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Manager Active Directory

Memphis, TN
October 29, 2018

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Venkata Mantena.

Linux Administrator / Engineer.



Unix/Windows System Administrator with 8+ years of experience in Admin tasks, Installation, Configuration, Upgrading, controlling and monitoring of Sun Solaris (8/9/ 10/11), Red Hat EL (RHEL) (4.x, 5.x, 6.x and 7.x), CentOS (5/6/7), SuSE EL [Ö] AIX (5.x/6.x/7.x), HP-UX (10.x/11.x), VMware ESX/ESXi 4.x/5.x/6.x and Windows 2003,2007,2008 R2,2012 R2 and 2016 server Models.

Experience maintaining virtual server environment using VMWARE ESXi, VSphere and VCenter.

Experience on AWS and Azure Cloud technologies.

Experience on Brocade switches and VitalQIP.

Experience on provisioning, allocating the storage to linux and windows instances and doing other security relevant configuration in these instances.

Experience installing, configuring, administrating, troubleshooting, tuning, security, backup/recovery and upgrading Linux (Red Hat & SuSE) in large environments

Experienced in Installing, configuring and administering Red Hat Linux AS /4.0/5.x/6.x & 7.x, Dell, IBM and HP x 86 Servers

Experience performing LVM tasks like creating Physical volumes, Volume groups, Logical Volumes and file system

Managing and Monitoring the JVM performance by WebSphere Heap Size, garbage collection

Experience on Splunk and ELK.

Extensive experience in Shell scripting using Bash, Python and Powershell

Experience in Active Directory, GPOs, DNS, DHCP, File & Print Server, IIS, FTP

Experience in transferring files securely Via the Network – SCP

Performed migration of Virtual Machines and Virtual machines files using VMotion and Storage VMotion

Experience installing and updating packages from the network, Remote Repository, or Local Filesystem

Good Knowledge in bash (shell)/Perl/Python/ scripting

Strong Working Knowledge of Network Protocols such as TCP/IP and UDP

Datacenter Operations including hardware, software setup monitoring and troubleshooting

Good exposure to Storage Solutions like SAN, NAS.

Experience on NetApp SAS, SATA, EMC VNX, Hitachi and Pure Storage.

Windows Active Directory configuration and Management

Experience on Nagios configuration, Monitoring and services configuration

Good Knowledge on Puppet/Chef/Ansible configuration and programming

Good knowledge on Jenkins/JIRA/Docker/Rundeck/Maven/Git/GitHub/Sonarcube Nexus and other DevOps tools configuration and working on issues if any in the configuration

Experience in Veritas NetBackup Management, scheduling the backup policies and loading the tapes for backup and unloading the tapes

Experience in patch management tools like Bigfix.


Operating Systems REdHAT, CentOS, Ubuntu, IBM AIX, Windows XP /Windows 7/Windows2003server,Windows2008/2012Server. Scripting language Shell, Python.

Protocols TCP/IP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, WAN, SMTP, LAN, FTP/TFTP.

Web Servers Webshare, Wildfly(JBoss), Apache Tomcat Server.

Databases MS SQL Server, MySQL, Oracle.

Third-party Software VERITAS Volume Manager, LVM, LDAP, SSH

Configuration mangers Puppet, Chef, Jenkins

Work Experience:

FeDex, Collierville, TN. Feb 2017 to present

System Administrator.

Serving as a System Analyst, responsible for analyze and design Server, Virtualization or Cloud Infrastructure solutions as per the requirement of organization.

Support, Enhancement and Standardization of existing IT infrastructure Server environment.

Ensure all the IT Server equipment is under monitoring and the process of equipment health check and incident reporting is automated.

Address customer issue via standard ITIL process such as Incident management, Change management, Service catalog request and Problem management.

Perform root cause analysis based on reported incident and initiate remediation process.

Expand or modify system to serve new purposes or improve work flow.

Analyze information processing or computation needs and plan and design computer systems, using techniques such as structured analysis, data modeling and information engineering.

Designing end to end infrastructure solution, aligned to heterogeneous platforms, Servers, networking, virtualization and cloud based infrastructure (UNIX).

Reduce manual efforts with automation of repetitive Server/Client administration task and activities.

Develop and Place appropriate support tools for centralized user management, server management, yearly Patching and configuration management (puppet)

Develop and design scripting solution based on the requirement (shell and python etc.,)

Gather new requirements for different modules, drawing out a plan for releases of the enhancements for the application requested by the users and planning work for subsequent releases

Determine computer software or hardware needed to set up or alter system.

Test, maintain, and monitor computer programs and systems, including coordinating the installation of computer programs and systems.

