Merge pull request #233073 from guywi-ms/patch-50

Update data-security.md

Author: prmerger-automator[bot]

articles/azure-monitor/logs/data-security.md

@@ -161,7 +161,7 @@ As described above, data from the management server or direct-connected agents i
 ### 3. The Azure Monitor service receives and processes data
 The Azure Monitor service ensures that incoming data is from a trusted source by validating certificates and the data integrity with Azure authentication. The unprocessed raw data is then stored in an Azure Event Hub in the region the data will eventually be stored at rest. The type of data that is stored depends on the types of solutions that were imported and used to collect data. Then, the Azure Monitor service processes the raw data and ingests it into the database.
 
-The retention period of collected data stored in the database depends on the selected pricing plan. For the *Free* tier, collected data is available for seven days. For the *Paid* tier, collected data is available for 31 days by default, but can be extended to 730 days. Data is stored encrypted at rest in Azure storage, to ensure data confidentiality, and the data is replicated within the local region using locally redundant storage (LRS). The last two weeks of data are also stored in SSD-based cache and this cache is encrypted.
+The retention period of collected data stored in the database depends on the selected pricing plan. For the *Free* tier, collected data is available for seven days. For the *Paid* tier, collected data is available for 31 days by default, but can be extended to 730 days. Data is stored encrypted at rest in Azure storage, to ensure data confidentiality, and the data is replicated within the local region using locally redundant storage (LRS), or zone-redundant storage (ZRS) in [supported regions](../logs/availability-zones.md). The last two weeks of data are also stored in SSD-based cache and this cache is encrypted.
 
 Data in database storage cannot be altered once ingested but can be deleted via [*purge* API path](personal-data-mgmt.md#delete). Although data cannot be altered, some certifications require that data is kept immutable and cannot be changed or deleted in storage. Data immutability can be achieved using [data export](logs-data-export.md) to a storage account that is configured as [immutable storage](../../storage/blobs/immutable-policy-configure-version-scope.md).