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Sr Unix Aix Admin Resume

San Jose, CA

Sr UNIX AIX Admin

Summary:

  • An IBMCertified Specialist in UNIX/AIXAdministration with 10 + years of experience with UNIX operating systems such as IBM AIX, Sun Solaris, LINUX, HP-UX and WindowsServers.
  • Worked on various IBM p-Series servers p795, p770, p595, p590, p570, p550,p740,p795 and p520, JS21 Blade, JS20 Blade and have extensive experience in Configuration, Installation and Administration of AIX 4.3.x/5L/6.1 and Linux(Red Hat),SunSolaris Operating Environments.
  • AIX 5x and 6x installation, upgrading, migration and troubleshooting.
  • Applying patches, fixes, TL to OS and upgrading p4, p5, p6, p7 and HMC hardware firmware.
  • Experience in managing, troubleshooting P4, P5, P6and P7 series hardware.
  • Knowledge in working with Fiber Channel and SCSI Storage Area Networks (SAN).
  • Performed hardware maintenance tasks which involved expanding system resources.
  • Veritas File System (VxFS) for Disk Management, Volume Management & increased disk availability.
  • Created Disk groups and File Systems using Veritas Volume manager
  • Experience in creating standard Virtual I/O client LPAR using HMC.
  • Knowledge and hands on experience on Advanced Power5, Power6 and power7 and Vmware Esx and Esxi server for virtualization.
  • Installation and configuration of VIO 2.1, 2.2
  • Migration of VIO form 2.1 to 2.2
  • Partitioning and management Virtual I/O servers and clients
  • Expertise in creating Dual Virtual I/O servers with SEA failover, MPIO and link aggregation.
  • HMC migration from version 6x to 7x
  • Extensive experience in creating NIM environment which includes creating the NIM master and installing the operating system on NIM clients.
  • Creating and maintaining Users, Disk space, LVMs and Process Monitoring in Linux.
  • Proficient with user account maintenance, backup & recovery, Auto-mounting.
  • Experienced with Storage Administration like EMC SAN Administration.
  • Replaced H/W (Motherboard, Memory (DIMM’s), Media-Drives, NIC Cards, HBA) by coordinating with onsite team/vendor..
  • Hands on experience with NFS administration, File system management.
  • Experience in planning, implementation and Administration of HACMP systems.
  • Hands on Experience in Installation, configuration, maintenance and Administration of HACMP on AIX V5.1/5.2/5.3
  • Well versed in creating and configuring volume groups and file system suitable for use in an HACMP resource.
  • Experience in using the cluster snapshot utility to record the HACMP ODM configuration information.
  • Hands on experience in performing routing administrative changes using CSPOC in a HACMP environment.
  • Experience with NPIV.
  • Good understanding of error logging subsystem and Performance Monitoring tools like vmstat, iostat, netstat, topas, and lparstat on AIX Version 4.3/5L.
  • Extensive use of Resolved Application Startup problems, PATH problems, Name conflicts, TCP/IP and Networking Problems in AIX.
  • Planning and implementation of backup/recovery using Commvault/NIM/Sysback5.6.
  • Experience of Shell scripting
  • Provide support to SAP applications.
  • Switch/Storage Migration, storage allocation, IO performance tuning.
  • On call support for Prod/Dev/QA environments.
  • Good communication skills & well versed with group work.

Technical Skills:

Operating System : AIX 4.3/5.1/5.2/5.3 , Solaris 10/9/8 and Red Hat Linux, 6.2, 9.0, Windows NT/2000/XP/98/1995, MS Dos

Hardware : IBM RS/6000 P-Series servers (p795,p770,p595, p590, p570,p550, p520) JS21 and JS20 Blade Servers, HP, Sun Enterprise 450/420R/250 server, Sun Sparc Ultra.

