Purpose of TNSDC:

     TNSDC act as a key-supporting element of e-Governance initiatives and businesses for delivering services to the citizens with greater reliability, availability, dependability and serviceability. TNSDC provides better operations and management control and aim to minimize overall cost of Data Management, IT Management, Deployment, Power requirement and other costs.

     TNSDC enables the State Government Departments to host their applications, services and servers on a common, redundant, secured and controlled infrastructure aiming at ease of integration and efficient management.

     Tamil Nadu State Data Centre (TNSDC) facilitates consolidated hosting of departmental applications to provide efficient delivery of e‑Governance services of the State. These services are extended to Government agencies, Citizens and Business through intranet connectivity by Tamil Nadu State Wide Area Network (TNSWAN) also through internet.

  1. Tamil Nadu State Data Centre – 1

     Tamil Nadu State Data Centre – 1 is a shared scheme established under National e-Governance Action Plan (NeGAP). TNSDC commenced its operations on 01.08.2011. TNSDC is the first ISO certified State Data Centre in the country (First Certification on 21.02.2012).

     The ‘Term 1’ operation of TNSDC was successfully completed on 31.07.2016. On completion of the Interim period operations (01.08.2016 to 31.10.2017), the ‘Term 2’ operations commenced on 01.11.2017.

     Tamil Nadu Government Departments have hosted their applications at TNSDC on Co-location/ Co-hosting/ Cloud hosting model.

Beneficiary of the Project:

   The Tamil Nadu State Data Centre (TNSDC) facilitates the State to provide efficient electronic delivery by its Departments

- Government to Government (G2G)

- Government to Citizen (G2C)

- Government to Business (G2B) services

Most of the Government Departments hosted their Application in TNSDC.



TNSDC Entrance view

Server Rocks

Server Racks

Department Server

Department Servers

Electrical Panel

Electrical Panels in the Server Farm

Electrical Room

Electrical Room

Security Architecture of TNSDC:

     High level of Security Architecture Framework has been implemented at TNSDC to ensure that all the government applications and data are well protected.

Salient Features of TNSDC:

  • TNSDC architecture design conforms to Tier – II standard  and has been established at Chennai.
  • State owned full-fledged Disaster Recovery facility through Disaster
  • Recovery Centre at Thiruchirapalli.  This facility can also be utilised for co-location Data Centre services.
  • Multi-tier security implementation with Firewall and Intrusion Prevention System.
  • TNSDC is secured with SIEM (Security Information and Event Management) tools, Vulnerability Assessment (VA) and Penetration Testing (PT) Tools.
  • Enhanced Security features  like Web Application Firewall (WAF), Distributed Denial  of Services (DDoS)
  1. Tamil Nadu State Data Centre – 2

     TNSDC-2 will accommodate around 50 racks initially and expandable up to 195 racks capacity on scalable manner.




     In order to have a Data Disaster Recovery Centre of its own in a different seismic zone, Tamil Nadu Disaster Recovery Centre has been established at Thiruchirapalli to ensure business continuity of various critical e-Governance applications hosted at Tamil Nadu State Data Centre.  This centre ensures continuity of services during risks pertaining to natural disasters.

     Tamil Nadu is the first State to build its own exclusive full-fledged Disaster Recovery Centre. TNDRC was inaugurated by The Hon'ble Chief Minister of Tamil Nadu on 11.10.2017 from State Government funds.

Salient Features of TNDRC:

  • Facilitated to have  a mirror image of the applications / data hosted in TNSDC.
  • Designed, built and maintained as per Tier II standards.
  • Reliable, robust and secured infrastructure for e-Delivery of services on a 24 X 7 basis in the event of disaster at TNSDC.
  • Established in a different seismic zone.
  • Ensures Business Continuity of various e-Governance applications hosted at TNSDC on demand.
  • TNDRC also addresses the co-location requirements of the Departments, which opt for co-location at Thiruchirapalli.


Inauguration of TNDRC by TheHon’ble CM


Elcot IT PArk


TNDRC established at ELCOT IT Park, Thiruchirapalli

Server Rocks

Server Racks

Server Farm Area

Server Farm Area

Electrical Setup ElectricalSetup1

Electrical setup at TNDRC


Near Line Disaster Recovery Centre (NLDRC)

     The synchronous replication requirements of the Departments for Near Line Disaster Recovery can be addressed by utilizing the  resources at BSNL Data Centre for which Memorandum of Understanding (MoU) has been made with BSNL.  Common IT Infrastructure including connectivity from TNSDC for providing NLDR services have been created by ELCOT  and the  requirements of the Departments are being addressed on case to case basis on receipt of demands from the departments

National Data Centre (NDC)- PUNE:

    NDC-Pune has been enabled as the Disaster Recovery (DR) facility for TNSDC and is now operational. TNSDC is mapped with National Data Centre (NDC)-Pune through NKN connectivity under the National Disaster Recovery Scheme. 


   Cloud computing, an Information Technology paradigm that enables ubiquitous access to shared pools of configurable system resources and higher-level services for rapidly provisioning e-Governance applications with minimal management have been established at Tamil Nadu State Data Centre. The Cloud service is operational w.e.f. 19.09.2016. 

Cloud Server

Cloud Servers

Features and facility of CLOUD @ TNSDC:

  • Availability of on demand infrastructure for hosting the application.
  • Improving infrastructure utilization with multiple Virtual machines (VMs) on a single host.
  • Allowing applications to leverage the power to scale up and scale down instances as per  the demand cycle.
  • Reducing the time required for the provisioning of Virtual Machines (VMs) through pre defined templates.
  • Allowing departments to deploy applications faster.
  • Ability to provide additional computing resources like CPU, RAM, Storage and OS whenever demand arises in production.
  • Rapid elasticity and dynamic scalability of computing resources.
  • Virtual machines (VMs) will be created and provided as per the requirement.
  • Operating Systems (OS) Redhat Linux and Windows will be provided to Virtual machines running on hypervisors RHEV and Hyper V.
  • Open source stack also can be deployed in open source hypervisor.
  •  Department can also bring in their OS with support, based on the compatibility matrix of the hypervisors.
  • Host Intrusion and Prevention System (HIPS) and Antivirus software will be provided for the VMs.
  • Up time of VMs will be monitored on 24x7 basis.
  • Hypervisor level clustering is enabled to provide HA for VMs.
  • Cloud operator will do OS hardening in co-ordination with user department.

Hosting charges in Cloud:

Virtual Machine - Windows/Linux operating system:


Cost per annum per Virtual machine in Rs.

VCPU - 1 no.


RAM  - 1GB


Storage Area Network (SAN) space (60GB - usable)


Host Intrusion Prevention System and Anti virus



              43,000 + Taxes

*Any increase in above resources will be charged on pro rata basis.


Server Farm, a testing environment with common testing facilities like Antivirus, Firewall, VAPT tools etc., has been established at TNSDC to facilitate the Departments fortesting their applications at TNSDC.


e-Mail Solution,  an essential component of e-Enabling the Government functioning  is being provided & maintained by NICwith State Government funds and it is operational from 18.09.2015 with the domain name of  “tn.gov.in”.