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But that's on a single RAID in a single location. You'd probably need at least one failover, and backups for that as well, if you'd like to target higher availa

But that's on a single RAID in a single location. You'd probably need at least one failover, and backups for that as well, if you'd like to target higher availability / durability. S3 keeps multiple copies in multiple geographic locations.

jlokier 3y ago
When you are distributing over multiple geographic locations, and much of the data can tolerate a longer round trip time for access, you can extend the RAID pattern across multiple locations, instead of within a location. Provided you have enough network bandwidth for recovery, you don't need a full RAID at each individual site. Having more locations is actually helpful for this. Because of the independence of different locations, the risk of data loss is in some ways lower than a local RAID system where all drives might be fried at the same time by a single event.