This document describes a case study of consolidating a client's MS-SQL databases using Always On availability groups. The client had 39 SQL servers across different versions and editions. The project consolidated the 149 databases onto a new 6-node Always On configuration with Windows Server 2012 and SQL Server 2014 Enterprise. This reduced costs through optimized licensing, administration, and hardware while improving high availability, performance, security and manageability. The Always On configuration allows primary databases to accept read/write workloads while secondaries support read-only operations like reporting, backups and maintenance.

1. Case Study
MS-SQL Database Consolidation
For
BPO/KPO Domain

2. MS-SQL Database Consolidation
CASE STUDY
2
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COMPANY CLIENT
PROFILE:
The company
offers 24/7 services for contact
center solutions, transaction
processing, finance &
accounting, HRO and IT
solutions to Fortune
500 companies in the UK, US,
Australia, and India. Backed
by The Blackstone Group, a
leading Global Private Equity
player, It is a 55,000 people
organization spread across 70
global delivery centers across
North & Central America, UK,
Europe, Asia Pacific and the
Middle East; supporting 110+
clients in over 50 languages
EMPLOYEE STRENGTH :
• More than 5,0000
TECHNOLOGIES USED:
• Database: SQL SERVER
2008, 2008 R2, 2012
Enterprise & Standard
Edition
• OS Platform: Windows
Server 2008 R2, 2012
Enterprise x64 Edition
OVERVIEW:
This company is a leading global Business Process Solutions company, committed to excellence.
Backed by The Blackstone Group, a world leading private equity player, we focus on enhancing
Customer Experience by investing in relationships and powering innovation through Technology
and Analytics.
We are 55,000 people strong, with over 70 global Delivery Centers in 8 locations across
Americas, UK, Europe, Middle East, India and Philippines. We serve 110+ clients in over 25
languages. It has been recognized by NelsonHall as a ‘Leader in Customer Management
Services’, we also won NASSCOM ‘Customer Service Excellence Award 2017’. It was also
presented the BBC Knowledge Outsourcing Award for ‘Operational Excellence and Quality’.
MS-SQL SERVER CONSOLIDATION and Always ON:
Consolidation:-
“Combining of various units into more efficient and stable larger units is called a
CONSOLIDATION .Server consolidation is an approach to the efficient usage of computer server
resources in order to reduce the total number of servers or server locations that an organization
requires.
Always on:-
Always on is latest technology introduce in 2012 SQL SERVER .Always on is HA-DR and
alternate solution for Database Mirroring. Its very flexible and multiple secondaries so its used for
offload balancing, secondary as readonly,backup and reporting purpose

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CASE STUDY
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WHY CONSOLIDATION and ALWAYSON:
Consolidation:
Consolidation reduces the Licensing cost of Windows server as well as SQL Server also it
provides the ease of manageability and standardization to the customer
Forces Driving to consolidation:
• Reduced TCO (Total Cost Of Ownership)
• Optimized Administration and Licensing costs
Key Enablers:
• Software
• Hardware
• Virtualization
Alwayson:
In Alwayson We can consolidate many SQL SERVER version into single SQL SERVER means
we can manage many consolidated database into Always on node as Availability Group and
Availability Group is primary and Secondary.
Primary Availability Group ,we can read write and Secondary Availability we can do readily only
process and also reporting purpose, backup and DBCC purpose.
customer’s merits included:
• Optimized database code with no deprecated features;
• Efficient high availability production system running on the latest edition of SQLServer;
• Increased performance, security and failover features.
To make the project even more cost-effective, we reduced travel expenses and performed all
upgrade operations remotely, using the RDP connection.
Finally, we provided the customer with a full set of documentation related to the upgraded system
and the best practices on using and upgrading the high availability database system.

4. MS-SQL Database Consolidation
CASE STUDY
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Always on Structure
We had given six always on WSFC node for Always on configuration.
Three node in Thane subnet and three in CTRLs subnet.
We have configured Always on for multisubnet node.
Server Detail
Subnet in Always on:-
1.CTRL-S
2.THANE
Node included in Always on. :-
1. Node 1(10.200.140.30)
2. Node 2(10.200.140.31)
3. Node 3(10.200.140.17)
4. Node 4(10.200.19.30)
5. Node 5(10.200.19.31)
6. Node 6(Optional)( 10.200.19.17)
Always on Configuration setup:-

5. MS-SQL Database Consolidation
CASE STUDY
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Nodes Detail in Always on
Always on Architecture

6. MS-SQL Database Consolidation
CASE STUDY
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ENVIRONMENT (BEFORE Always on Configuration):
Client having huge server setup for PRODUCTION Server We have migrated and check
status of server
Server Detail :
Total number of Server= 39 Servers
Total Number DB for migration on Always on =149
Operating System = Windows server 2003,2008 with Enterprise Edition
Servers with SQL Server Enterprise edition = 24 Servers
Servers with SQL Server Standard edition = 10 Servers
Server with other SQL Server Edition =05
ENVIRONMENT(After Migration and consolidated on Always on Detail):
Subnet : -Multisubnet
Location :- Thane (10.200.19.xx)
Location :- Mahape(10.200140.xx)
Operating System = Windows server 2012 Enterprise Edition
SQL Server Version = SQL Server 2014 Enterprise edition.

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Always on Current Environment
INITIAL ANALYSIS PERFORMED:
Inventory collection of all the Production Servers.
Analyze all the SQL Server.
Analyze SQL Server licenses and Editions Currently Installed.
Studied Windows Server and SQL Server configurations.
Monitor the storage supplied to the servers.
Monitor Network requirement of the server.
Monitored IOP’s of the Server.
Monitor need of memory for server
Database Size and its property write down in docs.
1. Detail of Availability Group dashboard

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Snapshot of Detail and updated list
Benefits Of Alwayson and Consolidation:
• Improved performance
• Scalability
• Optimization
• Management
• Reducing Costs and Improving efficiency
• Standardization and Centralization
• Less Number of License
• Lower Monitoring Costs
• Reduces Number of Windows Installation to maintains
• Reduces Number of SQL Server instances to maintain
• Easy to maintenance.
• Flexibility provide in work

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RESULTS:
We have configured Always on in Six node with multisubnet and Performance of servers
are good. Client can access database 24X7 with no data loss. Performance is good due
to secondary use as Reporting purpose, Backup purpose and DBCC checking.