SUMMARY

• A System Administrator with almost 7 years of experience specialized in Network Administration and Application Support on Redhat - Linux, SUSE Linux, IBM-AIX and Windows environments.
• Providing 24X7 On-call Production and Customer Support including trouble shooting problems related to Linux servers and IBM AIX pSeries servers.
• Planning, Installation, Configuration, Maintenance and Administration of AIX 4.3/5.1/5.2/5.3/6.1/7.1 and Linux (Redhat 4, 5 & SuSE) and day to day system admin tasks.
• Setting up printers / remote queues / Info-print management Migration upgrades of AIX (433/51/52/53), including system tuning, security, backup, recovery and upgrades of IBM AIX and Linux.
• Configured Volume groups, logical volumes and file systems on Linux
• Installation of patches, Security fixes, packages on AIX, Linux and Windows NT/2000 Servers
• Extended knowledge in installing AIX in an LPAR environment pSeries including configuring VIOS
• Maintain and use NIM Master for installs and upgrades. Plan and implement service updates
• Expertise in scripting for automation, and monitoring using Shell, Python & Perl scripts
• Expertise in Planning, Installation, Configuration of IBM HACMP v 5.1, 5.2, 5.3. Including problem-solving and disaster recovery in detecting and reacting to failure events, allowing the system to stay available during random, unexpected software problems and also configured to react to hundreds of system events. Experience includes TCP/IP Networking Parallel System Sport Programs (PSSP) which supports best practices in HACMP - High Availability Clusters
• Configuration and administration of Fiber card Adapter’s and handling Linux part of SAN (SAN arrays HITACHI, EMC).
• Experience in Migration of HACMP 4.3.1/4.5 to HACMP 5.1 using Node-by-Node migration without changing the cluster setup.
• Used Hardware Management Console (HMC version 7) to build and partition the P5 and P5+ servers.
• Extensive hands-on background in AIX Logical Volume Manager (LVM), OS Upgrades and Servers Disk Crash Recovery mksysb (AIX)
• Linux-based Virtualization implementations with VMWare.
• Experience with enterprise class storage including SCSI, RAID and Fiber-Channel technologies Installation, Configuration and Administration of HP Data Protector & Veritas NetBackup.
• Performed User Administration and Hardware setup and support of Storage and managed paging space.
• Experienced in Monitoring system Access and Monitoring servers by using tools like Tivoli, and Concord.
• Installed Web Sphere Application Servers on Linux and AIX.
• Experience in IBM WebSphere Administration and setting up IBM WebSphere Application Servers in the development, testing and production environments.
• Experienced in implementing the workload Management (WLM) using cloning and clustering
• Conducted AIX / Linux System security and auditing and did Performance Monitoring and Tuning
• Possess strong trouble-shooting attitude and business oriented user interface
• Excellent client relation skills and the drive to complete tasks effectively and efficiently where customer services and technical skills are demanded as well as the ability to communicate effectively with all levels of management and the client community.

TECHNICAL SKILLS

Operating Systems: Linux (RedHat 3.x,4.x,5.x, SUSE 8), IBM AIX 5L(5.1,5.2,5.3),6.1,7.1, Windows 2000/NT4.0,windows 95/98/ME/XP, VMware ESX 2.x,3

Hardware: IBM RS/6000, pSeries 520, 550, 570, 575, 590, 595, 650, 630,670, M80, S80, H70 and H80, z/VM-9 series, IBM ESS (Enterprise Storage Server), DS8000, IBM 3494, 3583 Automated Tape Library, Brocade, SUN Enterprise 450, SunFire 4500,V880, V480,E420R,E450,E250, HP DL 380s and 580s,EMC Symmetrix, Hitachi arrays, Backup Devices, Ethernet Hubs, Routers, Repeaters, Jukebox, Printers DELL Poweredge 1650, 2850, 2950, 6400

Web/Application Servers: Websphere Application Server (WAS)3.5,4.0, Netscape/iPlanet Server, MQSeries, WebLogic, JBoss, Server, IBM HTTP Server, HTML, DHTML, XML, Java Script, JSP, Servlets, EJB

