Merge pull request #102067 from yegu-ms/master

Clarified Redis persistence storage

Author: PRMerger16

articles/azure-cache-for-redis/cache-how-to-premium-persistence.md

@@ -20,7 +20,13 @@ Azure Cache for Redis offers Redis persistence using the following models:
 * **RDB persistence** - When RDB (Redis database) persistence is configured, Azure Cache for Redis persists a snapshot of the Azure Cache for Redis in a Redis binary format to disk based on a configurable backup frequency. If a catastrophic event occurs that disables both the primary and replica cache, the cache is reconstructed using the most recent snapshot. Learn more about the [advantages](https://redis.io/topics/persistence#rdb-advantages) and [disadvantages](https://redis.io/topics/persistence#rdb-disadvantages) of RDB persistence.
 * **AOF persistence** - When AOF (Append only file) persistence is configured, Azure Cache for Redis saves every write operation to a log that is saved at least once per second into an Azure Storage account. If a catastrophic event occurs that disables both the primary and replica cache, the cache is reconstructed using the stored write operations. Learn more about the [advantages](https://redis.io/topics/persistence#aof-advantages) and [disadvantages](https://redis.io/topics/persistence#aof-disadvantages) of AOF persistence.
 
-Persistence is configured from the **New Azure Cache for Redis** blade during cache creation and on the **Resource menu** for existing premium caches.
+Persistence writes Redis data into an Azure Storage account that you own and manage. You can configure from the **New Azure Cache for Redis** blade during cache creation and on the **Resource menu** for existing premium caches.
+
+> [!NOTE]
+> 
+> Azure Storage automatically encrypts data when it is persisted. You can use your own keys for the encryption. For more information, see [Customer-managed keys with Azure Key Vault](/azure/storage/common/storage-service-encryption?toc=%2fazure%2fstorage%2fblobs%2ftoc.json#customer-managed-keys-with-azure-key-vault).
+> 
+> 
 
 [!INCLUDE [redis-cache-create](../../includes/redis-cache-premium-create.md)]