Saturday, October 11, 2014

Introduction To Personal Computer Backup Solutions

By Jocelyn Davidson


Deduplication is achieved through the use of algorithms (which means elimination of duplicates) that can act at the level of single files or block level, which is a set of files. Personal computer backup solutions can be performed before, during or after the copying or deferred in relation to the normal operation of information systems.

Deduplication is useful, in particular for groups of files or file folders that need a full duplicate. The storage of media in physically separate locations is necessary, so that in the event of theft, fire, flood or other catastrophic event, copies may not be lost along with the original.

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).

Data recovery or salvage is an attempt to recover data needed when normal methods are impossible. For example, a hard-drive crash may still contain data. Specialists with special tools in controlled environments carry out the operation of data recovery: the damaged disk is opened in a room without dust. It is repaired as much as possible and most data is so often recovered. One of the main purposes of backups is to provide a basis for disaster recovery. To get a truly effective process you need to plan and carry out disaster recovery tests before the actual need arises.

Backup window is a period in which a system is available for copying. Related procedures can have an effect of slowing down the systems and network; some operations require that the primary use of system is suspended. These effects can be mitigated by agreeing on a reinforcement window. Backups policy is a set of rules in place to ensure that the process runs in a way that is appropriate to the needs of users or business organization. A policy defines the type (full or incremental), frequency (usually daily), and includes rules for checking compliance of restore process.




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