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

RDBMS: IBM UDB2, Oracle 7.x/8.0/9i, MS-SQL Server 7.0/6.5 and MS-Access 97/95

Programming Languages: C, C++, Java, Servlets, Jsp, EJB,VB, JavaScript, HTML, Perl,Python and Shell programming

Applications: HACMP, Samba, Tivoli (TSM), Veritas, NetBackup, Veritas Volume Manager, LVM

PROFESSIONAL EXPERIENCE

Confidential, Memphis, TN

Unix/ AIX Administrator

Responsibilities:

• Administered, maintained Red Hat 4.0, 5.0 AS, ES, troubleshooting hardware, operating system, applications & network problems and performance issues
• Deployed latest patches for, Linux and Application servers, performed Red Hat Linux Kernel Tuning
• Install and configure DHCP, DNS (BIND, MS), web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Linux servers
• Migrated database applications from Windows 2000 Server to Linux server
• Implementation of Samba to help printing and file sharing in the mixed Environment
• Installing and setting up Oracle9i on Linux for the development team
• Installed Web Logic 9i with SP5 Server and configured Domains, Admin and managed servers for Applications to be deployed.
• Provided production support of Apache and JBoss including installation, configuration, management and troubleshooting.
• Implemented virtualization using VMware in Linux on HP-DL585 and IBM-z/VM series.
• Linux kernel, memory upgrades and swaps area and performed Red hat Linux Kickstart installations
• Hardware Maintenance and System Administration of existing RS 6000 running AIX (40 systems in Network)
• Implemented day-to-day tasks in RedHat Linux that include upgrading rpms, kernel, HBA driver, configuring SAN Disks, multipathing and LVM file system
• Created users, manage user permissions, maintain User & File System quota on Redhat Linux and AIX.
• Installed, configured and administered AIX 4.3.3, 5.1,6.1 & HACMP 4.4.
• Upgraded AIX 4.3x to AIX 5L v5.1, 5.2, 5.3
• Performed successful installations, configuration and maintenance of Highly Available Cluster Multi Processing (HACMP)
• Experience in Migration of HACMP 4.3.1,4.5 to HACMP 5.1 using Node-by-Node migration without changing the cluster setup
• Worked on Webservers; JBoss, Tomcat 5.x/4.x/3.x & Apache Server 2.x/1.x
• Apache/Tomcat server, mail server, MySQL database, and firewalls in both development and production
• Developed Korn and Bash shell-scripts to automate routine activities
• Configured and administrated Lpar’s/DLpars’s.
• Data Warehousing and System Backup using tar, cpio for local systems and Veritas Netbackup for enterprise wide backup and recovery
• Manage systems using remote consoles like ILO for HP Hardware and HMC for IBM P-Series
• Setup network printers and installed client/server applications. Defined/setup network protocols, Network File Services (NFS), and Network Information Services (NIS) in Linux and AIX systems
• Network trouble shooting using ‘ndd’, 'traceroute', 'netstat', 'ifconfig' and 'snoop' etc
• Provided support by 24x7 shift rotation basis and pager support
• Monitored trouble ticket queue to attend user and system calls, attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment
• Updated data in inventory management package for Software and Hardware products.
• Capacity Planning, Infrastructure design and ordering systems.
• Worked with DBAs on installation of RDBMS database, restoration and log generation.

Environment: Red Hat Linux 4.0,5.0 AS ES, AIX 4.3,5.1,5.2,5.3, HP-DL585, HACMP 4.2.x,4.3,4.3.1,4.4, Veritas Netbackup, SAN Storage, 4.5.5, IBM-z/VM, Oracle 9i/10g, Samba, NT/2000 Server, Websphere, Web Logic 8.1, VMware ESX 2.x, LPAR, DLPAR, Tomcat 3.x,4.x,5.x, Apache Server 1.x,2.x, Korn, Bash.

