This document provides a summary of Babu Packrisamy's experience and qualifications. He has over 16 years of experience in Unix/Windows administration including expertise in Solaris, Linux, Veritas Cluster Server, and storage management technologies. Currently he works as a Senior Unix Engineer for Optimum Solutions in Singapore where he provides remote infrastructure support and implements patches/upgrades. He has previously held technical leadership roles and has extensive experience managing Unix environments for large clients such as IBM.

1. BABU PACKRISAMY
BABU PACKIRISAMY Email:babuvrp@rediffmail.com
Mobile Number +65 81682370
EXPERIENCE SUMMARY
• Total 16+ years of IT Experience.
• 16+ years experience in Unix/Windows Administration, knowledge in Solaris Volume
Managers, Veritas volume manager and Veritas Cluster
• 10+ years experience in Linux Administration, knowledge in LVM, Veritas volume manager
and Veritas Cluster
• Strong Technical and problem solving Skills in Solaris9,10,11,LDOM, Redhat Linux 6.0,
SuSE Linux, VCS, Windows Server 2012, 2008 and 2003, LVM and VXVM.
• Work effectively independently as part of a team.
• Excellent organizer with solid planning and problem solving skills
Educational Qualification
D.E.C.E (Diploma in Electronics and Communication Engineering)
From Board of Technical Education, TamilNadu.
Professional Qualification
 Sun Certified System Administrator Solaris 9 (SCSA)
WORK HISTORY
Organization Designation Duration
OPTIMUM Solutions PVT LTD Singapore
Senior Unix Engineer Feb 2015 to Till to
date
IBM INDIA PVT LTD
Technical Services Team
Lead
Feb 2012 to Jan
2015
Mphasis on HP Company
Principal Infrastructure
Engineer
Jan 2010 –Feb 2012
Magna InfoTech
Senior Solaris
Administrator
Apr 2009 – Jan
2010
Tech Mahindra Ltd
Senior Technical
Associate
Nov 2007 – Apr
2009
Uniware Systems Pvt Ltd System Administrator Dec 2006-Nov 2007
Care computer solution Pvt Ltd
Customer Support
Executive
OCT 2000-Dec 2006

2. BABU PACKRISAMY
WORK EXPERIENCE
1. Feb 2015 to Till date
OPTIMUM SOLUTIONS SINGAPORE PVT LTD.
Senior Unix Engineer
Job Responsibilities
Job Responsibilities on Solaris
• Providing remote infrastructure management support to all Unix servers in their data
centers.
• Implementing with Customer recommended Latest Patches, Packages and Impact
Analyzing.
• Installation and configuration of Solaris10 and Solaris11 on Sun And Intel Servers.
• Installation and configurtion on Zones of Solaris 10 and Solaris11.
• Installation and configurtion on Ldoms
• OS migration Solaris8, 9 to Solaris10
• LDOM installation and Configure
• VCS Migration 4.0 to 5.0
• File system migration UFS to ZFS.
• File system migration VXFS to ZFS
• Creating and administering of disk groups, sub-disks, plexes and volumes
• Encapsulation and Unencapsulation of root disk.
• Disabling and enabling multipathing for specific devices
• Trouble shooting HBA Related issues.
• Installation and Upgradition Veritas Cluster Server
• Configuration of LLT and GAB.
• Troubleshooting VCS startup and LLT link failure issues.
• Creation of VCS Service Groups.
• Creation of all types of resources like disk group, volume, mount and other database
and application resources.
• Controlling VCS behavior at the service group level & resource level.
• Handling VCS resource faults.
• Performing various activities like Failover, Switch Over, Freezing and unfreezing The
service groups.
• Bringing a resource/service group online and/or taking a resource/service group offline
Job Responsibilities on Linux

3. BABU PACKRISAMY
• Implementing with Customer recommended Latest Patches, Packages and Impact
Analyzing.
• Installation and configuration of Red Hat Linux OS through DVD, ISO file and Kick Start
File.
• LVM (Logical Volume Manager): Extend the size of LVM, Reduce the size of LVM, LVM
Snap Shot.
• Network Configuration & Troubleshooting
• Sound knowledge of installing and configuring servers - FTP, SAMBA, HTTP (Apache),
DNS, DHCP, NFS, AUOTFS.
• Configuration of Hardware and Software RAID. Disk replacement and File system
recovery
• Performance Monitoring and Tuning Linux
• Installation and Upgradition Veritas Cluster Server on Redhat Linux
IBM INDIA PVT LTD
2. Feb 2012 – Jan 2015
Technical Services Team Lead
Job Responsibilities
Job Responsibilities on Solaris
• My role here is a Subject Matter Expert and help in all critical and escalated issues.
• Providing remote infrastructure management support to all Unix servers in their data
centers.
• Take part in critical outages, work with the business recovery managers, work for a
solution for chronic issues, take part in Go-Live meetings, prepare extensive RCA for
outages & failed changes for the Project Executives to present it to the customer.
• Installation and configuration of Solaris10 and Solaris11 on Sun And Intel Servers.
• Installation and configurtion on Zones of Solaris 10 and Solaris11.
• Installation and configurtion on Ldoms
• OS migration Solaris8, 9 to Solaris10
• VCS Migration 4.0 to 5.0
• File system migration UFS to ZFS.
• File system migration VXFS to ZFS
• Creating and administering of disk groups, sub-disks, plexes and volumes
• Encapsulation and Unencapsulation of root disk.
• Removing and replacing a disk in a Sun StorEdge disk array
• Disabling and enabling multipathing for specific devices

