PROFESSIONAL SUMMARY:

• Dynamic professional with more than 7 years of experience in IT projects of healthcare, Technology, Financial industry. Proven track record of UNIX system administration especially in IBM AIX/Linux domain; with the ability to assess needs and implement creative solutions that deliver sustainable results.
• Extensive experience in Administration of AIX 5.1, 5.2, 5.3, 6.1. 7.1.
• Automated many jobs using scripting such as MKSYSB, Health check, configuration details etc
• Having good understanding in SAN and TCP/IP architecture including hardware knowledge in power systems.
• Provided support to Aix servers version 5.3, 6.1, 7.1 on Blade center, P590, P595, P550, P690, P650, p7 - 770,p7-780 AIX servers, LPAR, DLPAR, POWERVM.
• Hands-on experience with installing AIX on LPAR, VIO server and client using NIM.
• Experience with SMIT, LVM (Logical Volume Manager), and Mirroring, User & System
• Resource management, Paging Space management and job scheduling.
• Good understanding of error logging subsystem and Performance Monitoring tools like topas, vmstat, iostat, sar, netstat on AIX.
• Extensive knowledge of Installation, configuration and maintenance of HACMP V5.4, Power HA v5.5, v 6.
• Extensive experience in all Kind Of Works Of VIO Servers And Clients Installations, Configurations, Maintenance and Troubleshooting NIM.
• Troubleshooting, replacing all Kinds Of Cards Ex: Ethernet, SCSI, Dims Memory,
• Cables, Configuration of P Series Power 5 and Power 6.
• HMC Configuration and Setup, Trouble Shooting. Advance System Management (ASM).
• Configuration of Raid Levels.
• Experience in installing, configuring, managing, maintaining and developing AIX
• Systems, Linux (Red Hat), Windows 2003 server and Solaris Expertise in file system concepts like LVM, SVM, VxVM. Creating new file systems, increasing and decreasing file systems, mounting file systems, un mounting file systems and troubleshooting Disk space issues.
• Experience in writing Shell scripts using bash, Perl, for process automation of databases, applications, backup and scheduling. Experience in Shell scripting to manage daily administration and Backup.
• Developed Korn and Bash shell-scripts to automate routine activities. Automate and schedule batch jobs using CRONTAB.
• Knowledge of networking (TCP/IP, Ethernet), NFS, DHCP, SMTP and RAID. Performed troubleshooting NFS, NIS, Samba, DNS, DHCP, LDAP, Mysql and network problems.
• Installed Configured and maintained NIM Server, created Spot, LPP source and resource on NIM Server, done many migration, upgrades and installed software using NIM. Used Alt disk migration to migrate server from 5.2 to 5.3 TL8 and also to Aix 6.1, did Alt Disk Clone for rootvg.
• Experienced with AIX OS Migration from version 5 to 6.1 using Alt disk as a best practice. NIM (Network Install Management) set up, Performing a NIM installation, troubleshooting. Experienced with NPIV configuration in the VIO environment.
• Perform Real time troubleshooting of VMware, windows Server and Network.
• Experience with Technology level upgrades, Service pack upgrades using alternate disk method.
• Working on building and configuring the dual VIO servers V2.2.0.10 on P7 -740 with SEA with NPIV for SAN boot on LPARS on the IBM P series and Blade servers
• Preparation of Logical Volume Manager (LVM) with new san luns, LUN online migrations using pvmove and LV mirror commands on Linux servers.
• Setup Internet load balancing on Multiple ISP, Firewall, Port forwarding, IP routing using IPTABLES.
• Experienced in supporting database systems including Oracle, MySQL on Linux/Unix, and Windows environment.
• Extensive experience in HACMP, Virtualization, NIM, Security remediation/critical assessments, disaster recovery, performance tuning, SAN and troubleshooting.
• Experience in Installation, administration and configuration of VIOS and VIO client LPAR'S through HMC.
• Involved in hardware migration of servers from p5 to p6 & p7
• Built Power HA 6.1 clusters and migrated servers with AIX 6.1.
• Expertise in Installation, Configuration & Troubleshooting VMware ESX, VSphere 4.0/5.0, Virtual Center 5.0 Servers.
• Extensive experience in Multipath and Bonding in Linux. Experience in FC, iSCSI SAN, NAS, NFS storage and RAID concept .
• Experience in installation and tuning of Web servers/Web application for Java on Linux.
• Monitoring and managing file system usage, hardware and system process failures. Planning and provisioning of hardware, storage allocation and network configurations.

