In computing, the term backup indicates replication on any storage medium of data inside the physical memory of computers, whether they are a workstation or server. Personal computer backup solutions are necessary to prevent the permanent data loss in the event of accidental, intentional or malicious loss. It is therefore a measure of physical redundancy of data, which is typical of disaster recovery procedures.
There are several types of media that can be used for backup: CD-ROM: The advantage is that it is a cheap media with fast read access. The disadvantage is mainly that capacity is low. DVD: There are larger capacity than a CD-ROM. A USB stick has a large capacity and is cheap. On the other hand, the very large units are quite expensive to buy. Online Backup: The advantage is that the backup file is stored outside the house.
The data is encrypted and then transmitted over an encrypted tunnel on the Internet to a professional data center. Benefits include large capacity and low cost of ownership and require no special hardware. You should ensure that data is adequately encrypted (448 bit is currently the highest), and the information is encrypted both during transport and storage. An online copy is stored on a server accessible via the Internet. An online variant allows you to restore data without any equipment other than an Internet connection.
The media on which the copying is performed must be approved for the procedure, and they must be regular checks and replacements. They must also be kept in accordance with corporate security policies, for example, but not limited to privacy issues. Several new services on the internet allow you to back up accounts and data of users of social networks.
Full backups entail backing up of all files on the system. Unlike the disk image, a full copy does not include the allocation tables, partitions and boot sectors. Differential backups involve copying of all changes made since the last full copy. The advantage is the reduced time compared to a full and incremental copy. The disadvantage is that the data to be saved for each day increases since the last copy.
There are amateurs among suppliers and it is a service that does not shed much. Some solutions are amateurish while others are well planned. It is a good idea to perform regular backups even in personal computers, which are usually performed by the user by copying important data on magnetic or optical media (CD-R, CD-Rewritable, DVD-R, rewritable DVD, Digital Audio tape, tape cartridges).
For companies, an important feature of backup is that this activity is not going to overlap with the daily operations, uploading computer systems and slowing response times for users. For this reason, various systems are implemented at night, when users do not normally work. To increase the speed of backups, usually one or more of procedural guidelines are applied. Differential reserve is based on an algorithm that compares data of a file to be copied with the already copied, recording only the differences and forfeiting when there is none.
There are software packages that deal with identifying, through criteria, the new file to be archived and immediately perform the backup. Even the handhelds and smartphones have become important tools for the workers because they contain basic information such as the phone book and calendar appointments, have therefore become a good idea to extend the backup to these instruments.
There are several types of media that can be used for backup: CD-ROM: The advantage is that it is a cheap media with fast read access. The disadvantage is mainly that capacity is low. DVD: There are larger capacity than a CD-ROM. A USB stick has a large capacity and is cheap. On the other hand, the very large units are quite expensive to buy. Online Backup: The advantage is that the backup file is stored outside the house.
The data is encrypted and then transmitted over an encrypted tunnel on the Internet to a professional data center. Benefits include large capacity and low cost of ownership and require no special hardware. You should ensure that data is adequately encrypted (448 bit is currently the highest), and the information is encrypted both during transport and storage. An online copy is stored on a server accessible via the Internet. An online variant allows you to restore data without any equipment other than an Internet connection.
The media on which the copying is performed must be approved for the procedure, and they must be regular checks and replacements. They must also be kept in accordance with corporate security policies, for example, but not limited to privacy issues. Several new services on the internet allow you to back up accounts and data of users of social networks.
Full backups entail backing up of all files on the system. Unlike the disk image, a full copy does not include the allocation tables, partitions and boot sectors. Differential backups involve copying of all changes made since the last full copy. The advantage is the reduced time compared to a full and incremental copy. The disadvantage is that the data to be saved for each day increases since the last copy.
There are amateurs among suppliers and it is a service that does not shed much. Some solutions are amateurish while others are well planned. It is a good idea to perform regular backups even in personal computers, which are usually performed by the user by copying important data on magnetic or optical media (CD-R, CD-Rewritable, DVD-R, rewritable DVD, Digital Audio tape, tape cartridges).
For companies, an important feature of backup is that this activity is not going to overlap with the daily operations, uploading computer systems and slowing response times for users. For this reason, various systems are implemented at night, when users do not normally work. To increase the speed of backups, usually one or more of procedural guidelines are applied. Differential reserve is based on an algorithm that compares data of a file to be copied with the already copied, recording only the differences and forfeiting when there is none.
There are software packages that deal with identifying, through criteria, the new file to be archived and immediately perform the backup. Even the handhelds and smartphones have become important tools for the workers because they contain basic information such as the phone book and calendar appointments, have therefore become a good idea to extend the backup to these instruments.
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