Web /Application Server : IBM Web sphere, Tomcat, Apache, and Web Logic

Cluster server : HACMP Clusters

Scripting Languages : Korn shell , Born shell

Programming Languages : C, C++, Java

Network Protocols/ Services : TCP/IP Suite, UDP, HTTP/HTTPS, SSL, SMTP, LAN/WAN, TCP Wrappers, SSH, VPN

RDBMS : Oracle 8i/9i, DB2/UDB 7.2/8.0, MS Access 2000, Sybase 10.x, 11.x, SQL Server 2000

Professional Experience

Confidential, San Jose, CA
Sr Unix / AIX Admin

Responsibilities:

  • Create standard LPAR, performing DLPAR operations to manage recourses between machines.
  • Create /Installed/Configured Single Virtual I/O server with MPIO access to storage.
  • Configured Link Aggregation, Shared Ethernet and MPIO on Virtual I/O server
  • Created 80+ Virtual I/O client LPAR on different IBM p5/p6/p7 hardware using HMC.
  • Performed SAN migration on 75+ database server from DS8300 to NetApp disks storage.
  • Install golden image of AIX 5.3 , 6.1, 7.1 using Storix System Backup utility.
  • Upgrade of AIX TL and SP to latest level using NFS mount and alt disk
  • Upgrade of managed machine and devices firmware/microcode.
  • Participating in weekly change control meeting to present AIX production change.
  • Utilized skills for working on Change Request, Service Request, Problem Management and problem tickets.
  • Performed 60 hours DR exercise for Tier 1 servers environment
  • Performed administrative tasks such as System Startup/shutdown, Backup strategy, Printing, Documentation, User Management, Security, Network management.
  • Utilize HMC to create redundant virtual I/O servers and assign shared resources to p690 logical partitions (LPARs).
  • Responsible for NIM installation, setting up NIM servers, clients, define various NIM resources like lppsource, spot, mksysb, image.data, bosinst.data. Back up of HMC critical console data, LPARs profiles, system backup of virtual I/O servers and clients. Extensive experience in installing, upgrading, removing, verifying packages and APARS using installp/geninstall utility on AIX.
  • Planned/Created/Installed/Configured two Dual Virtual I/O servers with SEA failover, MPIO and link aggregation on p7 servers.
  • Performed testing to verify failover and fallback of Dual VIO server on p7 servers.
  • Analyzed and resolved hardware and software issues. Copied all users from exiting production server to new dev server. Installed and configured IBM 3580 L36 Ultrium Tape library.
  • Created user accounts and groups and performed user account management.
  • Provide 24*7 supports for (SAP, Web Sphere, ERP Lawson, Demantra, Oracle, Db2, TWS
  • Knowledge and hands on experience installing and configuring LINUX. Experience of STORIX for backup and restore OS images on IBM p5/p6/p7 servers. Planning and implementation of backup/recovery using NIM/Sysback./Storix

Confidential, Minneapolis, MN
Sr Unix/ AIX Admin

  • Installing, configuring and updating Solaris 8, 9 and AIX systems.
  • Designing System Requirements, Designing Storage requirements, Configuration Management/Change control/Release management.
  • Installing Veritas Volume Manager 4.0 and configuring Disk Groups, Volume Groups and Logical volumes to manage the storage resources.
  • Creating, Resizing and managing online JFS Filesystem for users upon user request using Veritas Volume manager and LVM.
  • Patch and Package administration to keep the servers updated with the patches and that implementing packages developed for deployment.
  • Installed and Configured SSH for secured access on HP and Solaris Systems.
  • Installing and Configuring HP-OMNIBACK 4.10 for Backup of more than 30 Servers.
  • Installing, configuring various software applications and packages like Apache 1.3.18, WebLogic 7.x, Oracle 9i etc.
  • Implementing NIS and DNS naming services and administering the public DNS servers.
  • Monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.
  • Troubleshooting and analysis of hardware and software failures for various Solaris servers ( core dump and log file analysis )
  • Tuning the Kernel parameters for the better performance of applications like Oracle, WebLogic etc.
  • Experience in Socket level TCP-IP programming
  • Creating, Deleting and managing user database and their respective directories.
  • Performing backups of Production, DIT and Development servers and applying required patches.
  • Setting up cron jobs for the user to deploy scripts on production servers. Worked in JVM, Network ,I/O
  • Troubleshooting day-to-day server related issues and problems in terms of hardware, operating system, applications and network.
  • Worked on User administration setup, maintaining account, Monitor system performance.
  • Environment, Command line, Current working directory, root directory, executed command.
  • Extensive user and group management through admin tool.
  • Strong scripting knowledge to perform different administration tasks.
  • Experience in Shell scripting (ksh, bash) to automate system administration jobs
  • Mentoring junior team members to support production web environment.