Confidential, Dayton, OH

AIX Administrator

Responsibilities:

• Performance Tuning and Maintenance activities on Database Production systems
• Problems and performance issues; deployed latest patches for Linux Application servers, Performed Red Hat Linux Kernel Tuning for TCP stack. Installation Red hat Linux 8, 9.0 on Dell, Proliant, and Enterprise Server 4.0
• OS Migration fromAIX5.2 toAIX6.1using server and Storix back utility.
• Responsible for successful migration of servers to different location
• Configured File Systems, users and group for Oracle and Websphere
• Configuration and administration of Fiber card Adapter’s and handling of SAN (SAN arrays, HITACHI, EMC)
• Configuration of Kernel parameters for Oracle Database.
• Ensured connectivity to Servers and Network Administration
• Configured IBM-z/VM 5.1 for test environments, used VMWare ESX Server to build guest OS using cloning
• Installed and setup CUPS, LPD, configured local and remote printers
• Created Korn shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation
• Solved installation errors for Debian 3.1 Sarge version kernel 2.6.22 in Supermicro servers for Apache2 web server/ruby/python
• Installation, Configuration and Administration of High Availability Veritas Cluster Servers for failover and redundancy purpose
• Implemented the workload Management (WLM) and Load Balancing
• Created shell scripts to take backup Oracle database
• Hardening and securing of all the Sun servers
• Configured JBoss Application servers over Apache web server in Linux based systems.
• Automating the installs using Kickstart and building post install scripts using Shell scripting
• Configured Network services such as NFS, NIS
• Monitored server and application performance & tuning via various stat commands (top, mpstat, prstat, nfsstat, prtconf, prtdiag, iostat, top, printmgr, hpimliview, dmidecode, smc etc) and tuned I/O, memory etc)
• Backup configuration using Veritas Netbackup
• Monitor the systems using Tivoli
• Applying new patches and packages on Linux
• Used smitty (AIX) tool for Printers, Applications, Processes, Services, Software License Management, Software Installation, Users and Security Management

Environment: Redhat Enterprise Linux 3.0/4.0, AIX 4.3.2, Sun Fire V240, Sun Fire 480, Sun E15K, IBM RS/6000, Veritas Volume Manager, Solstice Disk Suite, Tivoli, WebSphere, Veritas Netbackup, Samba, Oracle 9i.

Confidential, Ft. Lauderdale, FL

Unix/Linux/ AIX Admin

Responsibilities:

• Worked as a System Administrator for AIX, UNIX, and Linux servers
• Configured IBM p5,B80,RS6000,520,550,570,590,595,610,690.695, z/VM 5.4 for production, staging and test environments
• Install and configure DHCP, web (Apache, IIS), mail (SMTP, IMAP, POP3), and file servers on AIX and Linux servers
• Created and managed user accounts, security, Access Control Limits (ACL), permissions, disk space and process monitoring in Redhat Linux and IBM AIX
• Monitored Disk & Memory Utilization on AIX 5.1, 5.2
• Upgraded IBM-z/VM 5.4 servers to new technology levels, configured LVMs on AIX 5.1, 5.2
• Experience using LVM creating VGs, LVs, and disk mirroring.
• Installing and setting up Oracle9i and Websphere on Linux for the development team.
• Implemented Virtualization using VMWare in Linux on HP-DL585.
• Linux kernel, memory upgrades and swaps area. Red hat Linux Kickstart Installation.
• Hands on experience of HMC & LPAR.
• System performance monitoring and troubleshooting in AIX Environments 5.1, 5.2
• Provided logical design and architecture for the enterprise storage network
• Creating users, managing user permission, maintaining User & File system quota in Redhat Linux and AIX.
• User management, security planning and implementation, Backup and restore Management.
• Configured VIO servers and related LPARs through HMC, 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
• Clustered multiple RS/6000 machines on AIX 5.1/5.2 using HACMP 4.5.
• Installation, Configuration & Upgrade of AIX operating systems running oracle Database.
• Worked with Database administrators to tune kernel for Oracle installations on Linux.
• Clustered multiple RS/6000 machines on AIX 5.1/5.2 using HACMP, configured HACMP cluster to keep applications running.
• Configured cascading, mutual takeover and rotating modes of operation of the HACMP and HACMP/ES products.
• Performing Failovers in HACMP / cluster environment, monitoring servers
• Configuration and Administration of DNS, NIS, NIS+, NFS, Automount, DHCP, FTP, LDAP, Samba Sendmail, Servers and clients. Security layers like SSL, SSH, HTTPS, SFTP
• Installation and configuration and maintenance of Netscape and Apache web server
• Writing Shell scripts for automation of job, system monitoring and error reporting
• Identified protocols to be automated and developed the automation scripts in Perl, Shell, Python, PHP, bash, Awk C and C++.
• Configuration of Hardware and Software RAID, disk replacement and File system recovery
• Worked on EMC disk storage to allocate disk space
• Backup maintenance through TSM using Tape libraries, planned and setup Disaster Recovery Servers
• Drafted shell scripts for automated installations, to extract logs
• Documented backup policies and procedures for backup routines, schedules and restore policies
• Mentored and trained other individuals on the team