Monitor all customer implementation deliverables including installation, configuration, and testing of Physical, Virtual and Cloud Infrastructure components (UNIX).

Execute periodical disaster recovery drills and review organization Disaster Recovery strategies.

Execute and run periodical failover and maintenance activity.

Making sure the business continuity from the Infrastructure computer system end.

Develop, document and revise system design procedures, test procedures, and quality standards.

Creates Statements of Work and documentation for Build, Decommission and DR plan for Infrastructure Server environments.

Creating Test design docs for new enhancements and QFE and Hotfixes for the existing system

Author, review and update documentation of procedures and methods as needed.

Creates standard procedure documents for each task.

Use a version control procedures such as Git and SVN repositories.

Define the goals of the system and devise flow charts and diagrams describing logical operational steps of programs.

Assist with the full cycle implementation, perform functional and system analysis as per client requirement. Also, evaluate and recommend new/improved process as per client specification.

Evaluate and prepare recommendations for system improvements, optimization, development, and/or maintenance efforts.

Performs proof of concept for all work flows such as build, migration and decommission.

Work with FedEx on projects related to Server build in order to create supportable solutions that meet both the customer requirements.

Advising the client on managing future IT needs.

Leading performance management related activities and provide recommendations for preventing actions to avoid issues.

Lead the efforts on performance analysis and improvement or optimization plan.

Supervise computer programmers or other systems analysts or serve as project leaders for particular systems projects.

Read manuals, periodicals, and technical reports to learn how to develop programs that meet staff and user requirements.

Hold meetings with the Project Manager, technologists, and system administrators to schedule, organize, and resolve technical issues.

DuPont, Wilmington, DE. May 2016 to Jan 2017

Linux Administrator.


As part of a new generation in propellants, DuPont continues its commitment to the pharmaceutical industry by offering a family of non-ozone-depleting alternative propellants for pharmaceutical applications. Dymel pharmaceutical propellants use DuPont safety traditions, science, technology, channel strength and global reach to provide marketers the ability to meet regulatory requirements, achieve unique product performance goals and grow their markets.

Responsibilities/ Deliverables:

Installing Red Hat Linux using Kickstart/PXE booting and applying security polices for hardening the server based on the company policies.

Installation, configuration and testing of Double-Take Share for Data Transfer for Solaris and AIX Servers.

Experience in installing, tuning and troubleshooting Apache, Tomcat and Web Sphere application servers.

Used Logical Volume Manager for the management of Volumes including creation of physical and logical volumes on Linux

Experience in supporting Windows Cluster server running 2-4 nodes on Windows 2003/2008 & 2012 supporting applications like web servers, SharePoint and Active Directory environment

Strong Experience on Migrating from Windows 2003/2008 - 2012 R2 environments.

Involved in migration of project from one flavor to another one.

Generated python scripts to manage the Automatic backup of the EC2 - ELB volumes and cron the job to create the snapshots of the volumes with the AWS API for EC2 Instances storage.

Implementation of Windows 2008/2012 domain architecture.

Provisioning the Windows and Linux servers in AZURE cloud and implementing the service fabrics, creating the Resource group and assigning the permission to resource group.

Installation and configured SLES 9, 10 &11, Red hat 4.x,5,6 & 7 on Dell Power Edge Blade servers using Kickstart with PXE for LAMP (Linux, Apache, MySQL and Perl/PHP) installations

Worked on User administration setup, maintaining account, Monitor system performance

Activities includes user administration; startup and shutdown scripts; crontabs, file system maintenance, backup scripting and automation using Perl, shell scripting (bash, ksh) for Red Hat Linux and AIX systems

Performed application installation and management on IBM AIX and Linux servers for applications like Web

Written python scripts for nagios monitoring services as per the application requirments

Responsible for continuous integration (CI) and continuous delivery (CD) process implementation-using Jenkins along with python and shell scripts to automate routine jobs.

Used Python AWS SDK for dynamic creation of EC2 instances.

Adding patches to keep the servers updated against bugs present in the operating system as well as other applications like VERITAS Storage Foundation, Web Sphere and Oracle

Identifying the Critical applications for System resource utilization (CPU, Memory, Threads etc.) & JVM heap size was monitored using AppDynamics.

Used to tune the performance of WebSphere application server (configure caching, Queuing, pooling, tuned JVM heap size)

Worked on Splunk configuration and log/event management.

Setting up the configuration to the newly built servers in nagios and setting up the new services based on application team requirement using bash script

Setting up the backup policy for the servers from Veritas Netbackup and from storage level with Netapp snapshots.

