- Even in a rare and unfortunate event when the Azure region is permanently irrecoverable, there is no data loss if your multi-region Cosmos account is configured with *Strong* consistency. In the event of a permanently irrecoverable write region, a multi-region Cosmos account configured with bounded-staleness consistency, the potential data loss window is restricted to the staleness window (*K* or *T*) where K=100,000 updates and T=5 minutes. For session, consistent-prefix and eventual consistency levels, the potential data loss window is restricted to a maximum of 15 minutes. For more information on RTO and RPO targets for Azure Cosmos DB, see [Consistency levels and data durability](consistency-levels-tradeoffs.md#rto)
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