Certifications :    IBM Certified System Administrator - AIX 6.1

 

AIX ADMINISTRATOR

 

·   7+ IBM Professional AIX System Administrator with more than 7 years of experience in Administration, Engineering and Development of Information Systems.

·   7 years of experience AIX administration in HMC V7R7 and HACMP 5.3 environment.

·   5 years of Shell Scripting experience.

·   2 years’ experience as a UNIX systems administrator managing servers in as
enterprise environment consisting of 500 or more servers

·   Extensive experience in installing, configuring, maintaining, design, development, implementation, and support on IBM AIX 5.x /6.1/7.X (p505,p570 , p720, p770 and p795) and Windows Operating

           Environments.

·   Experienced in IBM RS/6000 System Software Maintenance.

·   Experience in Shell scripting (ksh, bash) to automate system administration jobs.

·   Administered shell interfaces, groups/user accounts, login scripts, X-Windows and kernel patches & updates.

·   Proficient in archiving and backups. Using tar, pax, scp restore and backup commands, mksysb for root volume group backup and savevg for user created volume groups backup.

·   Extensive Experience in AIX System Dump Generation, Taking snap short, Running perfpmr and sending the results to AIX System Support Center.

·   Experienced in LPAR, DLPAR and creating new partitions. Assigning resources between LPAR, Restoring MKsysb, creating fresh builds and Wpars.

·   Extensive use of Resolved Application Startup problems, PATH problems, Name conflicts, TCP/IP and Networking Problems in AIX .

·   Experience working with Enterprise class SAN storage arrays, FC HBA connectivity, etc.

·   Expertise in Planning, Installation, Configuration and Maintenance of IBM HMC V7R7. on AIX 5.3/6.1.

·   Experience in Migration of HACMP 4.5 to HACMP 5.2, 6.1 using Node-by-Node migration without changing the cluster setup and Performed live partition mobility (LPM)

·   Knowledge of networking (TCP/IP, Ethernet), NIS, DNS, NFS, DHCP, SMTP, RAID, VSCSI and NPIV.

·   Provided support and done paching for aix upgrades and Tripwire.

·   Expertise in creating new builds ,SAN and Non SAN boot system.

·   Created profiles using Virtualization of Dual vio’s.

·   Experience in Migration (San ,Switch and EMC ( Vplex powerpath))

·   Also have experience in SRDF , Vplex (Type 1-Disks are not directly zoned, Type 2-disks are directly zoned and Type 3-Host based mirroring with powerpath) and TSM Migration as well. Performed Zoning on Switches ,Assigned disks on storage side on DS8000.

·   Hardware troubleshooting, Maintenance and Replacement of failed hardware and configuration of new hardware. Replaced failed hard drives, memory dimm’s, back planes, CPU components, Fiber Channel Adapters (HBA’s), NIC cards and other hardware

 

 

Operating Systems:              IBM AIX 4.3, 5L, 5.1, 5.2, 5, 3, 6.1 Linux (Redhat, SUSE), Windows 2000/03/NT4.0, Wintel, and HP-UX

Hardware:     IBM RS/6000, pSeries 520, 550, 570, 590, 595, HP V2500, L2000, RP8400, N4000

Web/Application Servers: WebSphere Application Server 4.0/5.1/6.1/7.0, Netscape/iPlanet Server, MQSeries, WebLogic Server, IBM HTTP Server, HTML, DHTML, XML, Apache 2.2,Tomcat 5.5,Active MQ

Networking:TCP/IP, RPC, UDP, NIS, NFS, DNS, DHCP, Cisco Routers/Switches, LAN/VLAN, IVE and VLAN tagging

RDBMS:IBM UDB2, Oracle 7.x/8.0/9i/10g/11g, MS-SQL Server 2005/2008 and MS-Access 2003/2007

Programming Languages: Java, C, C++, ASP.Net, C#.Net and VB.Net, HTML, Perl and Shell programming

Applications:HACMP, PowerHA, Samba, Tivoli (TSM), Symantec NetBackup, Serviceguard and CommVault Simpana

 

 

Citigroup, Tampa, FL  Jan ‘12 – Present

 

Responsibilities:

 

·   Responsible Experience in Designing, Building, installation, configuration, tuning, security, backup, recovery and upgrades of IBM AIX

·   Worked on Building LPARs and Clusters, Creating Engineering and Installation Documentation.