TECHNICAL SKILLS:

Operating Systems: IBM AIX (4.3, 5.1, 5.2, 5.3,6.1), Linux (RedHat 5.x 6.x, SUSE), Sun Solaris 2.5/2.6/7.0/8.0, 9, Confidential -UX 1i windows3/00/NT4.0.

Hardware: IBM RS/6000, IBM p-Series, IBM blade servers (HS20,HS21,HS40)V80 V800 andV3800,Compaqservers, Sun Microsystems SPARC&ULTRA servers/workstations (U5, U10, U20, E450,E3500,E6000,E10K), IBM PCs, SCSI and IDE architectures, backup DLT tape drives.

Application Servers/ Web Servers: Web Sphere Application Server 3.5/4.0/5.0, WebLogic4.x/6.x, Netscape Application Server2.1, JBOSS, HTTP Server1.3/1.2, IPlanet Web Server 5.1/6.0, Netscape Enterprise Server, IIS 4.0/5.0, MQ Series, Apache.

Networking: TCP/IP, DNS, SSH, DHCP, Cisco Routers/Switches, and LAN.

Programming Languages: JavaScript, HTML, JAVA, C, VB, Python, Perl and Shell programming.

Databases: Oracle 8i/9i, DB2, MS SQL SERVER 7.0/2000, Sybase.

Tools: HACMP, Veritas Volume Manager, Veritas Net backup, Veritas File System.

WORK EXPERIENCE:

Confidential, Scottsdale, AZ

AIX / Linux Administrator

Responsibilities:

• Installed, upgraded and configured AIX Servers using NIM Master and Red hat Enterprise Linux 5/6 using Kick start servers.
• Installed, configured and maintained IBM AIX 5.3,6.1, 7.1 and upgraded to higher levels with an environment large as 400+ AIX servers
• Planning, configuring storage using LVM on AIX 7.1, 6.1, 5.3, 5.2
• Install AIX 7.1 on new IBM pSeries hardware (p730, p750, p760) utilizing NIM resource server as well VIO server configurations.
• AIX and VIO Server administration of p-series p770, p590, 570, 550 Servers.
• Creating Logical Partitions of VIO Servers and VIO Clients on pSeries frame and assigning processor, memory and Ethernet adapters to VIOS and assigning memory and processor to VIOC (LPARS).
• Renaming Logical volumes, JFS log, VG names, assigning new major numbers, VARYOFF VG, export VG and import VG with new major numbers.
• Monitored the systems and administered Servers for day-to-day problems, patches, user administration, and hardware failure, monitoring log files, backup, and software up gradation, configuration changes and documentation.
• Adding new LUNs and NFS file systems on the running production PowerHA (HACMP) nodes.
• Execute server administration tasks Performed fine tuning, Kernel debugging, process scheduling, disk and file system I/O, kernel internals, TCP/IP communications.
• Installed and setup new PSeries hardware, including connecting to HMC, SAN storage and Ethernet switch.
• Installed and configured mirroring of rootvg.
• Responsible for Host based migration and Storage virtualization
• Migration of physical to virtual environment of AIX systems (P2V) and also migration of Virtual to Virtual (V2V) of LPAR migration from one hardware to another.
• Migrated numerous LPAR’S from Aix 5.3 to Aix 6.1, and Aix 7.1. Upgraded Aix 5.3 server to TL 11.Aix 6.1 severs to TL 8 using NFS mount and alt disk.
• Installed and configured Web sphere Application Servers, SAP, DB2, Oracle etc. on Linux and AIX
• Experience in writing Shell scripts using bash, Perl, for process automation of databases, applications, backup and scheduling. Involved in developing custom scripts using Python, Perl & Shell (bash, ksh) to automate jobs.
• Network configuration for hosts file, interfaces and net masks, IP address, bonding configurations.
• Installation and configuration of SCSI/ISCSI devices/Luns on Linux environment.
• SAN/NAS/NFS allocation from storage array to required applications on physical and virtual environment.
• Experience in connecting to an EMC disk subsystem with Powerpath and MPIO. Coordinating with SAN team for allocation of LUN's in order to increase file system space. Troubleshoot SAN issues with EMC Symmetrix and Clariion.
• Configured the LUNs assigned by the storage administrators, and managed Volumes using Logical Volume Manager (LVM) on Linux.
• Managing various scripts to start up and shutdown databases and SAP systems.
• Provide 24*7 supports for division and SAP/DB environment.
• Facilitate problem resolution/ticket closure (Coordinate with end users or representatives, systems designers, systems integrators, and suppliers and vendors.

