Erp It Hardware

7/31/2019 Erp It Hardware

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IT INFRASTRUCTURE

NEED TO ASSESS ERPs IMPACT ON

COMPANYS IT INFRASTRUCTURE

If company identifies the deficiency in IT infrastructurelater, fixing the deficiency causes delays in roll out andrunning up costs. If they are not corrected, ERP will notdeliver intended advantages.

To avoid, IT infrastructure strategy to be envisioned,planned and put in place before commencing ERPimplementation.

6/24/2012 RADM-ERP-CHRISTUNIVERSITY 2010


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IT INFRASTRUCTURE

IT INFRASTRUCTURE OBJECTIVES :-

Building organization wide structured integrated IS / IT

Select scalable Hardware & network handling growth Existing & proposed IT protected from technical

obsolescence ensuring they are of latest technology andin most cases COTS applications

Ensuring cost effective solutions and ROI. Technically and commercial feasible

Hardware and network throughput performance notcompromised and meets the requirements.



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IT INFRASTRUCTURE

SYSTEM ARCHITECTURE

Architecture of the client-server system built on n-tier

architecture. Most of the applications recommend 3 tierwhere there is server/middleware between the client andthe server.

ERP evolved from mainframe archi to client server typeand moving towards distributed component archi.

Client server archi is an organization of computerapplication on a network in which one computer (client)is requesting a process or data from another (server)



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IT INFRASTRUCTURE

SYSTEM ARCHITECTURE Server Database resides + business logic

Client - User interface resides + business logic

Factors reliability and speed of the network, degree of

security and cost. Two tier user interface + ERP business logic of the

application software is in client computer

Three tier user interface in client computer, ERP

business logic stored in application server and datawarehouse software in server



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IT INFRASTRUCTURE

SYSTEM ARCHITECTUREWEB ENABLED COMPUTING ARCHITECTURE

Most of the ERPs developed on CS archi and now

translating into web-based computing.

Application software resides in on a network server andthe client computer only needs a standard browser.

Browser is a thin client unlike the fat client in CS providesa window to the server based applications.

To modify/ upgrade, need to make changes only to theserver based applications not on 1000s of client PCs.

Benefits include reduced cost and administrative burden,allow larger no. of clients served simultaneously.



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IT INFRASTRUCTURE

SYSTEM ARCHITECTURE

DISTRIBUTED COMPONENT ARCHITECTURE

Latest technology and most significant shift in corporate

computing environment. Real world applications of componentization which can be

defined as a language and a neutral independentlyimplemented package of software services.

These software services delivered in an encapsulated andreplaceable container, accessed via one or more publishedinterfaces



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IT INFRASTRUCTURE

HARDWARE

ERP add considerable demand for desktops & servers.

New database and application servers are to be procured.

Need to look at Hardware configuration and redundancy

Configuration and size determined by volume of datatransactions and the architecture and also on choice ofhardware platform offered by the ERP vendors.

Three tier architecture with centralized database residingin database server and the ERP residing in applicationserver is good enough.



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IT INFRASTRUCTURE

HARDWARE

CPU Two choices Reduced instruction-set computing(RISC) and Complex instruction-set computing(CISC).

RISC Faster, efficient, handles peak demands, Largercapacity and best suited for UNIX OS. It is proprietaryhardware and more expensive.

CISC Available in open market with range of options,

significantly cheaper, support both UNIX and Windows OS.But lower peak performance compared to RISC.



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IT INFRASTRUCTURE

HARDWARE

RAM- Main memory - the size governed by ERPapplication software, RDBMS and OS, no. of concurrent

users etc. Hard Disc Space requirement determined by application

software, space for application module, OS, Database,Data retention period, temp files, logs etc.

Hardware redundancy in the event of failure of the mainservers, the secondary backup servers installed at aseparate location should keep the applications running.

Second power supply to be available (UPS)



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IT INFRASTRUCTURE

SOFTWARE

System software OS which acts as an interface betweenthe hardware, the application running on it and the user.

Major business applications run on Unix while small tomedium applications are deployed on Windows server.

Unix is better suited for ERP application due to its veryhigh scalability, reliability, do not crash, superior

performance and windows can be used. Application Software Recommended that COTS

packages are used. - ERP package, Intranet/workflow andoffice automation software.



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IT INFRASTRUCTURE

DATABASE

Proper selection of DB is very important. Some RDMBSthat may be considered are the Oracle which is the leading

RDBMS with rich features and tools. It has the widest usein ERP applications. Others like DB2, Microsoft SQLserver are the options for low end ERP applications.

Oracle is the ideal choice for ERP packages and it has the

capability of handling large volumes of data. There is nolimit on the max. no. of DB connections per server. Alsosupports majority of OSs.



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IT INFRASTRUCTURE

NETWORK

Integrated communication network to ensure concurrentprocessing with Real time updation and action, the

networking combination of LAN and WAN for inside andoutside the organization network connectivity.

Data centre houses networking amongst all servercomputers and communication devices. There would be

two servers in the data centre one is the application serverand the other database server which lies in the heart ofERP system.

Clients are connected to the network (LAN / WAN)



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IT INFRASTRUCTURE

NETWORK

Proper capacity planning and sizing of the data centrecritical to ensure that the network do not become a

bottleneck. Network Connectivity In WAN, two choices are the

satellite link (VSAT) and another Terrestrial leased lines(ISDN, Dial-up etc) though in India leased line links are not

yet completely reliable. Network design should address the bandwidth

requirement, scalability, reliability, performance, security.



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IT INFRASTRUCTURE

NETWORK

Network management involve fault/problem management,change management, security and performance

management.

IT system management policy addresses the requirementof data security policy, data back up and storage

management, migration strategy and the trainingmanagement.


Erp It Hardware

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