John Torres-O'Callaghan
Oakley, CA
SysadminJohn@gmail.com
http://www.linkedin.com/in/jocallag

Skills

Work Experience

Longs Drugs Walnut Creek, CA
Senior Unix System Administrator 11/2007 - 07/2009
Unix Systems Programmer 07/2001 - 11/2007
  • Lead for SAN infrastructure: migration of SAN to newer switches and storage; automation of FlashCopy and Business Copy split-mirror backups, SVC space allocation, and usage reports.
  • Tivoli Storage Manager: TSM 5.x, shared libraries; overhaul of TSM policy hierarchy to simplify and reduce resource consumption while continuing to meet data storage requirements; design and implementation of web interface for TSM tape management and other tasks; conversion of remote sites from HP Data Protector to TSM.
  • Designed and implemented modular backup scripts providing unified interface and reporting independent of actual backup technology.
  • Designed and implemented extensible build scripts for automatic configuration of new in-store servers by hardware support techs.
  • Implemented system for automated tracking for extensive system information with alerting for changes.
  • Support of 500+ in-store HP-UX (11.11, 11.23) servers and 150+ corporate HP-UX (11.11, 11.23, Ignite-UX, HPVM, ServiceGuard), AIX (5.x, LPAR, VIO, HMC), and Linux (RHEL 4) environments.
  • Supported BIND 9 on central and in-store systems; adjusted server topology for performance and business continuity in the event of outages; creation of segregated DNS environment for servers with PCI data.
  • I have had a lead role in training/mentoring new system adminitrators.
  • Documented many new and existing processes, including both technical actions and business/change management procedures.
  • Last sysadmin retained after acquisition by CVS for data migration, final backups and reporting, and systems shutdown.
Santa Clara University School of Engineering Santa Clara, CA
System Administrator 06/1997 - 06/2001
  • Responsible for the day-to-day operation of 45-computer Unix network of HP (HP-UX 10.20, 11.00), Sun SPARC (SunOS 4.1.x, Solaris 2.5 to 8), Linux, and SGI Irix systems. Also maintained 15+ machines operating standalone or in small groupings. Specific duties included basic system administration and software installation, system backups, web server management, mail system management, DNS, NFS, NIS, user problem resolution.
  • When hired, System Administrator role managed computers only in faculty offices and research labs, while the main student lab was managed separately. Based on my recommendation, we reorganized into a single computer support team, which greatly reduced redundancy and allowed more centralized administration and better use of server resources.
  • Handled most aspects of transition from all-HP system to heterogeneous environment for main computer system.
  • Developed web-based system for internal project management, including automatic hyperlinking and ability to give clients access on a per-project basis.
  • Assisted in administration of Windows NT/2000 systems as necessary, including creating a single set of scripts for user creation/removal across Windows and Unix.
  • Conducted regular surveys of user community for self-assessment and to seek out ways to enhance our environment.
Santa Clara University Engineering Design Center Santa Clara, CA
Student System Administrator 06/1995 - 06/1997
  • One of two people responsible for maintenance of 80+ seat computer lab running both Unix (HP-UX 9.x, 10.x) and Windows systems. Performed hardware and software installation and maintenance. Developed numerous shell scripts for routine administrative tasks.
  • Developed standardized system to automate installation and integration of software packages on all Unix workstations.
  • Migrated existing documentation to world wide web.
  • From 1/1997 until 6/1997, served as acting System Administrator for the School of Engineering, adding responsibility for computers in faculty offices and research labs.

Education