SUMMARY

• Operating Systems used were Windows Server 2003, Windows XP Professional, Windows 98, Linux Redhat 9 and Fedora.
• Implementation, configuration and Maintenance of wired and wireless LAN connections covering a vast area, using Switches, LAN Extenders, Access Points and Wireless Routers.
• Maintenance and configuration of Cisco Router for internet using DSL WAN Connection which includes setting up access lists and IP address assignment for LAN and WAN interfaces.
• Responsible for implementing and maintaining Domain setup and Exchange Server 2003 Mailing System and VPN setup through the router.
• Implemented, configured and maintained partial Mailing System using postfix and dovecot on Fedora Core Linux.
• Writing scripts for automating for automating the functions at the OS level.
• Developed programs in vb.net

SKILL

• Cloud
• Public & Private Clouds - Infrastructure as a Service (IaaS), Software as a Service (SaaS) & Desktop as a Service (DaaS).
• VMWare
• vsphere, HA, DRS, SRM, Auto Deploy, vCloud Director, vShield Networking & Security, vCenter Orchestrator, vCenter Operations Manager, VMWare Horizon View - Single and Multi-tenant setup, VMware Thinapp, Horizon Workspace, Cisco 1000v Virtual Switch, vDistributed Switches and standalone switches, Raw Device Mappings (physical & virtual modes); VMWare Converter & other Migrations (physical to virtual & virtual to virtual); NSX; vSAN
• OpenStack Cloud
• Grizzly, Havana and Icehouse versions - Services Keystone, Nova, Glance, Swift, Cinder, Neutron, Heat & Dashboard for single & Multi-tenant setup; Ceph cluster as shared storage for Openstack.
• Storage Virtualization
• vSAN, Ceph.
• Network Virtualization and Network Functions Virtualization
• VMware NSX
• VBlock
• Cisco UCS Chassis with Blades, Cisco UCS Fabric Interconnects, Fiber Channel Switches, EMC VNX Storage, Nexus Switches, Cisco UCS standalone servers, Powerpath for ESXi servers.
• Storage - SAN & NAS
• Netapp, EMC, Oracle, Dell.
• Operating Systems
• Windows (all services including Active Directory and the related) & LINUX Systems Administration and Networking with Messaging, Security Systems.
• Application publishing/presentation and Virtualization
• Citrix Xenapp, Oracle Secure Global Desktop and VMware Thinapp.
• Networking
• Firewalls, Routers, Wireless Routers, Hardware Load Balancer, Switches - Ethernet, Fiber channel etc.
• Database
• Oracle DBA, ERP - Oracle 11i E-Business Suite DBA & System Administration, SQL Server DBA, MySQL Administration.
• Applications
• Extensively experienced in deploying Various Windows and Linux Applications in physical and virtual environments; experienced in deploying Hosted Application (SaaS - Software as a Service) setup on Cloud and non-cloud Environments.
• Programming and scripting
• Shell, PowerShell, Perl, C, C++, vb.net, java.
• Other
• Hardware Assembly and Network Cabling; Managed groups of people, technical and non-technical; Trainer.
• Communications
• Excellent Verbal & Written skills
• MS Vizio for drawing technical plans and designs

