Summary:

• IBM certified system Administrator, over 6 years of experience as UNIX Administration in AIX and Over 6 year of experience in IT
• Performance Monitoring Tuning - iostat , vmstat netstat, nfsstat.
• Good experience in Hardware Management Console HMC
• Supported huge partitioning environment with 100 IBM p5-570 30 IBM p7-770 managed machine HMC.
• Strong technical background in Storage, Disk Management, Logical Volume Management LVM and logical partitioning.
• Troubleshooting skills with network protocols such as DNS, TCP/IP, SMTP SNMP.
• Integration of various network related services like NFS, NIS, DNS, LDAP, FPT and Samba Server.
• Experience in setting up different RAID technology.
• Install, configure, manage, NIM server and installing clients using NIM recourses.
• Monitor system logs and troubleshoot errors related to it.
• Configured the systems for TCP/IP Networking with the existing LAN.
• Experience in setting cron jobs on the servers.
• Experience in backup and restore activity.
• Management of User accounts, System security, maintaining file systems, disk space, process monitoring, performance monitoring and tuning.
• Strong experience in Installation, Upgrading, Patches, Migration, Configuration.
• Experience of managing, troubleshooting IBM P5, P6 and P7 series hardware.
• Administration of networking devices such as Routers and switches.
• Installation of SSL certificates Linux servers.
• Ability to handle multiple tasks and work independently as well as a team member.
• Proficient in System administration, System planning, co-ordination, commissioning, setting up security hierarchy and capacity planning.
• Experience in writing Shell scripts using ksh, bash, perl, for process automation of databases, applications, backup and scheduling.
• Worked on flexible hours for production, backup and on-call support for 24/7 environments.
• Ability to communicate effectively with all levels of management, and the client community.
• Provided clear ownership and resolution of incidents/faults logged against applications/systems supported by the Application Support team to agreed SLA's and KPI's.
• Expertise in providing the root cause for major/critical incidents, and where possible resolve or provide workarounds, suggestions and improvements to mitigate future incidents.
• Expertise in executing Installation Qualification IQ and Operational Qualification OQ validation before and after planned and unplanned outages to verify the functionality of the system.

Technical skills:

Professional Experience:

Confidential

AIX/UNIXSystem Administrator

Responsibilities:

• Experience in installing, configuring, implementing and supporting on IBM AIX P Series Servers, 5.3, 6.1, and 7.1 series and on UNIX, Linux.
• Strong knowledge and experience in Logical Volume Management LVM and Disk Management.
• Configured, deployed and maintained LPAR.
• Managed Paging space and performance related issues.
• Setup DR environment for tier one and tier two servers at DR site. This setup includes creating and configuring virtual clients LPAR, installing AIX images from existing servers and performing DR test.
• Successfully installed Open SSL and Open SSH on several servers.
• Backup Administration, File system Backup and Application Backup Operating System Backup through mksysb.
• Using Dump device facility, invoking dump, changing dump devices, estimating the dump and logging call with IBM to analyze the dump and fix the issues as per IBM suggestion.
• User management-Creating, maintaining, and removing users and groups. Security settings on user accounts and groups.
• Configuring interfaces, new devices installation and configuration. Removing the device and working with ODM entries that are related to devices.
• Working with NFS, configuring NFS shares and mounting NFS file systems and working with related issues and fixes.
• Maintained availability, increased capacity performance of production machines by upgrading their hardware Disks, CPU, memory, I/O board, power cooling unit, mother board etc. firmware.
• Monitoring systems, CPU, memory and disk utilization using topas, sar, vmstat, netstat.
• Configuring volume groups, logical volumes, file systems and working with these and fixing any issues that occur.
• Mirroring and unmirroring rootvg, Exporting and importing volume groups
• Backups Daily, weekly, monthly incremental and complete backups.
• Troubleshooting booting related issues, creating boot records, working with system maintenance mode, accessing rootvg in system maintenance mode, recovering root password, fixing booting related issues, working with boot list.
• Backup and restoration from the existing backups.
• Troubleshooting booting problems, working with boot list, bosboot commands, fixing file systems integrity issues by running fsck. Performed troubleshooting, resolution and problem analysis.
• Worked on System Management Services - SMS and changing boot list order etc., accessing rootvg of the machine that will not boot and fixing any file systems mounting issues etc.
• Finding hardware and software errors using errpt and taking necessary actions to fix if any errors occurred. Running snap utility on servers to know server issues and sending the output to IBM for analysis.
• Disk replacement techniques, replacing fault disk mirrored or non-mirrored . Worked on the issues related to volume management, file system management.
• Perform troubleshooting, resolution and problem analysis.
• Provided server and application administration to support business objectives in IT infrastructure environment.
• TCP/IP Configuration like assigning IP addresses, configuring network interfaces, assigning static routes, hostnames etc
• Setup, maintain and Integration of various network related services like NFS, NIS, DNS, FPT and Samba Server.
• Use Bash/Korn shell and perl scripts to monitor system resources and system maintenance.

Environment: IBM AIX v5.1, v5.2, v5.3, v6.1, p5-570, p6-690, p7-770, p7-780, LPAR, DLPAR, Dual Virtual I/O, HMC, NIM, NPIV,TSM, SAP, Oracle, IBM Tivoli storage request manager,XIV-GEN2 GEN3.

