• Administrating and Troubleshooting Unix servers running business critical applications and their database running on clustering technologies like VERITAS and red hat cluster• Installing and partitioning disk drives. Creating, mounting and maintaining file systems including VxFS, ext3 and cfs to ensure access to system, application and user data. Performed auto mount administration.• Kernel parameters tuning based for system performance and application/database requirement• Hardware troubleshooting for Dell, HP and oracle servers.• Tweaking multipath configurations and troubleshooting for various Storage issues.• Maintaining appropriate file and system security like firewalls, monitoring and controlling system access, changing permission, ownership of files and directories, maintaining passwords, assigning special privileges to selected users and controlling file access, monitoring status of process in order to increase the system efficiency• Working on configuration and management of automation technologies like splunk and puppet• Working on real-time OS boot issue including post patching issues like rpm and yum database corruption , grub corruption • Maintenance of large scale NAS and SAN level File system

• Troubleshooting in RHEL , HP-Unix and Solaris operating system issues along with VERITAS and xen app cluster and VMware host• Performance monitoring, usage and load of the system, changing kernel parameters for better performance• Creating and maintaining users, profiles, security, rights, disk space and process monitoring.• RPM and YUM package installations, patch and other server management.• Monitoring server activity logs, database and log usage, growth and volume status.• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing• LVM and partition management including file system check and swap space management along with veritas volume manager• iscsi management , adding and removing LUNS from storage• Creating File system and configure to available network through NFS and SAMBA including both server configuration• DNS , FTP and Mail server configuration and maintenance

• Server Administration including operating system Suse linux & AIX• Raid management for various raid level along with mirroring• Storage troubleshooting over network and hardware(EMC,DS3200 & N Serise)• Monitoring & troubleshooting with performance related issues on servers (Nagios)• Configuring and managing network interfaces• Creating server check script on different platforms like ,Shell ,C & C ++• Installation of patches and packages• Providing real-time resolution for virtualization, network and OS level issues• Configuring and monitoring Disk mirroring, striping using LVM

• worked on Relational Database management (mysql/mssql)• troubleshooting linux and windows os• Software Troubleshooting and Bug Reporting• Server Maintenance(Tomcat)• Providing real time solution for issue related to software,database and application server• Analyzing data and conducting compatibility and quality assurance testing• working on Data Migration Script Development (PLSQL)• creation and modification of several functions of software (jsp and javascript)