upgradation of email servers upgradation of email servers augmenting capacity from 3000 to 8000 users for the existing email solution supply , delivery , installation , upgradation , integration and commissioning of all the components as applicable , e-mail messaging software , e-mail messaging software -academic perpetual licenses ( must be fullycompatible with the existing licenses of iitr ) , 24x7 oem support ( for s . no 1 . 01 above ) for 5 years ( must be fully compatible with the existing licenses of iitr ) , 24x7 oem support ( for existing e-mail messaging software at iitr ) foradditional 2 years , hyper-converged infrastructure ( hci ) ( as per the proposed architecture and solution by the system integrator ( si ) basis the requirements described in the later sections ) , licenses , licenses for additional components ( if required as per the proposed architecture and solution ) , 5 years production support ( for components in s . no 3 . 01 ) , one time installation , upgradation & integration services , 24x7 remote support by si for 5 years