Confidential

UNIX/LINUX System Administrator

Responsibilities:

• Installation, configuration, and administration of Red Hat Linux systems.
• Setup, maintain and Integration of various network related services like NFS, NIS, DNS, FPT and Samba Server.
• Installed and configured VMware ESX server instances for virtual server setup and deployment. Responsible for creating VMware virtual guests running on Linux, Windows.
• Configured the systems for TCP/IP Networking with the existing LAN.
• Experience of using mysql and rsyslog deployed a custom syslog reporting solution for system alerts and notifications.
• User management-Creating, maintaining, and removing users and groups. Security settings on user accounts and groups.
• Installed and maintained the Websphere Application Server and Apache-Tomcat server in Linux Platform.
• Maintaining NFS, Samba and NIS on RedHat servers.
• Use Bash/Korn shell and perl scripts to monitor system resources and system maintenance.
• Evaluate and install new software releases, system upgrades, and patches within a configuration management framework.
• Automated system management tasks like user account creation, file system size monitoring, monitor system resources and system maintenance using Shell, and Perl scripts.
• Worked with DBAs on installation of Oracle database, RDBMS database, restoration and log generation. Perform security patching of Linux servers.
• Provide support for more than 150 Linux servers in a large environment.
• Performance Monitoring Tuning - iostat , vmstat netstat, nfsstat
• Handling problems or requirements as per the ticket Request Tracker created.

Environment: Red Hat Enterprise Linux 4/5/6, Sun Solaris 8/9/10, Oracle 11G, HP UX, HP Proliant DL 385, IBM AIX , Weblogic, Oracle RAC/ASM, EMC Storage SAN, Autosys ,MS Windows 2003 server.

Confidential

System Administrator

Responsibilities:

• Building Physical as well as Virtual VMware Servers.
• Building Linux servers web-logic application, apache, DB servers etc in large quantity as per EDC and Non EDC production requirement as well as App/Dev requirement.
• Perform day-to-day system administration task on RedHat servers.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Mass Build of Red hat Linux OS servers using kickstart automation application.
• Installation of Oracle 11g and Sybase open-client, Apache 2.x on Linux environment.
• Software package and patch administration, involving adding and removing software packages and updating patches.
• Creating new file systems, managing and checking data consistency of file systems.
• Created disk groups, volumes, volume groups and RAIDs using VERITAS Volume Manager.
• Responsible for data backup and restoration services.
• Handling problems or requirements as per the ticket Request Tracker created.
• Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Maintained proper documentation of all the activities carried out during the project.

Environment: Sun Solaris 10/9/8, Redhat Linux 5/4, Oracle 11g, SUN Servers, SUN Fires, Linux, Jump Start, Shell Script, Autosys, Veritas Volume Manager VVM , LDAP, EMC Storage SAN, Veritas Cluster Server VCS , VMware servers, ,Websphere.

Confidential

System Administrator

Responsibilities:

• Installation, configuration, and administration of AIX power systems.
• Configured the systems for TCP/IP Networking with the existing LAN.
• Experience working in AIX 5.2, 5.3, 6.1 and 7.1 OS versions for external client
• Created mount points for Server directories, and mounted directories on the Servers.
• Managed shared NFS files system, mounting and unmounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
• Installed patches and Packages as needed installed and configured new hard drives and memory.
• Troubleshooting and analysis of hardware and software failures for various UNIX servers core dump and log file analysis .
• Performed Performance Monitoring Tuning - iostat , vmstat netstat, nfsstat and TOPAS.
• Performed patching, backups on multiple environments of AIX and Linux
• Developed Korn shell scripts for admin tasks like customizing user environment, performance monitoring and Responsible for cron job management and Performed disaster recovery management procedures.
• Managed file permissions ownership for important directories files.
• Administration responsibilities include user, group, disk, and security management, File sharing Permissions.
• Created LPARs, WPARs in AIX 6.1 using the HMC.
• Performed Installation, up gradation, Patches, Migration, Configured, Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning on UNIX and AIX Systems.
• Monitored System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
• Software package and patch administration, involving adding and removing software packages and updating patches.
• Configuration and administration of LDAP, NFS and NIS in Linux and also implemented Samba for sharing of resources between Linux and Windows environments.
• Maintained proper documentation of all the activities carried out during the project.

Environment: IBM AIX v5.1, v5.2, v5.3, v6.1, p5-570, p6-690, p7-770, p7-780, LPAR, DLPAR, Dual Virtual I/O, HMC, NIM, NPIV,TSM, SAP, Oracle, IBM Tivoli storage request manager,XIV-GEN2 GEN3.

Confidential

AIX/UNIX System Administrator

Responsibilities:

• Configuration of LVM Logical Volume Manager to manage volume group, logical and physical partitions and importing new physical volumes.
• Configuration and administration of NFS and Samba in Linux and AIX.
• Documented the standard procedure for installation and deployment of logical volume manager.
• Installation, configuration, support and security implementation on following services: DHCP, SSH, SCP.
• Maintained and monitored all of company's servers' operating system and application patch level, disk space and memory usage, user activities on day-to-day basis.
• Managed file permissions ownership for important directories files.
• Administration responsibilities include user, group, disk, and security management, File sharing Permissions.
• Performed Performance Monitoring Tuning - iostat , vmstat netstat, nfsstat and TOPAS.
• Performed patching, backups on multiple environments of AIX and Linux
• Attended calls related to customer queries and complaints, offered solutions to them.
• Worked with DBA team for database performance issues, network related issue on Linux Servers and with vendors for hardware related issues.
• Responsible for setting cron jobs on the servers.
• Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
• Handling problems or requirements as per the ticket Request Tracker created.
• Participated in on-call rotation to provide 24X7 technical supports.
• Configuration and troubleshooting - LAN and TCP/IP issues.

Environment: IBM AIX v5.1, v5.2, v5.3, v6.1, p5-570, p6-690, p7-770, p7-780, LPAR, DLPAR, Dual Virtual I/O, HMC, NIM, NPIV,TSM, SAP, Oracle, IBM Tivoli storage request manager,XIV-GEN2 GEN3.