2 or more different media should be used to eliminate data loss due to similar reasons (for example, optical discs may tolerate being underwater while LTO tapes may not, and SSDs cannot fail due to head crashes or damaged spindle motors since they don't have any moving parts, unlike hard drives). It states that there should be at least 3 copies of the data, stored on 2 different types of storage media, and one copy should be kept offsite, in a remote location (this can include cloud storage). The 3-2-1 rule can aid in the backup process. The scheme determines how and when each piece of removable storage is used for a backup operation and how long it is retained once it has backup data stored on it. The backup data needs to be stored, requiring a backup rotation scheme, which is a system of backing up data to computer media that limits the number of backups of different dates retained separately, by appropriate re-use of the data storage media by overwriting of backups no longer needed. The repository could be as simple as a list of all backup media (DVDs, etc.) and the dates produced, or could include a computerized index, catalog, or relational database. There are limitations and human factors involved in any backup scheme.Ī backup strategy requires an information repository, "a secondary storage space for data" that aggregates backups of data "sources". Backup schemes may include dry runs that validate the reliability of the data being backed up. Additional techniques apply to enterprise client-server backup. The process can include methods for dealing with live data, including open files, as well as compression, encryption, and de-duplication. There are also different ways these devices can be arranged to provide geographic dispersion, data security, and portability.ĭata is selected, extracted, and manipulated for storage. There are different types of data storage devices used for copying backups of data that is already in secondary storage onto archive files. An information repository model may be used to provide structure to this storage. The data storage requirements can be large. Ī backup system contains at least one copy of all data considered worth saving. Backups provide a simple form of disaster recovery however not all backup systems are able to reconstitute a computer system or other complex configuration such as a computer cluster, active directory server, or database server. Backups can be used to recover data after its loss from data deletion or corruption, or to recover data from an earlier time. The verb form, referring to the process of doing so, is " back up", whereas the noun and adjective form is " backup". In information technology, a backup, or data backup is a copy of computer data taken and stored elsewhere so that it may be used to restore the original after a data loss event. For other uses, see Backup (disambiguation). With SIRIS you have your original data on your servers, a local backup on to the Datto SIRIS appliance and a third offsite backup in the Datto cloud.This article is about duplicate data in computer systems for data recovery. Solutions such as Datto SIRIS, which is an all in one BCDR solution, create both a local and offsite backup in the Datto Cloud. They both have their pros and cons which is why deploying a BCDR Solution that does both is essential for businesses to drive business continuity. it’s not about onsite or offsite-you need to have both. When it comes to choosing a backup solution. Sometimes an automated software package will be used to automatically perform the backup process. They provide protection for disaster recovery, especially if the business relies heavily on computers.Īn onsite backup typically includes all important data that has been saved to local media such as tapes, or hard disks. Local backups are useful for protecting data from natural disasters, theft, or other types of disaster. This type of backup is typically done on the business premises. Learn more about disaster recovery > What is an Onsite Backup?Īn onsite backup is a system backup of data that is stored locally. Having an offsite and onsite backup is key to ensuring business continuity and planning for disaster recovery. The core goal of an offsite backup is to have a secondary location where the data is located, so if there is a fire at the original location then the secondary backup will be safe. Offsite backup solutions have been used for decades as a way to protect data from potential disasters like fires, natural disasters, and other unforeseen events. Offsite backups are a type of data protection that provides a copy of a business' production system data, which is stored in a different location from where the original data is stored.
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