4. BABU PACKRISAMY
• Trouble shooting HBA Related issues.
• Installation and Upgradition Veritas Cluster Server
• Configuration of LLT and GAB.
• Troubleshooting VCS startup and LLT link failure issues.
• Creation of VCS Service Groups.
• Creation of all types of resources like disk group, volume, mount and other database
and application resources.
• Controlling VCS behavior at the service group level & resource level.
• Handling VCS resource faults.
• Performing various activities like Failover, Switch Over, Freezing and unfreezing The
service groups.
• Bringing a resource/service group online and/or taking a resource/service group offline
Job Responsibilities on Linux
 Installation and configuration of Red Hat Linux OS through DVD, ISO file and Kick Start File.
• Yum Server for Linux package installation local or network
 Linux Package installation from RPM
• LVM (Logical Volume Manager): Extend the size of LVM, Reduce the size of LVM, LVM Snap
Shot.
• Network Configuration & Troubleshooting
• Sound knowledge of installing and configuring servers - FTP, SAMBA, HTTP (Apache), DNS,
DHCP, NFS, AUOTFS.
• ISCSI Target Server (Sever Side) and ISCSI Initiator (Client Side)
• Device Mapper Multipath using ISCSI server.
 Configuration of Hardware and Software RAID. Disk replacement and File system recovery
• Performance Monitoring and Tuning Linux
 Installation and Upgradition Veritas Cluster Server on Redhat Linux
Mphasis on HP Company
3. Jan 2010 – Feb 2012.
Principle Infrastructure Engineer.
Job Responsibilities on Solaris:
• Installation and configuration of Solaris10 on Sun And Intel Servers.
• Installation and configurtion on Zones of Solaris 10.
• Implementing with Customer recommended Latest Patches, Packages and Impact
Analyzing.
• Configuring and trouble shooting NFS server and client issues.
• Configured, Management & maintaining NIS and Ldap user accounts
• Handling 3200 Servers.
• Configuring and trouble shooting RSC and ALOM Console.
• Configuring the Vintela Authentication on Solaris 10.
• Configuring the IPMP on Solaris

5. BABU PACKRISAMY
Job Responsibilities on Veritas Volume Manager :
• Installation and Upgradition Veritas Volume Manager.
• Discovering and configuring newly added disk devices and dynamically adding disk
arrays to the servers.
• Placing disks under VxVM control - Initializing the disks, creating volumes, file systems &
mounting them.
• Growing and Shrinking the Volumes as per the Business Needs.
• Creating and administering of disk groups, sub-disks, plexes and volumes
• Encapsulation and Unencapsulation of root disk.
• Removing and replacing a disk in a Sun StorEdge disk array
• Disabling and enabling multipathing for specific devices
• Trouble shooting HBA Related issues.
Job Responsibilities on Veritas Cluster Server :
• Installation and Upgradition Veritas Cluster Server
• Configuration of LLT and GAB.
• Troubleshooting VCS startup and LLT link failure issues.
• Creation of VCS Service Groups.
• Creation of all types of resources like disk group, volume, mount and other database
and application resources.
• Controlling VCS behavior at the service group level & resource level.
• Handling VCS resource faults.
• Performing various activities like Failover, Switch Over, Freezing and unfreezing The
service groups.
• Bringing a resource/service group online and/or taking a resource/service group offline
Magna InfoTech
4 . Apr-2009 – Jan 2010
Senior Solaris Administrator
Project – IBM , Chennai
Job Responsibilities on Solaris:
• Installation and configuration of Solaris9 and 10 on Sun Servers.
• Installation and configurtion on Zones of Solaris 10.
• Involved to build and set-up new Solaris servers by using jumpstart installation
methods.
• Implementing with Customer recommended Latest Patches, Packages and Impact
Analyzing.
• Configuring and trouble shooting NFS server and client issues.
• Monitoring and Trouble Shooting Veritas Cluster
• Configured, Management & maintaining NIS user accounts
• Handling 620 Servers.