Environment: IBM zSeries, z/VM5.1, AIX 5.2 Servers in IBM P570, 550, 570, 590, 595, 610, 690, 695, HACMP 5.3, Suse Linux, IBM DS4300 Storage System, ESS Shark with SAN environment, IBM TSM Tivoli Storage Manager 5.3.4, IBM Tape Library 3584 with LTO 3580 tape drives, TSMW2K Monitoring and Administration Linux 8.0, Linux Enterprise Server, IBM Communication server, Symantec Ghost, Websphere, Oracle.

Confidential, Hopkinton, MA

Sr.Linux /AIX Administrator

Responsibilities:

• Provided 24x7 System Administration support for AIX 5.2/ 5.1 based servers and Redhat Linux 4.x, 5.x servers and resolved trouble tickets on shift rotation basis for IBM’s Clients/ Customers
• Performed installation, configuration and maintenance of AIX 5.2/5.1 based p550/ p570/ p650/ p69, IBM Squadron servers and Linux (Redhat and SuSE) servers
• Performed troubleshooting, tuning, security AUDIT, backup, recovery and upgrades of IBM AIX 5.2/5.1/4.3, HACMP 5.1/4.5 and Linux (Red Hat) 4.0/3.0 based systems
• Maintaining Suse Enterprises Linux 8, and Redhat Linux AS 5 servers in development, test and Production environment and proactively monitoring and administering production and development servers
• Managed HP and DELL servers running on Redhat Linux and SuSe Linux (SLES 7 and 8)
• Installed, configured and maintained VIO server on IBM AIX 5.2 based p-Series 570/ p550 servers
• Worked extensively on planning and configuration of LPARS/ D-LPAR’s on IBM p-series 570/ p550 servers
• Conducted planning, implementation and management of NIM Master server & NIM clients
• Wrote bash shell scripts for getting information about various Linux servers
• Maintaining CPU, Memory resources on Micropartition VIO Server’s and Client’s environments
• Planned, installed, configured and maintained HACMP 5.3 clusters on IBM Squadron/RS/6000 p-series servers
• Wrote shell scripts to automate the administrative tasks and management using cron, at, and batch
• Responsible for system backups using mksysb, mkcd, savevg. Also performed system backups through NIM and created archives of various software
• Creation of LVMs on SAN using Linux utilities
• Monitored overall system performance, performed user management, system updates and disk & storage management
• Installed, configured and monitored server by BMC Patrol, NMON & PTX
• Performed troubleshooting of CPU bottle necks, memory bottle necks and gave suggestions on performance improvements. Analyzed performance issues through PERFPMR
• Tuned scheduler algorithms using schedtune to fine tune priority formulas
• Wrote Technical documentation for various projects and worked with Technical writer to finalize the documents

Environment: AIX 5.2/ 5.1, Redhat Linux 4.x, 5.x, p550/ p570/ p650/ p69, IBM squadron, HACMP 5.1/4.5, Linux (Red Hat) 4.0/3.0, SLES 7, 8, VIO server, LPARS/ D-LPAR’s, NIM Master server & NIM clients, BMC Patrol, NMON & PTX

