<div>This project involved revamp of the datacenter with 0% downtime (few minutes of downtime). The client wanted to scrap out the old Itanium servers running RHEL 4 and Windows 2003 which were hosting a series of applications on outdated technology stack. The client needed a highly available and a robust technology stack with advanced analytics and reporting capabilities.</div><div><br></div><div>My responsibilities:</div><div>- Advising the client on selecting which technology stack to be used</div><div>- Designing the workflow of the migration process.</div><div>- Installed, configured and supported mission-critical Linux and Windows servers.</div><div>- Installed, configured and prepared HP-UX and Linux servers to install Oracle products</div><div>- Was responsible for 24x7 uptime and monitoring of IT infrastructure including the DMZ and Windows/Linux servers.</div><div>- Implemented Symantec Netbackup 7.5 to backup IT infrastructure using LAN on EMC Data Domain 620 System.</div><div>- Implemented Legato Networker to backup mission critical applications using SAN on EMC CX-240 library.</div><div>- Installed, configured and administrated Oracle DB on Red Hat, Oracle EL, Windows OS.</div><div>- Installed and configured real-time monitoring systems based on Nagios and Observium.</div><div>- Installed and configured HAproxy on Linux servers to provide High Availability.</div><div>- Configured and implemented RAID 10 on mission critical servers and RAID 5 on less mission mission critical servers to improve system stability.</div><div>- Tested new tasks in virtual environment before deploying them on production servers by means of VMware.</div><div>- Performed capacity planning and performance tuning Wndows/Linux Operating Systems for Oracle Databases/Middleware Applications.</div><div>- Administrated and managed EMC storage arrays.</div><div>- Identified and solved problems related with hardware, operating systems and network</div><div>- Was responsible for rack mounting and cabling of servers, storage arrays, tape libraries in the Data Center.</div><div>- Implemented shell scripts to automate tasks, gather system information and create custom startup scripts.</div><div>- Provided security Linux/Windows servers by means of IPFilter, IPTables, sudo, access control, security patches.</div><div>- Installed and configured MRTG to monitor the traffic load on network links.</div><div>- Installed, configured and supported Primary &amp; Secondary DNS, DHCP, FTP, NFS and NTP servers.</div><div>- Installed, configured Multipath I/O software on UNIX/Linux and Windows servers to provide fault tolerance.</div><div>- Created and managed user &amp; group accounts and customized login shell scripts.</div><div>- Managed and created disk partitions, modified physical volumes, volume groups, logical volumes (LVM).</div><div>- Monitored system resources utilization by means of ps, top, sar, vmstat, iostat, glance, ipcs.</div><div>- Configured UNIX/Linux kernel parameters and updated kernels on Linux servers.</div><div>- Compiled and installed software from source code on Linux servers.</div><div><br></div><div>It was a six month project. The migration was completed within 4 months and after succeeding 2 months were spend for the stability phase.</div>

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