6. BABU PACKRISAMY
• Configuring and trouble shooting RSC and ALOM Console.
• Proactively monitor and manage application and system resources: daemons, processes,
onlines, interfaces, file systems, and CPU / Memory utilization.
• Installation/Upgrade, System Startup & System Shutdown as needed.
• Maintaining and changing VERITAS File System.
• Installation and configuration of VXVM 4.1
• Creating and managing diskgroups, Volumes and Creation of VXFS and mounting FS.
• Volume resizing on Veritas Filesystems as per requirements
• Root disk Encapsulation and Root Mirroring using VXVM.
• Installing Emulex HBA drivers and adding Storage LUNs for SAN.
• Maintaining system logs and ensuring system security & integrity.
• Automated jobs by using Cron.
• Maintaining system logs and ensuring system security & integrity.
TechMahindra
5. Nov 2007 – Apr-2009
Senior Technical Associate – TG2 (UNIX Admin)
Job Responsibilities on Solaris:
• Installation and configuration of Solaris9 and 10 on Sun Servers.
• Installation and configurtion on Zones of Solaris 10.
• Involved to build and set-up new Solaris servers by using jumpstart installation
methods.
• Configured, Management & maintaining NIS user accounts
• Handling 420 Servers.
• Maintaining and changing NFS file systems .
• Maintaining and changing VERITAS File System.
• Installation and configuration of VXVM 4.1
• Creating and managing diskgroups, Volumes and Creation of VXFS and mounting FS.
• Volume resizing on Veritas Filesystems as per requirements
• Root disk Encapsulation and Root Mirroring using VXVM.
• Installing Emulex HBA drivers and adding Storage LUNs for SAN.
• Proactively monitor and manage application and system resources: daemons, processes,
onlines, interfaces, file systems, and CPU / Memory utilization.
• Monitoring the File system and Backup.
• Performing remote administration for remote Unix/Solaris servers.
• Monitoring the server performance and checking the disk spaces of servers
• Monitoring and Maintaining the File systems for Production/Development/ Testing
environment.
• Routine Checking of process alerts, disk space alerts, Performance alerts .
• Installation and configuration of new NIC cards and Multiple NIC cards in same m/c.
• Group accounts creation and Management.
• Patches Updates from sunsolve.com
• Installation/Upgrade, System Startup & System Shutdown as needed.

7. BABU PACKRISAMY
• Maintaining and changing NFS file systems .
• Maintaining and changing VERITAS File System.
• Installation and configuration of VXVM 4.1
• Creating and managing diskgroups, Volumes and Creation of VXFS and mounting FS.
• Volume resizing on Veritas Filesystems as per requirements
• Root disk Encapsulation and Root Mirroring using VXVM.
• Installing Emulex HBA drivers and adding Storage LUNs for SAN.
• Using Montring tool NETCOOL and TANDEM.
• Maintaining system logs and ensuring system security & integrity.
• Automated jobs by using Cron.
Uniware Systems Pvt ltd
6. Dec 2006 – Nov-2007
System Administrator
System support activities include:
• Server Maintenance (SUN Solaris 9).
• User Maintenance (More over 250 User).
• Handling 60 servers.
• Performance analysis of the SUN systems using, Vmstat, Iostat and Netstat value.
• Installation, configuration and Maintenance of NIS Master Servers and Clients.
• Configured, Management & maintaining NIS user accounts.
• Troubleshooter for file system crash, disk space problems, and network problems.
• Monitoring Virtual memory, adding additional swap space as needed.
• Installed & upgraded Solaris, SAMBA server.
• File System administration and management like monitoring various logs, file system
sizes etc.
• Maintaining and changing file systems & disk assignments using meta disk.
• Installation/Upgrade, System Startup & System Shutdown as needed.
• Processes administration and management like monitoring, start/stop/kill various
processes/sub process.
• Documented various regular administrative tasks and backup procedures etc.
• Taking regular & incremental backups of file systems & databases.
•
Care Computer Solution Pvt Limited
7. Oct 2000 – Dec-2006
System Administrator
System support activities includes
• Server Maintenance (SUN Solaris 9).
• User Maintenance (More over 250 User).
• Handling 60 servers.
• Performance analysis of the SUN systems using, Vmstat, Iostat and Netstat value.
• Installation, configuration and Maintenance of NIS Master Servers and Clients.
• Configured, Management & maintaining NIS user accounts.
• Troubleshooter for file system crash, disk space problems, and network problems.

8. BABU PACKRISAMY
• Monitoring Virtual memory, adding additional swap space as needed.
• Installed & upgraded Solaris, SAMBA server.
• File System administration and management like monitoring various logs, file system
sizes etc.
• Maintaining and changing file systems & disk assignments using meta disk.
• Installation/Upgrade, System Startup & System Shutdown as needed.
• Processes administration and management like monitoring, start/stop/kill various
processes/sub process.
• Documented various regular administrative tasks and backup procedures etc
• Taking regular & incremental backups of file systems & databases.
• Installing, Configuring and Administrating Microsoft Windows 2003, 2008 and 2012 Server and
Active Directory Services; Organizational Unit (OU); Active Directory Group Policy Objects
(GPO); Group Policy Management Console (GPMC).
• Creating and managing Domains, Preparing Disaster Recovery strategies, offering technical
support to users, upgrading software and handling user credentials, managing File server and
Print server with proper approval and documentation based on business needs.
Personal Data
Nationality Indian
Marital status Married
Passport Details H9239233 & 23.07.2020
VISA Status Employment Pass
Language known English & Tamil
Year of Birth 08.04.1977
Address for Communication BLK 511, #06-195,
Bukit Batok ST 52,
Singapore - 650511