Environment: Operating Systems: AIX 7.1, 6.1, 5.4, 5.3, 5.1. LINUX - Red Hat Linux 5.x, 6.x, 7.x, OEL 5.x,6.x. Hardware: IBM Power 5, 6, 7, Confidential ProLiant, DL-360, 380,580,980 G6/7/8/9. HPSC, Veritas Volume Manager, VIO, HMC, Power HA, NFS, NIS, LVM, Linux, Shell Programming, VMware-VSphere, IBM WebSphere V6.1/5.1, TSM, App Server, DB2 ESE, Oracle RAC.

Confidential, San Jose, CA

Unix/AIX Admin

Responsibilities:

• Installation and configuration of NIM master server and clients.
• Migration of AIX OS from to 5.1, to 5.2 to 5.3 and 5.3 to 6.1 on P Series servers.
• Migration of AIX Systems from old p4, p5 to p6 hardware.
• Experience working on P550, P560, P595, P570, P575, P720 and P740.
• Experience in working with Live Partition Mobility to perform migration from one frame to another.
• Configuring I/O drivers for Power 720 and Power 740 servers.
• Racking and Stacking of P Series and Blade Servers.
• Installing Power VM on P520, P720 and P740 boxes.
• Setting up Dual VIO on Power 740 Boxes.
• Installing Aix and Linux Servers on Power VM Environment.
• Experience in MICRO-PARTITIONING on P series servers.
• Configuration of HACMP 4.5, 5.1, 5.2, 5.3 as well as performing failover and failback of
• HACMP Clusters on a regular basis as per the application requirement.
• Experience in Migration of HACMP 4.3.1/4.5 to 5.1 and 5.1 to 5.2, 5.3 using Node-by-
• Node migration without changing the cluster setup.
• Installation, administration and configuration of VIO Server and VIO client LPAR’S through HMC.
• Experience in performing DLPAR on VIO servers.
• Experience in working with Shared Ethernet Adapter, Link Aggregation and NPIV concepts associated with VIO server technology.
• Responsible for creating and managing user accounts, security, rights, disk space and process monitoring in Solaris, CentOS and Redhat Linux.
• Configures DNS, NFS, FTP, remote access, and security management.
• Creates Linux Virtual Machines using VMware Virtual Center. Installs, upgrades and manages packages via RPM and YUM package management, Firmware Upgrades, kernel patches, systems configuration, performance tuning on Unix/Linux systems.
• Installs, configures and supports Apache on Linux production servers and manages Patches configuration, version control, service pack and reviews connectivity issues regarding security problem, manages systems routine backup, scheduling jobs and enabling cron jobs.
• Designed and implemented multiple Virtualization Infrastructures on VMware Hypervisor. Built and configured Virtual Linux Machines using ESXi and VSphere Client. Experience supporting VMware infrastructure in a large enterprise environment.
• Experience configuring Linux guest in a VMware ESX environment . Administers VMware Infrastructure Client 3.5 and VSphere 4.1.
• Provide dedicated support for users for SAP applications in a HA cluster configuration (2-node,3-node) (HACMP).
• Experience working in a SAP Environment and building the servers for SAP.
• Experience with Technology level upgrades, Service pack upgrades using alternate disk method.
• Performed capacity analysis, monitored and controlled disk space usage on systems.
• Adding servers to domain and managing the groups and user in AD, installing and configuring sendmail.
• Assisting SAP Basis team with AIX/Linux and database troubleshooting.
• Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
• Installed and configured MySQL and oracle database on Linux servers.
• Expertise in Logical Volume Manager (LVM), Configured volume groups and logical volumes, extended logical volumes for file system growth needs using LVM commands.
• Initial troubleshooting and resolution of network connectivity issues. Experience in documenting processes and procedures that are followed in fulfilling a task.
• Managing various scripts to start up and shutdown databases and SAP systems.
• Active member of the Production 24/7 on-call support teams to support Databases for critical Applications.

