Module 19

Managing Multiple Servers

Module Overview

• Working with Multiple Servers

• Virtualizing SQL Server

• Deploying and Upgrading Data-Tier Applications

Lesson 1: Working with Multiple Servers

• Overview of Central Management Servers

• Executing Multi-server Queries

• Demonstration 1A: Executing Multi-server Queries

Overview of Central Management Servers

• Configuration requires: Define CMS server (typically only one server)

Create server groups

Register servers

• Group actions permitted: Execute T-SQL statements

Evaluate and Import Policy-Based Management policies

Browse Object Explorer

• Usage requires Windows Authentication and membership of ServerGroupReaderRole

Central Management Servers are used to hold details of servers within an organization and to organize the servers within groups.

Executing Multi-server Queries

• T-SQL queries can be executed on multiple servers at the same time

• Results can be merged

• Additional columns are provided for source server and login information

Different permissions might apply on each server instance !

Demonstration 1A: Executing Multi-server Queries

In this demonstration, you will see:

• How to create a Central Management Server

• How to execute multi-server queries

Lesson 2: Virtualizing SQL Server

• Discussion: Advantages and Disadvantages of Virtualizing SQL Server

• Overview of SQL Server Virtualization

• Common Virtualization Scenarios

• Considerations for Virtualizing SQL Server

• Overview of System Center Virtual Machine Manager

Discussion: Advantages and Disadvantages of Virtualizing SQL Server

• Do you use virtualization of SQL Server in your environment?

• If you are using virtualization, why are you using it?

• What are the main advantages provided by virtualization?

• What are the main concerns with virtualizing SQL Server?

Overview of SQL Server Virtualization

Root Partition Windows Server

Child PartitionWindows Server

SQL Server

Child PartitionWindows Server

SQL Server

Hyper-V Hypervisor

Hardware

Common Virtualization Scenarios

• Consolidate several stand alone installations • Create more supportable systems running older

versions

SQL Server consolidation

• Provide hardware independence• Create failover clusters and use Live Migration

High availability

• Provide dynamic CPU, memory and network allocation

Dynamic resource allocation to meet SLA

• Easily build and run test environments

Test systems

Considerations for Virtualizing SQL Server

• Use POC to ensure that virtualization meet your needs

• Provide appropriate I/O resources Use pass-through disks

Apply best practice as for non-virtualized systems

Use SQLIO for pre-deployment testing

• Provide appropriate CPU resources Provide additional CPU for network intensive systems

• Avoid the use of emulated devices Install integration components for Hyper-V that provide

synthetic devices

Overview of System Center Virtual Machine Manager

• Component of the System Center suite

• Often used in conjunction with System Center Operations Manager (SCOM)

• Allows balancing resources across multiple virtual machines Avoids much of the need to balance resources within each

machine

System Center Virtual Machine Manager (SCVMM) is a tool that allows you to manage resource allocations between multiple virtual machines.

Lesson 3: Deploying and Upgrading Data-Tier Applications

• Data-tier Application Overview

• Deploying Data-tier Applications

• Upgrading Data-tier Applications

• Extracting Data-tier Applications

• Demonstration 3A: Working with Data-tier Applications

Data-tier Application Overview

• Unit of deployment for T-SQL applications

• Targeted at departmental applications Not intended for large line of

business applications

• Wraps deployment intent as policies

• Simplifies deployment Install Uninstall Upgrade

LOGICALTablesViews

ConstraintsProcedures

UDFs

PHYSICALUsersLogins

Indexes

DEPLOYMENT PROFILERequirements

Policies

Data-tier Application Component

Schema

Deploying Data-tier Applications

• Wizard-based deployment

• Requires target database name

• Checks server-selection policy

• Creates database and objects Default database settings are

used

Recovery model from the model database

• Review and test .dacpac files before production deployment

Upgrading Data-tier Applications

• Wizard-based upgrade process Used to change schema and properties of deployed

applications

Not T-SQL script-based

New database created with new schema

Application name must match currently deployed file

• Data is migrated Original database renamed and set to read-only

New replacement database created

Space usage must be considered

Data migration time must be considered

• Process can be managed via PowerShell

Extracting Data-tier Applications

• Data-tier applications can be extracted from many existing databases

• Not all databases can be extracted

• Reverse engineering process: Extract through SSMS

Create Visual Studio Project

Develop new application version

Compile and build

Upgrade application to new version

Demonstration 3A: Working with Data-tier Applications

• In this demonstration, you will see: How to deploy a data-tier application

How to upgrade a data-tier application

Lab 19: Managing Multiple Servers

• Exercise 1: Configure CMS and execute multi-server queries

• Exercise 2: Deploy a data-tier application

• Exercise 3: Register and extract a data-tier application

• Challenge Exercise 4: Upgrade a data-tier application (Only if time permits)

Logon information

Estimated time: 45 minutes

Virtual machine 623XB-MIA-SQL

User name AdventureWorks\Administrator

Password Pa$$w0rd

Lab Scenario

You have configured a Management Data Warehouse. You need to configure a solution that allows you to easily manage multiple SQL Server instances. You have noticed that on each computer that you connect to your SQL Server network, a different set of servers has been configured. You decide to configure a central management server to provide a consistent list of server groups. Your developers have begun using Data-Tier applications for some of their development. You need to deploy one of these applications to the new server, register an existing database as a Data-Tier application and, if time permits, upgrade a Data-Tier application.

Lab Review

• At what stage is the server selection policy checked when deploying a data-tier application?

• Can multi-server queries be used with servers that you need to connect to using SQL Server authentication?

Module Review and Takeaways

• Review Questions

• Best Practices