Krishna Giri

- Manage and monitor VMware vSphere environment.
- SAN/NAS configuration
- Active Directory manage and monitoring
- Linux System Administration. Manage and configure linux servers.
- Oracle Virtual Machine installation and configuration. Create and manage virtual machines in OVM environment
- Configuration switch/router with different vendors
- Handled various projects which included all the activities for IT infrastructure like network and servers.
- Documentation

 Monitor system availability, security and performance, tracking trends, and making adjustments to current configurations to ensure optimum system performance.
 Ensure all system information is backed up and retrievable.
 Installation, upgrade, maintenance of all system software such as operating system, Time Attendance, network management, e-mail and backup software.
 Monitor systems and network and make recommendations for proactive changes and improvements for the same.
 Plan and execute server operating system, hardware and system software patches.
 Use in-depth understanding of operating system software and utilities to manage the performance of the corporate network and computer systems.
 Interact with users to resolve system problems.
 Evaluate and monitor the system network security, make recommendations and execute improvement plans.
 Monitor and test network performance and provide statistics and reports.
 Manage and administer all network hardware and equipment, including PC, Laptop, server, routers, switches, hubs, wifi devices. Access point, printers, fingerprint machine, scanners, copiers and faxes.
 Perform infrastructure design and capacity planning.

• Experience with designing and implementing VMware ESXi 5.x servers, vCenter, vMotion, High-Availability, Fault Tolerance, VMware Converter and other products for virtualization.
• Maintain backups for Disaster Recovery and Business Continuity. Backup technology used: Double Tech, Veeam. Also used open source backup utility like Rsync.
• Virtual Desktop Infrastructure (VDI) implemented on various organizations which helped organizations to reduce cost, easy to manage and build a scalable IT infrastructure. Software and devices used 2x, Citrix, VMware View, Wyse, Atrust, NComputing.
• Experience with VOIP technology. Designed and implemented unified communication service for call center and support center. Technology used 3cx, Asterisk, Microsoft Lync Server.
• Worked with storage technology like FC SAN, iSCSI, NAS in VMware environment.
• SonicWALL firewall implemented on various offices and corporate branches for network level security, VPN and gateway antivirus.
• Configured Layer2 and Layer3 switches of Cisco and Dell. Good understanding of VLANs concept.
• Managed IPMI on servers like SuperMicro, Dell and configured IO-LAN for routers and firewalls like SonicWALL, FortiGate, Cisco, and Juniper for console management.
• Installed and configured Network Monitoring System in various organizations. Technology used Solarwinds, Nagios, Opennms, Ntop, SNMP and MRTG.
• Keep record of all technical documentation. Which includes installation, upgrade, troubleshooting.
• Research for new technology and recommend appropriate.

• Write scripts in Linux Bash Shell to perform task like backup, build RPM and various stuffs.
• Configure Asterisk/Freepbx for VOIP communication within head office and schools.
• Apply system patches and upgrades.
• Configure wireless access points from various vendors.
• Monitor Network with open source monitoring utilities. Ntop, Nagios.
• Install, configure, and manage services such as Apache, MySQL, DNS, FTP, SAMBA, Squid Proxy in Linux Operation System.
• Use linux machine as router/firewall within the office to reduce cost from expensive router/firewall devices.
• Keep track of technical documentation.

* Responsible for conducting RHCE classes.
* Interact with the students to resolve the queries, issues and problems.
* Responsible for providing help, support and assistance in initial installation of the system, setup and maintenance of the user account, network monitoring, etc.

Responsible for providing the assistance in the installation of system, network.
Configure the switches, routers, modem etc.
Installation and troubleshooting of linux/unix system and various application software.
Support customers for their problems and queries.