Merge pull request #185077 from flang-msft/priv-persistenc-geo-replication

flang-msft - Priv-persistence-geo-replication

Author: PRMerger4

articles/azure-cache-for-redis/cache-how-to-geo-replication.md

@@ -27,6 +27,7 @@ To configure geo-replication between two caches, the following prerequisites mus
 - Both caches are in the same Azure subscription.
 - The secondary linked cache is either the same cache size or a larger cache size than the primary linked cache.
 - Both caches are created and in a running state.
+- Neither cache can have more than one replica.
 
 > [!NOTE]
 > Data transfer between Azure regions will be charged at standard [bandwidth rates](https://azure.microsoft.com/pricing/details/bandwidth/).
@@ -84,6 +85,9 @@ After geo-replication is configured, the following restrictions apply to your li
 
     The primary linked cache remains available for use during the linking process. The secondary linked cache isn't available until the linking process completes.
 
+[!NOTE]
+> Geo-replication can be enabled for this cache if you scale it to 'Premium' pricing tier and disable data persistence. This feature is not available at this time when using extra replicas.
+
 ## Remove a geo-replication link
 
 1. To remove the link between two caches and stop geo-replication, click **Unlink caches** from the **Geo-replication** on the left .

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

@@ -93,6 +93,7 @@ The following list contains answers to commonly asked questions about Azure Cach
 
 - [Can I enable persistence on a previously created cache?](#can-i-enable-persistence-on-a-previously-created-cache)
 - [Can I enable AOF and RDB persistence at the same time?](#can-i-enable-aof-and-rdb-persistence-at-the-same-time)
+- [How does persistence work with geo-replication?](#how-does-persistence-work-with-geo-replication)
 - [Which persistence model should I choose?](#which-persistence-model-should-i-choose)
 - [What happens if I've scaled to a different size and a backup is restored that was made before the scaling operation?](#what-happens-if-ive-scaled-to-a-different-size-and-a-backup-is-restored-that-was-made-before-the-scaling-operation)
 - [Can I use the same storage account for persistence across two different caches?](#can-i-use-the-same-storage-account-for-persistence-across-two-different-caches)
@@ -122,6 +123,10 @@ Yes, Redis persistence can be configured both at cache creation and on existing
 
 No, you can enable RDB or AOF, but not both at the same time.
 
+### How does persistence work with geo-replication?
+
+If you enable data persistence, geo-replication cannot be enabled for your premium cache.
+
 ### Which persistence model should I choose?
 
 AOF persistence saves every write to a log, which has a significant effect on throughput. Compared AOF with RDB persistence, which saves backups based on the configured backup interval with minimal effect to performance. Choose AOF persistence if your primary goal is to minimize data loss, and you can handle a lower throughput for your cache. Choose RDB persistence if you wish to maintain optimal throughput on your cache, but still want a mechanism for data recovery.
@@ -204,4 +209,4 @@ After a rewrite, two sets of AOF files exist in storage. Rewrites occur in the b
 
 Learn more about Azure Cache for Redis features.
 
-- [Azure Cache for Redis Premium service tiers](cache-overview.md#service-tiers)
+- [Azure Cache for Redis Premium service tiers](cache-overview.md#service-tiers)