Confidential, New York City, NY

Sr.Linux System Administrator

Responsibilities:

• Design, implement, and administer HACMP solutions for business critical applications based on AIX, including multiple UDB Database systems.
• Design, implement, and maintain AIX solutions for Tier I applications, including multiple udb database servers
• Involvement in all major projects to recommend, design, and implement backup solution Involvement in all major projects to recommend, design, and implement storage solution
• Design, implement, and administer a Tivoli Storage Manager solution for enterprise backup & recovery
• Maintain enterprise backup environment by monitoring Tivoli system for sizing considerations through usage trending
• Design and test a Disaster Recovery solution for all business critical applications and systems, including AIX, Linux and Solaris systems.
• Design and implement a DNS/DHCP solution to replace current aging system. Solution required 99.9% uptime via Linux clustering.
• Size AIX systems that would support Oracle databases, as well as tune systems for performance issues through disk and network topology, as well as system environment tuning
• Supported Solaris systems running interface and transaction engine. Also assisted with migration of eGate Interface engine from Solaris to Linux.

Environment: IBM RS/6000, Red Hat 7.2, AIX 4.3.3, TSM, Sun Solaris, Oracle v8

Confidential

Sr.Unix administrator

Responsibilities:

• Responsible for the Database / Network operation with 8 server and 120 Desktops
• Setup Squid Proxy Server for internet sharing and to block the unwanted sites
• Maintained Samba File Server for user authentication, synlog domain, and file sharing
• Setup VOIP 8 port Audio Code for outsource business consultant
• Installed and configured Citrix Metaframe XP Presentation Server, Terminal Server to published ITMS application for demo and also used WebEx
• Setup Clustering for Linux servers
• Setup VPN for external team
• Used lilo and fsck to resolved server issues using rescue mode, and single user mode
• Assisted the development team and reviewed the required maintenance tasks
• Responsible for Connectivity issues among various Servers and various software components Storage
• Implemented SAN and DAS dual port SCSI interface on Linux and Windows using LSI20320 SCSI card
• Added new hard disk, created new file system, & Logical volume management(LVM) and mounted
• Used Infotrend Eonstor A08U-C2412 (SCSI-SATA RAID Storage Array) Software Infotrend RAID Watch 2.2.A, 400+500GB Hitachi SATA Disk Used SCSI VHDCI 68 (Very High Density Cable Interconnect) cable

Environment: Red Hat Enterprise Linux, Oracle, PowerBuilder, Toad, Windows 2003 Server, Java, Trend Micro Antivirus, Dell PowerEdge1300, 1500, Acer Server, Citrix, VOIP, WebEx

Confidential

System Administrator

Responsibilities:

• Installed and configured Red Hat Linux Server and used Kick-start for unattended Installation
• Installed and configured DNS Server for training and Configured DHCP
• Installed and configured Samba Server for file and printer sharing
• Implemented Network File System(NFS) for file sharing and network installation
• Implemented Network Information System(NIS) for user authentication
• Installed and configured oracle 8i on Red Hat Linux server
• Uploaded and downloaded files between Remote and Local servers using FTP
• Installed and configured Apache/Tomcat/Java/MySQL for the e-learning projects
• Installed and configured Squid proxy for net sharing
• Configured the Software and Network on AIX RS/6000 machines
• System Backup and restore
• Defined and managed subsystems (Printing, networks….)
• Managed system resources (for example, disk space)
• Documented system configuration
• Scheduled backup for server
• Planned Pre installation for system policies and storage allocation
• Worked on HP-UX 11i in HP-9000 Server and Setup Network using SAM (System administrator Management)
• Installed X manager emulator software in windows machine to access Common
• Desktop Environment from HP-UX server

Environment: Red Hat Linux 7&8, Windows 2000 Server, Solaris 8, IBM AIX, Star Office Suite, Oracle 8, Java, Apache, MySQL, Tomcat