AHMEDABAD DIVISION TENDER DOCUMENT ... - Western Railway

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7. In case of GPRS failure the EMCS Unit should store all the data with date/time stamp
for at least 10 days and should send it to Central Server as the GPRS resumes and
should ensure more than 95% data transmission.
8. EMCS Unit should support Remote Over The Air Firmware Updates of the complete
unit for future proof deployment
2.2 Web based Software Functional Requirements :
The following should be taken care of in the Central Data Centre by the bidder:
1. The Data Collection Servers should work on open protocol having mechanism for
assured delivery of data sent by EMCS hardware device.
2. The Data transfer between the Data Collection Servers and EMCS devices should work
on publish subscribe mechanism. There should be no requirement of polling of data of
the EMCS devices by the data collection server. The EMCS devices should publish
their data to the data collection server on their own at a frequency of 15 minutes and
configurable by User. In case of interruption in the communication, the EMCS device
should be capable of resuming the communication from the last point.
3. The application software should be based on Service Oriented Architecture (SOA).
4. The application should be based on n-tier architecture with separate layers for
presentation, business rules, middleware and database. Each tier should be based on
component architecture.
5. The database servers should be clustered to work in fail-safe mode with SAN storage
to handle the huge data storage requirements. (Necessary Invoicing / Work Order to be
provided)
6. Backup: The Bidder shall have to automate its system so as to have regular back up of
the data to ensure availability of data and information.
7. Designing and deployment of clustered database (high availability mode) at central
location: The Bidder is required to design the database in RDBMS platform so as to
store all meter readings and Events at a pre-defined frequency along with meter
configuration data. The database servers shall be installed in clustered mode to ensure
its high availability. SAN Storage should be working at least on RAID-5 mode.
8. All the application software, which is to be supplied by the Bidder, shall be web based.
The web application should be accessible by RAILWAYS officials by entering their
user name and password. There should not be any requirement on local application, and
the system should work from anywhere on a simple web browser with secured
username and password.
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