ну что, версионный режим победил и в мсскл
https://blogs.msdn.microsoft.com/sqlcat/2013/12/26/be-aware-of-the-difference-in-isolation-levels-if-porting-an-application-from-windows-azure-sql-db-to-sql-server-in-windows-azure-virtual-machine/
SQL Server Customer Advisory TeamOn Windows Azure SQL Database, the isolation level settings for READ COMMITTED SNAPSHOT and SNAPSHOT ISOLATION are turned on

Application Response Time (sec)
SQL Server in Windows Azure VM (default) 2.94
SQL Server in Windows Azure VM (with RCSI) 1.14

Application Throughput (web pages/sec)
SQL Server in Windows Azure VM (default) 13.9
SQL Server in Windows Azure VM (with RCSI) 34.8


Yo.!