PROFESSIONAL EXPERIENCE

Confidential, CA 

Systems Administrator 

• VMware
• vBlock Cloud infrastructure at Ashburn for Zerigo and VCC and a second Cloud Infrastructure at Santa Clara for Zerigo; Done upgrades and maintenances.
• vBlock
• VMware vsphere, vCloud Director, vCloud Networking and Security, Cisco 1000v Virtual Switches; UCS Cisco Chassis with blades, Cisco 3560 switches, Cisco Nexus 5k switches, Fiber channel switches, EMC VNX 5k storage - Managed and done VMware infrastructure and all device code upgrades as per VCE Matrix; Maintaining the HA infrastructure.
• VDI
• Planning, design and creation of a full setup for multi-tenant VDI with VMware Horizon View. Documented and provided to Cloud hosting team; Tested Horizon workspace (Application publishing on VMware View Desktops) and Application Virtualization using Thinapp. Supporting external customers on VMware VDI. Maintenance and support of all Windows Server configurations and clients included with the VDI.
• Openstack
• Created a whole Openstack Cloud environment (including, DNS servers, NTP, firewalls, File Repository, chef for managing openstack infrastructure, controllers, compute, network, ceph admin, ceph nodes etc) Icehouse version integrated with Ceph opensource HA storage on CentOS. Tested Openstack with Havana and grizzly versions and ceph on Ubuntu.
• Other Storage
• Worked on setting Netapp storage at DC6, Ashburn and maintaing existing Netapp Storage Devices.
• Other
• Experienced working with different vendor Technical Support.
• Experienced in providing help to first line of technical support and direct support to customers for Hosting as well as cloud hosting.

Confidential , CA 

Sr. Database Administrator

• Clustered VMWare vsphere 4.1 infrastructure with many VMs, Linux, Windows, SAN and Network Administration
• Implementation based on Change Control Process using Development, Test and Production Environments.
• Created and configured VMs; Cloned VMs using VMWare clone and duplicated VMs with reduced size using VMWare converter; vmotioned VMs from one server to another in the cluster; Storage vmotion; Exported VMs as OVA & OVF VM templates for importing it into ISU VMWare infrastructure; imported VMs from external sources.
• Active Directory issue resolution for the sdelab.local domain and creation of Additional domain controllers; upgraded Domain Controllers to Windows Server 2008; Fixed AD replication problems in one of the Domain Controllers in the production environment.
• Implemented Folder redirection of each user’s My Documents folder on Terminal Servers through group policies to another data store VM; migrating All Users My Documents with proper permissions using Robocopy; Configured Volume Shadow Copy on NTFS partition that stores users data (Network Drive Mapping and My Documents Folder redirection using group policies) which acts as their first level of backup; scheduled regular intervals for volume shadow copy snapshots.
• Worked on creating a set of production Terminal Server clusters to work with Secure Global Desktop (similar application as Citrix xenapp) for Statistical Analysis and other Applications used for Research purposes on ARS portal known as MyResearch.
• Installed Applications like SAS, STATA; upgraded Office 2010 on Terminal Servers; written vbscripts and batch files for various Administrative functions.
• Installed, configured and resolved RHEL (5.2, 5.1, 6.1), Ubuntu Linux, CentOS; configured java, apache tomcat, ant, vnc, screen, samba, NFS exports and mounts. Extracted OS partitions from Ubuntu Linux VM to rebuild the OS with original contents and without the big vm disk attached to it to be exported and imported into a new VMWare infrastructure as per their requirement using Live CD when vmware tools did not work out.
• Created and configured Oracle Database 11gR2 on CentOS Linux; created tablespaces, users etc; tuned for performance.
• Configured iscsi from the OS within the VM to connect directly to the SAN to get higher performance for Oracle (11g) and SQL Server 2008 databases; multipath & Round Robin load balancing configured at the initiator level from the OS to the Storage Device; JUMBO frames enabled on OS, switches and the storage device.
• Configured Oracle Secure Sun Global Desktop (similar to Citrix Xenapp) for Application access by the users; configured SSL certificates on Oracle Secure Global Desktop.
• Created, configured & cloned LUNs on Oracle Storage 7310; resolved performance issues & fixed major problem that impacted production VMs and users connecting to the Oracle Storage device; created users, share - cifs & nfs and monitors storage device for performance issues.
• Tested and upgraded FTP Servers to the latest versions.
• Upgraded Redcap application and MySQL database running on Ubuntu Linux to the latest version.
• Resolved problems with MySQL Database & changed parameters to fix issues that affected production users.
• Resolved user problems as high level support with regard to ldap logins to AD via Oracle Secure Global Desktop, User’s shares, FTP, sharepoint, Redcap etc.
• Configured NX3100 as iscsi target for VMWare infrastructure with JUMBO frames enabled and multipath Round Robin load balancing configured.
• Configured IOMega device as CIFS and NFS shares for Backups from the servers.
• ASA 5520 (dual node with failover) & 5505 - configured VPN users; ACLs for different networks as necessary; made changes to site to site VPN for extended network access; configured connectivity as necessary between internal and external servers or networks; Maintain and troubleshoot Cisco 3750 and DELL switch stacks.
• Configured Dynamic Disks on Windows Server where user data resides; extends partitions without any downtime or interruption for the server.

