Re:Fire declared in OVH SBG2 datacentre building
by numbsafari on Wednesday March 10, 2021 @06:22AM
(#26410120)
This is why you should have a “Cloud 3-2-1” backup plan. Have 3 copies of your data, two with your primary provider, and 1 with another.
e.g., if you are an AWS customer, have your back ups in S3 and use simple replication to sync that to either GCS or Azure, where you can get the same level of compliance attestation as from AWS.
So they might have their primary and replica databases at different DCs from the same hosting provider, and only their nightly backup to a different provider. Four copies to four different providers is a step above three copies with two providers!
A large enterprise would probably be using a filesystem with periodic snapshots, or streaming their redo log to a backup, to protect against a fat-fingered DBA deleting the wrong thing. Of course, filesystem snapshots provide no protection against loss of DC or wrongful hosting account termination, so you might not count them as true backup copies.