Environment : Red Hat Linux 5/6,IBM AIX 7.1, 6.1, BMC Tools, NAGIOS, Korn Shell, Bash Scripting, Logical Volume Manager, VIO, HMC, power HA, web servers, LDAP directory, Active Directory, BEA Web logic servers, SAN Switches, Apache, Tomcat WebSphere, Web logic application server.

Confidential, Denver, CO

UNIX / AIX Admin

Responsibilities:

• Installed, maintained and upgraded Red hat Linux and Solaris Servers using kickstart based network installation.
• Installed and managed several IBM AIX systems which include disk management, user management, network management, performance management, test and development projects running on AIX 6.1.
• Configured and administered multiple production Red hat 4/5/6 servers across multiple platforms.
• Monitored the systems and administered Servers for day-to-day problems, patches, user administration, and hardware failure, monitoring log files, backup, configuration changes and documentation.
• Perl development to interact with LDAP (AD) servers to query & modify person, host & netgroup data.
• Installation, setup, configuration, security administration and maintenance for flavours of servers.
• Worked closely with SAN team and allocated storage to the server and shared with its cluster nodes.
• Most of these tasks are performed using native Korn Shell and Perl scripts system resources from one partition to another partition.
• Preparation and execution of server patching and upgrade on more than 5000 servers including HPUX, AIX, Solaris and Red Hat Linux servers.
• Configured the yum repositories for installing and updating the packages on the Red Hat Linux.
• Experienced in configuring and maintaining System Securities using IPTABLES.
• Experienced in networking with LAN, WAN, Routers, Gateways, etc.
• Working on Volume management, Disk Management, software RAID solutions using VERITAS Volume manager. File system Tuning and growing using VERITAS File System (VxFS).
• Configured, maintained, applied changes and fail-over schedules of HA servers running Veritas Cluster Server and Red hat Cluster Server.
• Implemented and maintained several client-server applications on AIX platform
• Migration of HACMP from version 5.3 to 6.1.
• Troubleshoot failed disk path and enabled back.
• Extensive working experience on LVM. Creating VG, LV and FS.
• Performed mksysb backup and restore using NIM master.
• Upgraded HMC to recommended level and firmware on the Managed Nodes using command line.
• Experienced in increasing the file system, create Mirroring, striping on AIX.
• Prepare root cause analysis for server crashed, open PMR with IBM to resolve issue.
• Responsible for performance monitoring using utilities such as vmstat, iostat and nmon.
• Deployed RHEL 5.5 and RHEL 6.1 Linux VMs using VMware vSphere client.
• Provided support and monitored the performance of UNIX/Linux/Solaris Environment.
• Installation/Upgrade of packages and check package dependencies on Linux Servers using RPM.

