N Cathirena
Mainframe Storage Administrator
Bengaluru
Summary
Experienced mainframe and storage professional with over 8 years in the industry. Adept at juggling multiple priorities while maintaining a positive attitude. Organized and dependable approach, consistently achieving company goals through efficient practices. Team player with strong verbal and communication skills, dedicated to fostering collaboration and driving success within the organization.
Overview
9
9
years of professional experience
5
5
years of post-secondary education
2
2
Certifications
Work History
Senior Analyst II Infrastructure Services
DXC Technology
07.2023 - Current
- Mentored junior analysts, fostering professional development while enhancing overall team performance.
- Enhanced team productivity by streamlining workflow processes and implementing time-saving strategies.
- Configured and created CSM sessions for clients and implemented Disaster Recovery strategy using Global Mirror in CSM.
- Handled and facilitated DR activities on CSM.
- Experienced in managing and correcting during replication failures.
- Daily monitor on Health checks across all accounts.
- Monitoring storage pools and initialization of DASD volumes and optimization.
- Handled data recovery using ADRDSSU ,FDR and CADISK.
- Can work and troubleshoot issues with CADISK archive/restore/merge.
- Diagnosed and fixed tape related errors using CA1 utilities.
- Implemented TMSEXTEND and worked on any errors related to it.
- Demonstrated TDMF Migration for a client.
- Handled VTS data copy for a migration project.
- Setup storage policies and ACS routines using SMS Classes.
- Optimized backup jobs.
- Demonstrated tape setup on VTS GUI.
- Delivered oncall support for clients, addressing both BAU and Project tasks.
Professional 1- System Engineer
DXC Technology
07.2020 - 07.2023
- Resolved issues and escalated problems with knowledgeable support and quality service.
- Proposed technical feasibility solutions for new system designs and suggested options for performance improvement of technical components.
- Worked with stakeholders to determine implementation and integration of system-oriented projects.
- Volume initialization on JES3/JES2
- Handled jobs with CA DISK & FDR.
- Regular ACS routine changes and SMS setup coordinating with customer
- Worked on CA1 - Pointer issues and job errors related to CA1
- Maintaining regular health checks
- Coordinating with Support team when encountered with hardware issues
- Configured, tested and maintained health check jobs to achieve maximum performance.
Senior Analyst
HCL Technologies Pvt Ltd
02.2018 - 07.2020
- Handled 3 accounts to provide continuous support in Mainframe Storage
- Delivery of Mainframe Storage Services by providing L2-level support
- In-depth knowledge and experience in fundamental storage management concepts such as DFSMSHSM,DFSMSDSS.
- Providing 24x7 on-call support
- Raising Change records to fix hardware and software issues with Operations Team
- Maintaining CA1 House Keeping jobs
- Setting up Incremental backup and Full volume backup jobs using ADRDSSU
- Initializing/Reclaiming volumes, adding/removing volumes from storage group, VTOC recovery of corrupted volumes.
- Handled Alias creation requests.
- Worked on Data recovery using ADRDSSU,FDR.
- Worked on adding scratch tapes on VTS GUI.
- Management and administration of Virtual Tape environments
- Coordinated with support team for Microcode changes and upgrades
- Adding /Removing tapes in virtual tape server
- Worked on HSM CDS reorg
- Defining New ACS Constructs and updating ACS routines based on customer requirement
- Flash copy setup between two different LPARs
- Setup ACS routines for new set of HLQ with different dataset allocation attributes and updating ACS on regular intervals based on requirement.
- Implementing Global Mirror setup as recovery procedure.
- SMS setup on new LPAR.
Graduate Engineer Trainee
HCL Technologies Pvt Ltd
07.2016 - 01.2018
- Prepared standard reports and documentation to communicate results to senior management.
- Demonstrated strong problem-solving skills while troubleshooting technical issues under tight deadlines.
- Participated inIBM training programs to continuously improve skills and stay current with emerging trends in the field.
- Reduction of incidents through proactive planning and strong debugging skills
- Raising Change records to fix hardware and software issues with Operations Team.
- Providing 24x7 on-call support and resolving incidents & problem tickets.
- Setting up Incremental backup and Full volume backup jobs using ADRDSSU
- Initializing/Reclaiming volumes, adding/removing volumes from storage group.
- Coordinated with support team for Microcode changes and upgrades
- Adding /Removing tapes in virtual tape server.
- Defining New ACS Constructs and updating ACS routines based on customer requirement
- Setup ACS routines for new set of HLQ with different dataset allocation attributes and updating ACS on regular intervals based on requirement.
Education
Bachelor of Technology - Information Technology
Jeppiaar SRR Engineering College
08.2012 - 04.2016
Higher Secondary - Mathematics & Science
Rosary Matriculation Higher Secondary School
06.2011 - 04.2012
S.S.L.C -
Rosary Matriculation Higher Secondary School
06.2010 - 04.2011
Skills
Disaster recovery
Data recovery
Problem solving
Client management
Health checks
Process documentation
Technical troubleshooting
IBM DS8K, TS7700
CA1 Tape management
JCL,REXX
TDMF
ADRDSSU,FDR,CADISK
Certification
Certified from IBM on DFSMS S884:DFSMS Implementation
Accomplishments
- DXC Champ Award - Feb 2023
- DXC Collaborator Award - May 2023
- Promoted from P1 to P2 - July 2023
- DXC Champ Award - Jan 2024
- DXC Collaborator Award - December 2024
- DXC initiated business visa in recognition for my work and dedicated. I hold business visa valid until October 2025.
Timeline
Senior Analyst II Infrastructure Services
DXC Technology
07.2023 - Current
Professional 1- System Engineer
DXC Technology
07.2020 - 07.2023
Senior Analyst
HCL Technologies Pvt Ltd
02.2018 - 07.2020
Graduate Engineer Trainee
HCL Technologies Pvt Ltd
07.2016 - 01.2018
Bachelor of Technology - Information Technology
Jeppiaar SRR Engineering College
08.2012 - 04.2016
Higher Secondary - Mathematics & Science
Rosary Matriculation Higher Secondary School
06.2011 - 04.2012
S.S.L.C -
Rosary Matriculation Higher Secondary School
06.2010 - 04.2011
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