·   Worked on migration of OS from AIX 5.3 to 6.1 and  AIX 6.1 to 7.1

·   Supported both medium (p550/570/740/) and large (p595/p770/ p795) PSeries systems. Power 5, and Power6 Virtualized platforms.

·   Installed/Configured VIO Servers and migrated VIO2.1 – 2.2.

·   Used the DLPAR options of HMC for the performance tuning to allocate and reallocate the CPU (Micro Partitioning) on the LPARs under different VIO Servers.

·   Performed performance tuning using DLPAR options of HMC to allocate reallocates and installed memory on the LPARs Under different VIO’s Servers.  

·   Configured new HMCs, Managing and upgrading the existing HMCs through GUI and command line.

·   Upgraded system firmware to newest release levels in P6 and P7 servers.

·   Managed and used NIM servers to push the OS images.

·   Managed Power HA (HACMP) cluster for the current Non-Prod/production environment.

·   Verified and synchronized the Power HA (HACMP), configured Power HA to monitor, detect and react to failure events, making systems available during random and unexpected events.

·   Configuration and administration of Power HA (HACMP) cluster resources and concurrent    resource groups, event handler testing using clstat, clverify.

·   Provided support for AIX environment running different applications/modules.

·   Responsible for AIX performance and tuning.

·   Experience in building a VIO server, configure VIO clients, SEA and SEA failovers.

·   Expertise in Installing of AIX MPIO, EMC power path and updating licenses.

·   Setup password less access between the servers using by using ssh-keys for application user accounts.

·   Installed and backed up the servers using Tivoli Storage Manager(TSM)

·   Ensured the Systems and Data online, offline, archived Backups on Daily and weekly basis for Oracle database.

·   Worked in designing and creating and documentation a DR for business critical production servers.

·   Implemented shell script in cron to automate the process of Shutting down the Database servers and perform the system backups.

·   Experience with BMC Remedy ticketing tool and Chameleon product in keeping track of records of all business critical servers.

·   Provided 24X7 on-call production support.

·   Installed ,configured and maintained Apache, Jakarta-Tomcat and BEA Weblogic software in a multi-vendor UNIX environment, Software versions included Apache 1.3.x-2.0.x, Tomcat 5.x-6.x, Weblogic server 9.0 and 10.0

·   TCP/IP Configuration like assigning IP addresses, configuring network interfaces and aliases, assigning static routes, hostnames etc.

·   Checking and investigating all system logs and providing a solution to the application team

·   Worked on monitoring system performance and checking system status using utilities such as TOPAS, GLANCE, NMON, VMSTAT, IOSTAT, etc.

·   Worked on configuring network on adapters using smitty, mktcpip and smitty chinet

·   Worked with different teams such as Network Engineering, Storage Area Networks (SAN), Database and application teams to resolve various hardware and software related issues

 

Environment : TSM, Oracle ,Hardware: IBM p550, p570, p595, p740, p770, p795, O/S: IBM AIX 5.1, 5.2, 5.3 & 6.1, 7.1. Storage: EMC Symmetrix

 

 

Home Depot, Atlanta, GA                                                         Sep ‘09 – Dec’ 11

 

Responsibilities:

·   Worked on System Administration of AIX UNIX on p 550, p 570, P770 on AIX 6.1 & 5.3.

·   Responsible for OS migration on all production servers from AIX 5.3 to 6.1 and TL upgrades.

·   Responsible for NIM installation on LPAR’s, setting up NIM Servers, Clients, Define the resources, Migrations with NIM.

·   Software installation, updates and troubleshooting on systems using NIM and media.

·   Configured and administrated VIO servers and VIO clients along with NPIV mapping.

·   VIO server planning and setup with Micro Partitions.

·   Built and configured new Power HA (HACMP) and supporting existing clusters.

·   Upgraded the HACMP clusters from 5.4 to 5.5.

·   Moved LPARs from one physical host to another physical host.

·   Upgraded Firmware (concurrent/disruptive) for P570, P770s.

·   Upgraded HMCs Good from one release level to another level.

·   Installed AIX MPIO, EMC power path and updating licenses.

·   Configured EMC Clarion Products on AIX Environment.

·   Migrated servers form the IBM storage to EMC storage.

·   Did installation and configuration of (Tivoli Storage Manager) TSM Clients and taking non rootvg backups on TSM.

·   Installed DB2 clients and Web sphere application software.

·   Created and maintained volume groups, logical volumes and file systems.

·   Created and managed paging space and system dump devices.

