Roopa Reddy

Mainframe Storage Administrator with approximately 12+ years of IT experience supporting IBM z/OS storage environments and production operations. Hands-on experience with DASD and tape storage administration, DFSMShsm backup and migration, SMS constructs and ACS routines, catalog and GDG management, VSAM, storage space recovery, and backup and recovery operations.

Experience supporting IBM DS8000 storage, IBM TS7700 virtual tape systems, VTS/ATL environments, and disaster recovery and replication activities involving PPRC, SRDF, and FlashCopy. Skilled in troubleshooting production storage issues, resolving space and tape-related errors, monitoring storage resources, and coordinating operational work across onsite and offshore teams.

Senior Mainframe Developer - FedEx - Texas

(2025-08)

• Administer and support IBM DS8000 storage systems and IBM TS7700 virtual tape systems in an enterprise mainframe environment.
• Monitor DASD storage resources and support volume availability, utilization, and storage-related operational activities on IBM DS8000 systems.
• Support DASD backup and recovery activities, including Flash Copy and replication-related operations where applicable.
• Monitor IBM TS7700 and virtual tape operations; investigate tape mount, allocation, and tape-resource issues.
• Support tape copy, export, and recovery activities and coordinate resolution of tape-related production incidents.
• Assist with storage capacity and resource monitoring across DASD and tape environments and escalate hardware or subsystem issues through established support processes.
• Perform storage-related maintenance and monitoring for IBM z15 and z16 environments.
• Support mainframe backup, recovery, and disaster recovery activities, including storage-related IPL support.
• Work with DFSMShsm, DFSMS, ABARS, ISMF, ICKDSF, IDCAMS, ICF catalogs, VTS/ATL, TS7700, Copy Export/Recovery, CA 1, CR+, space recovery, PPRC, SRDF, and Flash Copy.
• Troubleshoot DASD and tape issues, including resource shortages, allocation errors, and related JCL problems.
• Support tape drives, disk units, and other infrastructure components through operational monitoring and preventive maintenance.
• Provide storage-related support for DB2 and IMS environments.

Mainframe Developer - Avis India

(2021-01 - 2024-08)

• Created and maintained ICF catalogs, user catalogs, aliases, and Generation Data Groups (GDGs).
• Resolved daily DFSMShsm issues involving backup, migration, recall, CDS reorganization, and primary and secondary space management.
• Updated SMS constructs and ACS routines based on application and storage requirements.
• Investigated control data set (CDS) issues and analyzed DCOLLECT reports to support storage management.
• Managed DASD and tape operations using mainframe system tools; supported VTS and ATL environments.
• Monitored DASD volume status and storage utilization and supported volume-level maintenance and space-management requests.
• Supported tape operations in VTS and ATL environments, including tape-copy and migration activities and investigation of tape-resource issues.
• Performed VSAM and GDG management, catalog reorganizations, HSM space management, and tape-copy migration.
• Supported production operations, including failed-job investigation and spool utilization monitoring.
• Contributed to storage and infrastructure capacity planning.
• Supported tape-copy and migration workflows, performed tape range updates, and related maintenance in RMM and ISMF.
• Monitored DASD, tape, HSM control data sets, catalog extent growth, drive status, VTS events, and storage performance.
• Performed DFSMShsm space management, ML1 dataset backup and recovery, and HSM CDS and RMM CDS reorganizations.
• Defined and maintained aliases, SMS environments, user catalogs, and GDGs; resolved GDG and alias definition or deletion issues.

Mainframe Storage Administrator - IBM - India

(2012-08 - 2020-08)

• Performed catalog reorganizations using the CR+ tool and resolved VSAM cluster issues involving KSDS, ESDS, RRDS, and LDS datasets.
• Troubleshot storage space abends (SB37, D37, and E37), tape errors, and replication issues.
• Performed DASD volume initialization and reclamation, ML1 volume initialization, tape repair, and scratch-volume additions.
• Executed FDR restores and INTS backups; maintained tape ranges in RMM and ISMF and supported tape-copy migration.
• Supported disaster recovery exercises and DASD replication activities, including PPRC; monitored replication and followed up on breakdowns. Added volumes to FDR backup jobs, created, and tracked change requests through approval processes.
• Managed storage space through dataset migration, backup, recall, and cleanup activities.
• Performed full-volume dumps to DASD or tape and supported DASD backups using FlashCopy and ADRDSSU / DFSMSdss.
• Monitored DASD volume availability and utilization and performed volume initialization, reclamation, and other routine volume-management activities.
• Supported FlashCopy-based backup and recovery processes and participated in PPRC replication monitoring and issue resolution.
• Monitored VTS and tape resources, supported tape-volume maintenance and scratch processing, and investigated tape drive and mount-related errors.
• Supported tape-copy and migration workflows, performed tape range updates, and related maintenance in RMM and ISMF.
• Monitored DASD, tape, HSM control data sets, catalog extent growth, drive status, VTS events, and storage performance.
• Performed DFSMShsm space management, ML1 dataset backup and recovery, and HSM CDS and RMM CDS reorganizations.
• Defined and maintained aliases, SMS environments, user catalogs, and GDGs; resolved GDG and alias definition or deletion issues.

Bachelor of Engineering (B.E.) - Computer Science and Engineering - Anna University Coimbatore (2011)