Confidential, New York, NY
Sr Unix/ AIX Admin

Responsibilities:

  • Installed and configured AIX5.2, 5.3, on P570,590,595.
  • Configured and administrated Stand alone Lpars.
  • Configured and administrated Dual VIO server and Lpar clients.
  • Administration Task’s included User administration, Performance, Sendmail. weekly mksysb
  • Daily roles included dealing with LVM extensively. Strong hold of LVM.
  • Performed upgrades from AIX 5.3 to 6.1 using alt disk migration and migration installation.
  • Migrated HACMP 5.2 to HACMP 5.4 .
  • Experience using LVM creating VGs, LVs, and disk mirroring.
  • Troubleshooting in AIX Environments 5.1, 5.2, 5.3.
  • Migration and upgrade from AIX 5.2 to AIX 5.3
  • User management, security planning and implementation.
  • Worked on Advanced POWERVirtualization on IBM p5 Systems.
  • Worked on Vmware Esx and Esxi virtualized environment.
  • Created guest and assigned N/w and Storage on Esx farm
  • Configured VIO servers and related LPARs through HMC, Dual VIO Server testing.
  • Created Micro partitioning of processor by dividing physical processor’s computing power into fractions of a processing unit and share them among multiple logical LPARs.
  • Worked with Web sphere 6.1 and maintain Web sphere Installations, modifications, performance management and configuration.
  • Installation and configuration of NIM master server and clients, creating lppsource and SPOT for client on NIM server.
  • Installing NIM clients using network boot.
  • Administration, maintenance of HACMP Clusters.
  • Installation, Configuration & Upgrade of AIX operating systems running oracle Database.
  • Performing Failovers in HACMP / cluster environment, monitoring servers
  • Configuration and Administration of DNS, NIS, NIS+, NFS, DHCP, FTP, Samba Servers and clients. Security layers like SSL, SSH, HTTPS, SFTP.
  • Configuration and administration of mail server, Send mail, and SNMP/POP
  • Writing Shell scripts for automation of job, system monitoring and error reporting.
  • Configuration of Hardware and Software RAID. Disk replacement and File system recovery.
  • Worked on EMC disk storage to allocate disk space, configuring LUNS on server side.
  • Backup maintenance through TSM using Tape libraries.
  • Experience in installing and managing IBM RS/6000/Pseries with DB2 and Oracle
  • Worked on Unix/Linux Email gateway server with Qmail & Sendmail.
  • System analyst & design, development and testing in LINUX environment.
  • Installation & Administration of Redhat Linux server and Workstation.
  • Troubleshooting and patching different defects for all AIX levels using the Fileset Program Temporary Fix (PTF) and APAR's.
  • Document backup policies and procedures for backup routines, schedules and restore policies.
  • Setup, configure, backup and restore NIM database and create various NIM objects and resources such as lppsource, spot, bosinst.data, image data.

Confidential, Durham NC
Senior AIX Administrator

Responsibilities:

  • Managing users like creating, deleting and granting proper privileges and managing system security.
  • Resolving user issues, problems and providing the system accessibility in 24 x 7environment.
  • Built S85 RS/6000, created logical volumes, physical volumes, file systems using LVM, gave user privileges and monitored system performance.
  • Created Logical Partitions of VIO Servers and VIO Clients on p-Series frame and assigning processor, memory and Ethernet adapters to VIOS and assigning memory and processor to VIOC (LPARS).
  • Installation and configuration of VIOS 1.5.2.5, VIOS Fix pack 11.1 Service Pack via NIM Server.
  • Installation of AIX 5.3,6.1 on all VIOC/LPAR Clients, installation via NIM Sever
  • Configured Ether Channel by Link aggregation of two physical NIC’s
  • Creating SEA “Shared Ethernet Adapter” to bridge between Ether channel and Virtual Ethernet Adapters
  • Setup of VIO Clients/LPARS sharing Ethernet Adapters and SCSI’s
  • Expert hands on experience with HMC-7 to make VIOS and VIOC partitions
  • Revised security policies to improve existing security.
  • Worked on solving various troubleshooting procedures on SP2 systems, maintenance of system logs for backup & restoration.
  • Configured and maintained HACMP on p4, p5 and p6 systems.
  • Responsible for testing a mutual takeover configuration in a HACMP environment.
  • Configured event notification to monitor devices beyond control of HACMP.
  • Installed EMC Power Path and involved in Storage Area Network (SAN) administration
  • AIX 5.x, and 6.x MPIO support for multi-path Fiber Channel storage subsystems, as well as AIX servers configured with multiple Fiber Channel (FC) Host Bus Adapters (HBA) on a Storage Area Network (SAN).
  • Backup and recovery strategies using mksysb for cloningrootvg,
  • Edited HACMP event scripts to setup custom events during primary and secondary events.
  • Frequent checks on the status of the HACMPcluster and monitored the error log files of the HACMP.
  • Backup and restore data using tar, cpio, pax, mkcd, gzip and gunzip for data and data structure.
  • Developed scripts for backup and setup scripts in cron for automated execution of jobs at specific time intervals and writing scripts for disaster recovery for different types of outages to minimize the down time.
  • Used PTFs and APRs to fix different systems software problems.
  • Updated microcode by creating Microcode Update Files & Discovery Tool CD.
  • Administration of patches involving installing operating environment patches from running Unix (AIX) environment.
  • Added new services to the system at boot time by editing run control scripts and configuring kernel parameters for better system performance.
  • Tuned the kernel for improving performance on existing P, series systems by studying outputs.
  • Scheduling the processes running on the system, scheduling the automatic execution of commands using cron and at commands and controlling crontab access by editing system files.
  • Extensively involved in writing shell scripts and Perl Scripts for system maintenance and monitoring tasks.
  • Installed and maintained IVR for trouble tickets logged in by users and customers. Managing & troubleshooting the problem with multiple file servers, domain controllers, user remotes access systems (NIS, NFS, and DNS Servers). ‘