Worked extensively with Active Directory Services, Web Services (IIS Servers), DNS, DHCP, SQL Database Servers and Business Application Servers

Creating the LUN from the Netapp storage and assigning the LUN to VMware ESX servers to create datastore

Increasing the LUN size from storage and increasing the same from the datastore level

Configuring the snapshots for the LUNS in Netapp NAS storage and extending the volume size when the volume reaches to its threshold limit

Provisioning the Linux/Windows instances in the AWS cloud platform and taking the AMI's / snapshots for those instances

Configuring the security of the servers in AWS Cloud

Install and configure SSH to enable secure access to the servers

Creating User Accounts and Groups in Active Directory

Installing and Configuring Windows 2003/2008 Servers

Remote Desktop Monitoring using Microsoft Terminal Services/Client

Co-ordinating with vendors for any hardware relevant issues and resolving it with combined efforts

Interacting with all the team members both in offshore as well as with the client in maintaining good customer relationships

Environment: Red hat EL 5.x,6.x & 7.x, Windows Server 2008/2012/2016, CISCO UCS /HP / DELL Standalone Servers, Python, CISCO UCS 5100 Blade Servers and AWS Cloud Environment.

American Express, Fort Lauderdale, Fl. Sep 2015 to Apr 2016

Linux/VMware System Administrator

Responsibilities/ Deliverables:

Responsible for Installations, Configuration, Deployment, Administration, Maintenance and Troubleshooting Server.

Created User, Groups and File Systems as per database requirements.

Configured and troubleshooting NFS, NIS, NIS+, DNS, DHCP, FTP, LDAP, and Samba, Apache servers in Linux Servers.

Performed Memory and Swap management to improve optimization and performance of the servers.

Experience in installing, configuring the Volume/File system management using Veritas Volume Manager, Logical Volume Manager (LVM), Solaris Volume Manager (SVM), ZFS Filesystem Management and VERITAS File System.

Experienced in User and Group administration and security issues.

Execute Shell script in bash to create multiple users.

Written python scripts and modules for patching and regular software installations in the environment.

Performed upgrades of Packages and Patches in Solaris and Linux.

Installation, configuration and management of Oracle11g 12c & MySQL database servers.

Regular disk management like adding and replacing hard drives in existing servers and workstations. Creating partitions according to requirements, creating new file system or growing existing one over the hard drives and managing the file system.

Patched different software using RedHat Package Manager and YUM.

Upgraded Linux Kernel using YUM.

Performed all LVM and file system tasks like creation of Logical volume and file system, Mount a file system, Modifying size of a Logical Volume and file system, Removing a file system.

Install, configure and renewal SSL certification for site.

Monitor performance and work with Team members and clients on resolving complex troubleshooting issues.

Environment: Red Hat Enterprise Linux 6/7, Logical Volume Manager, Veritas Volume Manager, apache and oracle database.

Cardinal Health, McGraw IL 60085. Jul 2012 to Aug 2015.

Linux System Administrator.

Description: Pharma a Modernization

Create a customer-centric experience and achieve best-in-class processes by effectively transitioning key sales, customer service and billing systems to modern, flexible, rules-based It solutions.

Responsibilities / Deliverables:

Assisting in planning and implementation of virtual environment.

Creating a procedure for the P2V migration.

Analyzing the servers to be virtualized or migrated.

Managed a decent cloud storage environment with Vrealize cloud environment, performed backups and Audit reports based on user log information from Vrealize.

Used VMware vCenter, created DataCenter Environment by creating VMware clusters, adding ESX hosts in the clusters, and implemented HA and DRS.

Performed physical to virtual (P2V) migrations for approximately 500 physical servers utilizing VMware Converter.

Daily provisioning and optimization of storage environment with NetApp FAS3050, FAS3160, FAS270 .

Administrating multiple labs in VMwareLab Manager.

Worked on deploying Linux SuSE 10, 11 and 12 versions.

Upgraded from Linux SuSE version 10 to 11 and from 11 to 12.

Deployed RDSH in windows 2008 and windows 2012 server versions.

Worked over RDSH in updating operating systems from windows 2008 to 2012.

Installed and upgraded Horizon Client suite environment to VMware horizon 6 version.

Involved in installing/configuring and troubleshooting VMware Lab Manager and administrating multiple labs in Lab Manager and dealing with Lab Manager Issues.

Troubleshooting &testing of VDI instances.

Involved in built and deploy the windows XP and windows 7 golden image for the VDI environment.

Performed Audit report generation using Power Shell scripting.

Used HP C7000 blade enclosures with installing multiple layers of HP blade servers.

Upgraded from HP C7000 server to HP C7000 platinum server, which improve transmission speeds at exponentially high level.

SCCM Configuring and installing enterprise edition and SCCM backup, maintaining redundancy.

Upgrading system severs on SCCM from 2007 to 2012, SCCM R2 to SCCM R2 SP1 at client level server.