Confidential, CA 

Senior Systems/Network Engineer 

• Linux and Windows System Administration and Networking.
• Implementation and configuration of Fiber Channel and iSCSI SAN with multipath on Oracle Enterprise Linux for Oracle RAC with ASM using Netapps storage Appliance; NAS configuring CIFS for Windows Sharing, NFS for Linux and setting limitations using qtree. Installing new shelf disks for storage and configuring it with dual parity. Upgraded Data OnTap (Netapp OS) from version 7.0.5 to 7.2.6.1 for making it compatible for Fiber Channel SAN.
• Upgraded and migrated data from Bugzilla version 2.16 running on Linux with MySQL Database to latest version of Jira on Windows Server 2003 and Oracle Database.
• Configuration of VMWARE ESX server and virtual machine instances on it.
• Reconfigured and resolved problems of Replication between Windows Server 2003 Domain Controllers in two locations of the ATP Company - one at Brisbane and the other at Collocation in San Francisco.
• Worked on reconfiguring Distributed File System (DFS) and DHCP. Written Shell, Perl scripts for Linux and VB script and batch files for Windows for implementing and assigning various tasks like mapping drives, synchronizing directories between windows and between linux and windows, deleting older files, ftp-ing data from one place to another etc.
• Worked on rectifying problems with synchronizing the data between the ATP server and files distribution server of akamai at remote locations; configured rsync service on Windows as needed by ATP for automatically transferring contents between servers with different types of OS's i.e. Linux, Windows and Solaris; configured Rsync with SSH for synchronizing directories between ATP server and file distribution servers of level3 at remote location automatically without passwords (by using public and private keys).
• Installing, configuring and upgrading the Linux machines to its latest version. The latest Linux systems used were Red Hat Enterprise Linux 5 and Oracle Enterprise Linux 5 from Oracle. Worked and resolved issues on Red Hat versions 6.1, 7.1, 8, 9, Red Hat Enterprise Linux Advanced Server 3, Red Hat Enterprise Linux 4.
• On Linux, configured Rsync Server, Sendmail Server, Samba Server, Apache, FTP, NFS, VNC Server, iptables, NTP, LVM on various servers for specific functions; Creating Users and groups as needed and setting up permissions. Written Shell, Perl scripts and scheduled routine jobs using Crontab. Configured - SUDO for providing root privileges and access to normal users, port re-direction using iptables as need by developers; automatic startup and shutdown of certain programs including JBOSS as a service during the startup and shutdown of servers; Installed and configured SSL certificate from Network Solutions for the website running on two node Linux load balanced server group (Load Balanced using F5 - BIG IP).
• Used utilities like SCP, WinSCP, FTP for transferring files. Used SSH, Telnet for doing the management of Linux Servers mostly and also used VNC Viewer for doing remote administration using GUI. Compressed and uncompressed data as needed for ease of transferring and storing; Bonding (Teaming up) Network Interfaces for Load Balancing and Fault Tolerance. Resolved issues with Public and Private Key for password less transfer of data using Rsync, SCP etc;
• Resolved issues with regard to DtSearch, JBoss, Apache Jserv, java Applications servers, JDBC Thin client connectivity to upgraded Oracle Database etc.
• Worked to identify the configuration of the network setup at ATP as all the IT staffs were newly employed. Identified and done necessary changes on the Cisco Catalyst switches which were using different vlans.
• Made changes to the routing configuration between Brisbane Office and Collocation so as to enable proper communication between the two locations.
