Update recovery-using-backups.md

Author: danimir

articles/azure-sql/database/recovery-using-backups.md

@@ -11,7 +11,7 @@ ms.topic: conceptual
 author: SQLSourabh
 ms.author: sourabha
 ms.reviewer: kendralittle, mathoma, danil
-ms.date: 01/07/2021
+ms.date: 01/10/2022
 ---
 # Recover using automated database backups - Azure SQL Database & SQL Managed Instance
 [!INCLUDE[appliesto-sqldb-sqlmi](../includes/appliesto-sqldb-sqlmi.md)]
@@ -45,6 +45,9 @@ For a large or very active database, the restore might take several hours. If th
 
 For a single subscription, there are limitations on the number of concurrent restore requests. These limitations apply to any combination of point-in-time restores, geo-restores, and restores from long-term retention backup.
 
+> [!NOTE]
+> Very large restores on Managed Instance lasting for more than 36 hours will be prolonged in case of pending critical system update. In such case current restore operation will be paused, critical system update will be applied, and restore resumed after the update has completed.
+
 | **Deployment option** | **Max # of concurrent requests being processed** | **Max # of concurrent requests being submitted** |
 | :--- | --: | --: |
 |**Single database (per subscription)**|30|100|