Update search-how-to-large-index.md

Updating to reflect SharePoint default batch size.

Author: gmndrg

articles/search/search-how-to-large-index.md

@@ -10,7 +10,7 @@ ms.service: azure-ai-search
 ms.custom:
   - ignite-2023
 ms.topic: conceptual
-ms.date: 10/24/2024
+ms.date: 02/25/2025
 ---
 
 # Index large data sets in Azure AI Search
@@ -76,7 +76,7 @@ Partitioning data into smaller individual data sources enables parallel processi
 
 As with the push API, indexers allow you to configure the number of items per batch. For indexers based on the [Create Indexer REST API](/rest/api/searchservice/indexers/create), you can set the `batchSize` argument to customize this setting to better match the characteristics of your data. 
 
-Default batch sizes are data-source specific. Azure SQL Database and Azure Cosmos DB have a default batch size of 1,000. In contrast, Azure Blob indexing sets batch size at 10 documents in recognition of the larger average document size. 
+Default batch sizes are data-source specific. Azure SQL Database and Azure Cosmos DB have a default batch size of 1,000. In contrast, Azure Blob and SharePoint Online (Preview) indexing sets batch size at 10 documents in recognition of the larger average document size. 
 
 ### Schedule indexers for long-running processes