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Oracle Data Guard

“Our recovery strategy has always been based on tape backups. We also set up Oracle Data Guard as a “nice to have” optional extra. Then we had a total SAN failure and a couple of months later a major disk corruption on another SAN, both indirect results of power outages. On both occasions Data Guard enabled us to recover without loss of data. Now I realize it's not “nice to have” – it's essential!”
Rachel Slade, Oxford Brookes University