·   Took care of User Management tasks like Creating, maintaining, and removing users and groups. Security settings on user accounts and groups.

·   Managed CRON jobs (Scheduling jobs). Batch processing and job scheduling to automate various System admin tasks using the crontab utility.

·   Installed tools like Big Fix, Tivoli Monitoring, SNMP and TPC.

·   Provided 24X7 supports on pager rotation basis remotely for all the stores.

·   Knowledge on HP ProLiant Blade servers - BL 685c.

·   Maintaining and creating Scripts Using Shell for automating Various System Processes

·   Performance Management & Tuning of AIX /UNIX Kernel. 

·   Security, Disaster Recovery, users and groups administration.

·   Networking service, performance, and resource monitoring.

·   Familiar with IBM Enterprise Storage Server (ESS).

·   Updated documentation of all the Servers and the installed applications and patches.

 

Environment: DB2 ,Big Fix,Websphere, SNMP, TPC, Tivoli Monitoring, Hardware: IBM RS/6000 – p550, p570, p595, p670, LINUX O/S: IBM AIX 5.2, 5.3 & 6.1, Storage: EMC.

 

Tesoro Companies, San Antonio, TX                      Feb‘08 – Aug’09

 

Responsibilities:

·   Provided system support for AIX servers in a diverse environment.

·   Installed device drivers for all operating systems and hardware.

·   Performed technical account management and project planning of new server builds through NIM.

·   Created and maintained volume groups, logical volumes and file systems.

·   Experience in user management like Creating, maintaining, and removing users and groups. Security settings on user accounts and groups.

·   Expert in Installing, configuring and maintaining SNMP, IP, apache/tomcat, samba & send mail, Web Sphere Application Servers.

·   Deployed the applications on severs.

·   Configured, tested and debugged the applications.

·   Knowledge of TCP/IP, HTTP/HTTPS/SSL, CISCO routers and switches.

·   Integrated UNIX file systems using packages like SAMBA. Setting up printers on UNIX / NT machines to work seamlessly across platforms.

·   Performed System Storage management/LVM tasks like creating volume groups, , mirroring, VG’s, LV’s and mounting file systems.

·   Tested and installed PV’s, LV’s and jfs/jfs2 File systems various Fix Packs on the servers to solve the problems encountered by the applications running on the servers.

·   Supported different databases like DB2, Oracle on AIX.

·   Worked with SAN team to resolve SAN Storage connectivity and troubleshooting.

·   Worked on HMC, administering, configuration of LPAR, DLPAR nodes, resource allocation, moving resources as when required dynamically.

·   Created and configured LPARS in HMC, using NIM to install and manage LPAR. Good understanding in Virtualization on IBM P5 systems.

·   Monitored the TSM Schedules using Integrated Solution Console (ISC), If any backup filed then updating the schedule manually.

·   Performance monitoring using vmstat, TOPAS, etc

·   Assisted Oracle DBA's with installs on AIX servers.

·   Provided input on strategies for upgrading AIX through all maintenance levels.

·   Managed problem resolution, problem escalation and provide training and technical support to all levels of customer service engineers.

 

Environment: TSM, DB2, Oracle ,Hardware: IBM RS/6000 – p550, p570, p640, O/S: IBM AIX 5.x/4.x, Storage: EMC, symmetrix.

 

Chartlinks, New Haven, CT               Jan’07 – Jan’08

 

 

Responsibilities:

·   Installation/ Troubleshooting of 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.

·   Ensure the integrity for all systems are maintained, system version is kept current and at       appropriate maintenance levels.

·   Ensure all AIX systems maintain correct configurations.

·   Monitor the performance of installed technologies, performing required maintenance and upgrades as appropriate

·   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.

·   Applied software maintenance, program fixes and keeping the system software release

·   Utilize HMC to create redundant virtual I/O servers and assign shared resources to p570 logical partitions (LPARs).

·   Security, users, groups administration and daily backup and restore operations, networking service, performance, and resource monitoring.

·   Extensive experience in installing, upgrading, removing, verifying packages and APARS using installp/geninstall utility on AIX.

·   Configured Single and Dual Virtual I/O server with MPIO and Mapped virtual SCSI and Ethernet for LPAR client.

 

Environment: IBM AIX v5.1, v5.2, v5.3, p6-570 and p5-570, LPAR, DLPAR, Dual Virtual I/O, HMC, NIM, NPIV, TSM, SAP, Oracle.