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What is an IT backup?A backup is a restorable copy, kept separate from the original, that lets you return to an earlier state after a failure, an error or an attack.What is the difference between backup and replication?Replication copies the current state, errors included. Backup keeps earlier versions so you can restore a healthy state.What is the difference between backup and archiving?Backup gets the business running again. Archiving keeps a document intact for as long as the business or the law requires.What backup strategy for an SME?An SME first protects the systems people need to work, with an offsite history, an unmodifiable copy and a restore test.How long should you keep your backups?Keep a few weeks of backups to get back to work, and separate, longer-term archiving only for documents that must serve as evidence.How many backups should you keep?Keep at least three copies of your data, one offsite and one that cannot be erased, and enough dates to go back to before the incident.Where should you store your backups?Store one copy outside the building and outside the administration network, ideally encrypted and impossible to erase with everyday accounts.Should you outsource your backups?Yes, if a disaster or ransomware on your internal network must leave an intact copy. A local copy remains useful for restoring a file quickly.Why make an offsite backup?An offsite backup survives fire, flooding and an attack that encrypts everything reachable on the local network.How do you protect your backups against ransomware?Keep a copy off the network, block its deletion for a set period, separate accounts and check that a pre-attack version can be restored.What is an immutable backup?An immutable backup cannot be modified or deleted for a set period, even by an administrator. Definition, limitations and implementation.What is WORM storage?WORM (write once, read many) storage accepts a single write, then only reads, until the end of a retention period.Immutable backup: how long should data be retained?Against ransomware, lock for 30 to 90 days. For a legal obligation, lock for the period set by law, and only the documents concerned.How should you back up a physical server?Back up the image of the physical server, not just its files, and keep an offsite copy so you do not have to reinstall the system by hand.What backup do you need for a virtual machine?Back up a virtual machine with a tool that understands its state, and check that it restarts somewhere other than on the original hypervisor.How do you back up a NAS?A NAS is not a backup. Copy its shares and configuration elsewhere, or a NAS failure takes out the originals and the only copy.How do you back up Microsoft 365?Back up Exchange, OneDrive and SharePoint outside the Microsoft tenant, mailbox by mailbox, with a history the tenant admin cannot erase.How do you back up Google Workspace?Copy Gmail, Drive, Calendar and shared drives outside the Google domain, with a history independent of the recycle bins and Vault.How do you test that a backup works?A backup works if you restore a file, a database or a machine and the result is usable. A “successful” log is not enough.How can you tell whether a business is really protected against data loss?A business is protected if it can name its last successful restore test, the time taken, where the copies are and who holds the key.
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Encrypted offsite backup, immutable storage, DRP and BCP: tell us about your servers and we will recommend the right combination.