In comparison, if any replica can process a request and distribute a new state, the system is using a multi-primary or multi-master scheme. When one leader replica is designated via leader election to process all the requests, the system is using a primary-backup or primary-replica scheme, which is predominant in high-availability clusters. Passive replication, which involves processing every request on a single replica and transferring the result to the other replicas.Active replication, which is performed by processing the same request at every replica.Ĭomputer scientists further describe replication as being either: In a failure scenario, a failover of replicas should be hidden as much as possible with respect to quality of service. The replication itself should be transparent to an external user. Īccess to a replicated entity is typically uniform with access to a single non-replicated entity. Replication in space or in time is often linked to scheduling algorithms. Replicated in time, where tasks are executed repeatedly on a single device.Replicated in space, where tasks are executed on separate devices.Computation replication, where the same computing task is executed many times.Data replication, where the same data is stored on multiple storage devices.Replication in computing involves sharing information so as to ensure consistency between redundant resources, such as software or hardware components, to improve reliability, fault-tolerance, or accessibility. ( October 2012) ( Learn how and when to remove this template message) Please help to improve this article by introducing more precise citations. It also offers rich compression, encryption, scheduling, recovery, and notification services - so that you can stop worrying and get back to business.This article includes a list of general references, but it lacks sufficient corresponding inline citations. SQL Backup Master comes to the rescue by providing an easy way to upload your database backups to one or more affordable (or free) cloud storage services. It can also back up databases to an FTP server - or a folder on your local machine, network server, or storage device.īacking up your SQL Server databases to the cloud shouldn't be complicated or expensive. SQL Backup Master backs up your SQL Server databases to any number of popular cloud storage services such as Dropbox, OneDrive, Amazon S3, Microsoft Azure, Box, and Google Drive.
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