File archiving is a smart way of data backup as it moves data according to its value. Specialized file archiving provides indexes to organize data efficiently. It also makes use of customized metadata tags by retrieving information from the available content. The type of backup provides quick and easy access to the archived information.
File archiving offers two noticeable features for data backup. First of all it offers faster backup and restore option reducing the impact of data loss and secondly, it offers file indexing or archiving to efficiently manage and manipulate the stored data. Due to its competency this facility is adopted by numerous organizations that holds extensive amount of data.
Off-Line: Off-Line storage is just a term which is used to refer to storage media which is not all the time connected to the computer. In off line storage a executor can perform any one the above mentioned back up types. An example of perfect off line storage is diskette or CD/DVD etc. The best part about these storage media is that these do not get affected by virus as these are not call the time connected to your system.
Online Backup Services: Another form of professional backup service is the online backup service which is also sometimes referred to as remote backup or managed backup. These backups are generally done by specialized companies which may help you to backup essential data. These services utilize a software program especially developed for their clients. This software collects data, reduces its size, encipher it and transfer the data to the storage media. This is done by the software on regular timely basis as scheduled by the administrator. The backup storage media is in a remote location and is generally access through internet.
