I have a rich experience of around 7 yrs in System Administration. I have a vast knowledge on Blade infrastructure, Virtual Computing Environment (VCE), Cisco UCS , VMware Cloud , Openstack , AWS, Xen Virtualization and Linux. Following are the activities and Servers I have maintained on Linux: 1) Configuring and managing all kinds of Linux Distro such as RHEL, CENTOS, UBUNTU, FREEBSD, DEBIAN. 2) Configuring and Managing Zimbra, Postfix, and other mailing software. 3) Configuring and Managing Web Servers like Apache, lighthttpd, nginx. 4) Working on Hosting panels as CPanel, ISPconfig, Webmin, SolusVM. 5) Configuring and Managing Monitoring Servers as Nagios, Zabbix, Solarwinds. 6) Configuring and Managing Database server on Mysql, Pgsql. 7) Configuring and Managing HA clusters with Heartbeat. 8) Experience in system/network programming, data-intensive system configuration management, operating system tuning, scripting language(s) such as Shell, Perl. 9) Good HA and DR understanding. (Clustering, Load balancers) using Pacemaker, HA-proxy, Keep-alive. 10) Configuring and managing Streaming servers on RED5 platform.11) Oracle Rac installation and configuration. I am Redhat Certified Engineer and Vmware Certified Professional. You can reach me at skype umashankar_1988.