• Worked on Checkpoint software Firewall running on Linux machine to make necessary changes for access from outside and also between the Brisbane and Collocation at San Francisco. Helped and resolved connectivity and other issues that arose with the upgradation of the Network setup including the firewall from Checkpoint to Cisco ASA firewall with load balancing. Configured Windows  authentication to authenticate with the Active Directory for VPN clients connecting to Cisco ASA Firewall and for Cisco Switches and Routers login.
• Worked on re-directing the website which is called from outside on Windows. Worked on issues related to f5 (BIGip) load balancer configured for the website.
• Worked on migration of data from Livelink (8.1.3) on Sun Solaris and Oracle 8i to Windows SharePoint Service 3.0.
• Experienced working with different vendor Technical Support.
• Experienced in providing help to first line of technical support and direct support to Research customers/users.
• Installation, configuration and maintenance of all the Servers, systems/network infrastructure, software, devices and remote accessing tools on all the three offices (California, Hyderabad and Vijayawada)
• Planning and laying of the whole Network Structure in Hyderabad Office.
• Configuration & Maintenance of Domain Network Infrastructure which includes Domain Controllers, DNS Servers, DHCP, FTP, VPN, Certificate Servers etc. for California, Hyderabad and Vijayawada offices.
• Upgraded Exchange Server 2003 to 2007; Public Folders replicated from Exchange 2003 to 2007; Network Load Balancing implemented for Client Access Role (which includes OWA) on Exchange Server 2007; implemented Local Continuous Replication; implemented Microsoft Forefront Security for Exchange Server and implemented Anti-Spam feature; Exchange Server Outlook Web Access which is called from US, India and other locations is functioning through SSL implemented using Certificates from Company’s own Certificate Server.
• Implementation & Maintenance of important Web Applications such as Casetracker (ASP) and Timesheet (ASP.Net) and Company’s official Website (making necessary changes as needed on HTML coding); SSL Certificate implemented from 3rd party CA, Verisign for Casetracker and Timesheet Applications.
• Configuration and Maintenance of Cisco PIX firewall, Netgear Firewall and Wireless Routers and Cisco/Linksys Switches and Wireless Routers.
• Installation Oracle Applications on Linux and Windows
• Installation of Oracle 9i, 10g on Linux and Windows and SQL Server (into which casetracker and timesheet data are stored) databases.
• Installation of Oracle Applications on RHEL and Windows 2003 on Virtual Server, VMWare for various testing and training purposes.
• Used Linux Kickstart for automatic deployment of linux systems repeatedly for various testing and training environments for Oracle 11i Applications on linux over physical as well as virtual machines through NFS.
• Implemented replication of SQL Server Database from California Office to Vijayawada (India) office over internet which happens every 1 hour as part of the disaster recovery plan.
• Writing scripts for automating the functions at the OS level.
• Managing leading a team of professional employees

Confidential , Kerala, India

 Systems Administrator

Responsibilities:-

• Operating Systems used were Windows Server 2003, Windows XP Professional, Windows 98, Linux Redhat 9 and Fedora.
• Implementation, configuration and Maintenance of wired and wireless LAN connections covering a vast area, using Switches, LAN Extenders, Access Points and Wireless Routers.
• Maintenance and configuration of Cisco Router for internet using DSL WAN Connection which includes setting up access lists and IP address assignment for LAN and WAN interfaces.
• Responsible for implementing and maintaining Domain setup and Exchange Server 2003 Mailing System and VPN setup through the router.
• Implemented, configured and maintained partial Mailing System using postfix and dovecot on Fedora Core Linux.
• Writing scripts for automating for automating the functions at the OS level.
• Developed programs in vb.net