What is replica set in MongoDB?
A replica set in MongoDB is a group of mongod processes that maintain the same data set. Replica sets provide redundancy and high availability, and are the basis for all production deployments. This section introduces replication in MongoDB as well as the components and architecture of replica sets.
What is difference between replica and backup?
Backup involves making a copy or copies of data and storing them offsite in case the original is lost or damaged. Replication is the act of copying data and then moving data between a company’s sites, whether those be datacenters, colocation facilities, public, or private clouds.
Is it necessary to remove a database from a replica?
In the end, removing a database from a replica in an Availability Group (and then adding it back) is probably not something you will need to do on a regular basis. This is a process worth practicing in a test environment at least once, so you’re comfortable with it should the need arise.
Can a user access the back end of a backup?
Notify users before you start the backup process because running the backup process requires exclusive access to the database file, and users might be unable to use the back-end database while the backup process is running. To open only the back-end database, start Access.
Can a cloning disk be used as a mirror backup?
Disk cloning does create an exact replica of your hard drive, but it is not the same as a mirror backup. Mirror imaging software creates a single, compressed file that can be used for backup and disaster recovery purposes.
What do you need to know about full image backup?
A full image backup, or mirror backup, is an exact replica of everything on your computer’s hard drive, from the operating system, boot information, apps, and hidden files to your preferences and settings. Imaging software not only captures individual files, but everything you need to get your system running again.