Confidential, Cincinnati, OH
Aix Admin

Responsibilities

  • Responsible for configuration of AIX servers, for maximum performance in a production environment, including kernel tuning and compiling, configuring systems with various raid, strip and mirroring configurations.
  • Performing System Storage management/LVM tasks like creating volume groups, PV’s, LV’s and jfs/jfs2 File systems, mirroring, VG’s, LV’s and mounting File systems.
  • Administering and troubleshooting of AIX HACMP Cluster.
  • Managing the user environment by adding, modifying and removing user accounts from the environment and limiting access to appropriate nodes.
  • Test and install various patches (Fix Packs) on the servers to solve the problems encountered by the applications running on the servers.
  • Migrate application and other software modifications from the development environment to production.
  • Used NIM to install AIX and do OS upgrades.
  • Fixed corrupted filesystem via maintenance mode using spot from NIM
  • Used mksysb over NIM to restore server OS
  • Worked alongside IBM for hardware and software issues
  • Resolved tickets using Remedy ticketing tool
  • Installed NIM server and NIM clients
  • Develop Shell scripts (Korn) for automating the batch jobs.
  • Specifying and procuring new AIX systems, hardware and software upgrades and peripherals.
  • Optimize administration and distribution of space in disk for the Oracle database.
  • Maintaining the hardware environment by adding new components as required and preparing the environment for additional equipment (power, networking).

Confidential
AIX Administrator

Responsibilities:

  • Managing users like creating, deleting and granting proper privileges and managing system security.
  • Resolving user issues, problems and providing the system accessibility in 24 x 7environment.
  • Built S85 RS/6000, created logical volumes, physical volumes, file systems using LVM, gave user privileges and monitored system performance.
  • Created Logical Partitions of VIO Servers and VIO Clients on p-Series frame and assigning processor, memory and Ethernet adapters to VIOS and assigning memory and processor to VIOC (LPARS).
  • Installation of AIX 5.3,6.1 on all VIOC/LPAR Clients, installation via NIM Sever
  • Configured Ether Channel by Link aggregation of two physical NIC’s
  • Setup of VIO Clients/LPARS sharing Ethernet Adapters and SCSI’s
  • Expert hands on experience with HMC-7 to make VIOS and VIOC partitions
  • Worked on solving various troubleshooting procedures on AIX systems, maintenance of system logs for backup & restoration.
  • Configured and maintained HACMP on p4, p5 and p6 systems.
  • Responsible for testing a mutual takeover configuration in a HACMP environment.
  • Configured event notification to monitor devices beyond control of HACMP.
  • Involved in Storage Area Network (SAN) administration.
  • Backup and recovery strategies using mksysb for cloning rootvg.
  • Disk Storage Management in AIX – Logical and Physical Volume management, configuring disks, working with volume groups, logical volumes, and physical volumes.
  • Capable of handling RAID issues including built of a RAID ARRAY. Adding and Removing of the disks to the RAID5 array.
  • Frequent checks on the status of the HACMP cluster and monitored the error log files of the HACMP.
  • Used PTFs and APRs to fix different systems software problems.
  • Updated microcode by creating Microcode Update Files & Discovery Tool CD.

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