Managed EPIC infrastructure, regarding Health care management.

Designed work flow and data base architecture using EPIC

Reduced CPU load on NetApp filers from 90% to 55% by optimizing volume configuration.

Planned and performed a head swap from a NetApp FAS3050 to a NetApp FAS3160.

Installing, configuring and troubleshooting VMware View.

Performed tons of V2V Migration.

Performed operation on Team city on tool building at the application level.

Worked on SCSI internet protocol commands and perform data transfer via serial communication, worked on SCSI versions such SCSI-FCP and SCSI-UAS.

Discussing with the user and team and scheduling migration and monitoring migration.

Creating a workflow for Pre/Post Migration.

Perform operational turnover on all system implementations.

Migrating machines either P2V or from Microsoft Hyper V environment to VMware environment

Worked with Servers like Windows 2000, 2003, 2003R2, 2008, 2008R2.

Troubleshoot outlook problems and managed users archives in network.

Environment: VMware ESX 4.0/3.5, VSphere 4.0, Windows Server 2008/2003, Windows xp/vista, Active Directory 2003, SQL Server 2008/2005, HP Proliant Servers, HA/DRS, SCCM, Linux SuSE

D.V. Polymers India. May 2011 to Jun 2012

System Administrator


D.V. Polymers India (P) Ltd. aims to be a prominent global player and a national leader in the field of PTFE products and Services, introduction of value added solutions for its honored customers. It is getting set to become a one stop shop for PTFE Products and services, scaling newer heights of technology, setting quality benchmarks for all its products and services, and ensuring satisfaction to all of them associated with the organization”

Responsibilities / Deliverables:

Providing on line support for Sun/Linux servers in a Data Center Production Environment

Planning, installing and configuration of operating system on new Sun/HP Servers

Configured System imager for Linux Servers and used it for Cloning, software distribution and OS updates

Installations using PXE boot, Maintenances and troubleshooting hundreds of Linux Servers

Adding/expanding new storage to existing/new systems using LVM, VERITAS Volume management VXVM and Vxfs on Linux/SUN servers

Worked on Solaris servers supporting all the OS administration, application and hardware issues

Very good working experience on Redhat Satellite Server upgrading and patching

Building Linux servers by using VMware ESX 3.0 and also involved in channels and pushing the packages in Redhat Satellite Server

Implemented upgrade of servers using Redhat Satellite Server

Planning, documenting and supporting high availability, data replication, business persistence, fail-over, fail-back using VERITAS Cluster Server in SAN environment

Setup NFS file systems and shared them to clients

Troubleshooting and configuring NAS and NFS mount points

Troubleshooting network, application, and server related issues

Scheduling of automatic repetitive Jobs, and Shell Scripts with Crontab

Monitoring Virtual memory, Swap management, and Disk and CPU utilization by using various monitoring tools

Implemented rapid provisioning and life cycle management for Redhat Linux using kickstart and puppet

Improved Linux OS deployment and management by creating customized kickstart scripts and installing puppet

Used puppet for central management of Linux configuration files and software package management

Implementing RAID 0, 1 and 0+1 levels using VERITAS Volume Manager

Created RPM packages using RPMBUILD, verifying the new build packages and distributing the package

Installed Red Hat Linux on Intel Machines, Configured File Systems and Raw ñ Devices

Installed various RPMS on Linux.

Involved in mass migration of data form old EMC Storage subsystems to new Subsystems

Installed and Configured VERITAS Net backup client and advanced client software’s in Production servers

Administer, maintain and troubleshoot EMC CLARiiON arrays

Creating volumes, LUNs and implementing different RAID levels on the same

Configured and created snapshots of clones of LUNs using EMC Snap View

Upgrade and Maintain VMware ESX / ESXi and virtual sessions

Closely worked with VMware team to support Production, Development and Test Environments and also make sure uptime above 99.99%

Use HPSM (HP Service Manager) to manage changes and incidents

Work closely with Storage and Network teams to ensure highest level of dependability across VMware infrastructure

Troubleshooting Issues related to ESX host, vCenter, HA (High Availability), DRS, and VMware

Creating and Managing resource pools for Virtual Machines

Monitoring and managing performance of ESX servers and Virtual Machines

Using Virtual center server for HA, DRS and vMotion

Working on Migration concepts like vMotion and Cold migration

Creation & Troubleshooting of Virtual Network (StdVswitch / VDS)

Interacts directly with executive level management for internal tasks and projects

Design and implement systems, network configurations, and network architecture, including hardware and software technology, site locations, and integration of technologies

Test, maintain, and monitor computer programs and systems, including coordinating the installation of computer programs and systems


SARADHI :484-***-****,

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