Environment:: 2500+ Linux instances, 900+ AIX Servers, Confidential -DL380 G6/G8 and DELL R710/720 and 920, p8/p7 Series, IBM-Blade Centre (Chassis Blades HS23, HS-22 & Racks), HMC V7R7.7.0, ILO, KVM, RHEL 7/6/5, VMware-vSphere.

Confidential, NY

Unix Administrator

Responsibilities:

• Responsible for installation, configuration, upgrade, troubleshooting and maintenance of AIX 5.3/6.1/7.1, VIOS and RHEL 5/6 on pSeries systems OS Security Patches and Additional Setup and configured TCP/IP network on LINUX and AIX.
• Installed and configured network services such NFS, NIS and DNS Server.
• Configured volume groups and logical volumes, extended logical volumes for file system growth needs using Logical Volume Manager (LVM) commands.
• Experience in Active directory configurations and support.
• Experience with setting up Linux servers for Oracle Real Application Clusters and configuring SAN based mount points.
• Worked on Symmetrix VMAX on storage provision, (Masking, Mapping) symcli commands Worked on SAN/EMC storages with HBA configuration and different levels of RAID configuration.
• Modified Korn and Bourne shell scripts in order to automate administration tasks like customizing user environment and performance monitoring.
• Setup cron jobs schedules for various backup and monitoring tasks. supported with enterprise backups using Veritas NetBackup version 4.5
• Installed, configured and administered WebSphere Application Server 4.x/5.0
• Installation/Administration of TCP/IP, NIS/NIS+, NFS, DNS, NTP, Auto mounts, Send mail and Print servers as per the client’s requirement.
• Expertise in Performance Monitoring and Performance Tuning using Top, prstat, sar, vmstat, ps, iostat etc. Creating new file system, managing & checking data consistency of the file system.
• Developed Korn and Bash shell-scripts to automate routine activities.

Environment:: Red-Hat Linux, AIX Enterprise servers ( Confidential ProLiant DL 585, BL 465/485, ML Series, SAN(Netapp), BladeLogic, Veritas Cluster Server 5.0, Shell programming, Jboss 4.2, JDK 1.5,1.6, VMware Virtual Client 3.5, VMware Infrastructure 3.5.

Confidential

Unix/AIX Administrator

Responsibilities:

• Responsible for the operation, maintenance and integrity of a distributed networked Linux/AIX environment.
• File system management - Creation, Deletion, File Systems Changes - Grow and Shrink, Disk Storage Management in AIX - Logical and Physical Volume Configuration and maintenance, Monitoring systems, CPU, memory and disk utilization using topas, sar, vmstat, netstat etc.
• Troubleshooting booting related issues, creating boot records, working with system maintenance mode, recovering root password, fixing booting related issues, working with bootlist.
• User Management - Creating, maintaining, and removing users and groups. Security settings on user accounts and groups. Working on System Management Services SMS and changing boot list order etc.,
• NFS Administration, exporting file systems, mounting exported file systems, working nfs daemons and fixing any mounting issues.
• Configuration of new devices using cfgmgr - faulty disk Replacement incase of any disaster.
• Responsible for the AIX Migration Installation from 5.2, 5.3 to AIX 6.1 both regular and NIM Alt disk migration.
• Experienced with Logical Volume Manager (LVM). Working with mirrored logical volumes.
• Experienced with upgrading the hardware and Firmware levels of the PSeries servers.
• Responsible for taking regular backups as mksysb and savevg and restoring them when needed.

Environment:: 500+ Linux, 200+ AIX Servers, DELL, Confidential ProLiant DL-380 G4/G5, pSeries ( p550, p520), RHEL(6.x,5.x), AIX 5.3/5.2/5.1, Oracle, MySQL, Tomcat.