Merge pull request #104258 from urosmil/patch-1

Updated with Gen4 decommissioning

Author: PRMerger15

articles/sql-database/sql-database-managed-instance-faq.md

@@ -76,21 +76,11 @@ One option is to [export the database to a BACPAC](sql-database-export.md) and t
 
 This is the recommended approach if your database is smaller than 100 GB. Transactional replication can be used if all tables in the database have primary keys.
 
-## Gen 4 vs Gen 5 
-
-**How do I choose between Gen 4 and Gen 5 hardware generation for managed instance?**
-
-It depends on your workload as some hardware generation is better for certain types of workloads than the other. While the subject of performance is rather a complex one to simplify, the following differences between the hardware generations affecting the workload performance:
-- Gen 4 provides a better compute support as it is based on physical processors, versus Gen 5 that is based on vCore processors. It might be more advantageous for compute intensive workloads.
-- Gen 5 supports accelerated networking resulting in a better IO bandwidth to remote storage. It might be advantageous for IO intensive workloads on General Purpose service tiers. Gen 5 uses faster SSD local disks compared to Gen 4. It might be advantageous for IO intensive workloads on business critical service tiers.
-
-It is strongly advised to test the performance of actual workloads intended for production before going live to determine which hardware generation will work better in a specific case.
-
 ## Switch hardware generation 
 
 **Can I switch my managed instance hardware generation between Gen 4 and Gen 5 online?**
 
-Automated online switching between hardware generations is possible if both hardware generations are available in the region where your managed instance is provisioned. In this case, you can use [script from blog post](https://techcommunity.microsoft.com/t5/Azure-SQL-Database/Change-hardware-generation-on-Managed-Instance/ba-p/699824) explaining how to switch between hardware generations.
+Automated online switching between hardware generations is possible if both hardware generations are available in the region where your managed instance is provisioned. In this case, you can check [vCore model overview page](sql-database-service-tiers-vcore.md) explaining how to switch between hardware generations.
 
 This is a long-running operation as a new managed instance will be provisioned in the background and databases automatically transferred between the old and new instance with a quick failover at the end of the process. 
 
@@ -103,8 +93,6 @@ If both hardware generations are not supported in the same region, changing the
 
 General Purpose managed instance uses remote storage due to which size of data and log files matters to performance. For more information, see [Impact of log file size on General Purpose Managed Instance performance](https://medium.com/azure-sqldb-managed-instance/impact-of-log-file-size-on-general-purpose-managed-instance-performance-21ad170c823e).
 
-For IO intensive workloads consider using Gen 5 hardware, versus using Gen 4 for compute intensive workloads. For more information, see [How do I choose between Gen 4 and Gen 5](#gen-4-vs-gen-5).
-
 If your workload consists of lots of small transactions, consider switching the connection type from proxy to redirect mode.
 
 ## Maximum storage size

articles/sql-database/sql-database-managed-instance-resource-limits.md

@@ -32,8 +32,8 @@ Managed instance has characteristics and resource limits that depend on the unde
 | Max instance reserved storage |  General Purpose: 8 TB<br/>Business Critical: 1 TB | General Purpose: 8 TB<br/> Business Critical 1 TB, 2 TB, or 4 TB depending on the number of cores |
 
 > [!IMPORTANT]
-> - Gen4 hardware is being phased out. It is recommended to deploy new managed instances on Gen5 hardware.
-> - Gen4 hardware at this time is still available only in the following regions: North Europe, West Europe, East US, South Central US, North Central US, West US 2, Central US, Canada Central, South India, Southeast Asia and Korea Central.
+> - Gen4 hardware is being phased out and is not available anymore for the new deployments. All new managed instances must be deployed on Gen5 hardware.
+> - Consider [moving your managed instances to Gen 5](sql-database-service-tiers-vcore.md) hardware to experience a wider range of vCore and storage scalability, accelerated networking, best IO performance, and minimal latency.
 
 ### In-memory OLTP available space 
 

articles/sql-database/sql-database-managed-instance.md

@@ -75,9 +75,6 @@ In vCore model, you can choose between generations of hardware.
 
 Find more information about the difference between hardware generations in [managed instance resource limits](sql-database-managed-instance-resource-limits.md#hardware-generation-characteristics).
 
-> [!IMPORTANT]
-> New Gen4 databases are no longer supported in the Australia East or Brazil South regions.
-
 ## Managed instance service tiers
 
 Managed instance is available in two service tiers: