Burvil Chang

Systems Architect at DirecTV

Location
United States
Industry
Entertainment

As a LinkedIn member, you'll join 150 million other professionals who are sharing connections, ideas, and opportunities. And it's free! You'll also be able to:

  • See who you and Burvil Chang know in common
  • Get introduced to Burvil Chang
  • Contact Burvil Chang directly

View Full Profile

Burvil Chang's Overview

Current
Past
  • Web Programmer at SYKES CORPORATION
  • Website Management at CHINESE COMMUNITY CHURCH
  • Web Programmer at DIVERSITYWEB/UNIVERSITY OF MARYLAND
  • Consultant at BOOZ, ALLEN AND HAMILTON, INC
Education
  • University of Wisconsin-Madison
Connections

65 connections

Websites

Burvil Chang's Summary

Senior systems administrator/systems engineer for a wide variety of business applications. Particularly interested in systems architecture and optimization for Linux/Unix as well as Virtualization (Xen, VMware). Also interested in storage architecture (e.g. NetApp) and infrastructure (DNS, NIS, LDAP).

Specialties

Monitoring, perl, Redhat Enterprise Linux, DNS, Netapp

Burvil Chang's Experience

Systems Architect

DirecTV

Public Company; 10,001+ employees; DTV; Broadcast Media industry

April 2007Present (5 years 2 months)

Performed analysis of linux crashdump files for root cause analysis of server outages
setup scripts for automated failover between Ibrix cluster nodes at high load, network bond monitoring
Planned and coordinated migration of over 3TB of data to Netapp FAS3140 clustered filers
Setup and tested new version in isolated environment, then migrated to new servers
Performed troubleshooting due to firewall problems causing high load on NIS slaves
migrated DB2 tiebreaker functionality to gateways from legacy NIS slaves
Set up Infoblox DNS appliances in lab and 3 production environments (internal, DMZ, external)
Migrated from legacy BIND and Windows AD servers to NIOS
Designed, implemented NTP rearchitecture for scalability, redundancy using Cisco hardware & GPS sources.
Installed, configured and supported various n-tier systems running Java, JBoss and other third-party applications
Applications used mostly Oracle/DB2, with some MySQL and PostgreSQL on Redhat servers
Installed HP-UX for Oracle 10i database
Wrote and tested Oracle client install script, coordinated to put in kickstart
Wrote, tested and implemented script to manage DB2 logs
Managed 200 Citrix Xen virtual machines spread over 12 Dell servers; migrated storage repositories to NetApp
Documented and tested procedures for reboot of legacy system, delegated to junior administrators
Upgraded and maintained Docushare, running on Redhat clustered systems.
Integration environment setup for production Multichannel applications
Mentored and managed work of 4 junior systems administrators and multiple interns
interviewed candidates for operator, engineer, intern positions
Taught perl scripting classes to team members
Setup performance monitoring for multiple devices in Zenoss
Wrote and tested multiple perl and shell scripts to monitor for application availability and alert states
Configured multiple applications and servers to send traps to SMARTS

Staff Engineer 2

DirecTV

Public Company; 10,001+ employees; DTV; Broadcast Media industry

May 2006April 2007 (1 year)

Migrated multiple java applications from HP ServiceGuard to Redhat Cluster Manager
Installed and deployed Jboss multiple applications with Ant and by hand
Installed HP-UX on Itanium servers for Oracle RAC
Migrated and optimized database reconciliation of multiple Oracle systems
Setup and managed DB2 HADR and TSM on multiple database servers running RHEL 4.x and 5.x
Managed Networker systems backup for over 100 devices
Wrote and tested perl script to better present backup results
Planned and implemented migration of legacy system to faster hardware in a more robust environment
Managed tier-2 support (team of 2) of application that controlled most of DirecTV scheduling and programming
Wrote applications to streamline and monitor java application and Sybase database
Provided 24x7, on-call support for broadcast-critical application

Systems Administrator

The Aerospace Corporation

Nonprofit; 1001-5000 employees; Defense & Space industry

March 2002April 2006 (4 years 2 months)

Provided support and consultation for base of 280 users in a multiple Windows/Solaris/Linux servers
Maintained various applications, such as IDL, automounter, volume manager in Solaris 7/8/9
Provided documentation and support for system administrators in installing SSH
Gathered user requirements and evaluated current IT infrastructure to determine future needs
Documented current and proposed architectures, with specifications on each server
Presented information to management and users
Installed, configured and tested multiple packages and patches on servers running Solaris, Redhat Linux
Managed 6 TB of data on Network Appliance Filer for cross-platform access
Performed systems upgrades and other maintenance/optimization for multiple versions of Solaris
Implemented and managed quotas and systems auditing in Solaris 7/8 on systems with RAID 5 arrays
Managed user accounts, printer queues, logical volumes and filesystems on multiple Unix servers
Monitored performance and system status from 360 targets using snmp, Flexlm license manager, Nagios and other scripts
Analyzed and documented performance monitoring data for computing bottlenecks
Installed and configured Subversion version control software as well as several code repositories
Managed sendmail and postfix MTAs on multiple Solaris and Linux servers
Configured multiple APC SmartUPS UPSes for redundancy and monitoring
Wrote and maintained perl scripts to manage users and permissions on Windows and Solaris systems
Migrated department-wide information webserver from SnapOS to Redhat Linux on RAID 1 array
Installed, configured and managed content on Apache webserver
Compiled and maintained information on printers into Mysql relational database
Designed user-friendly interface in Perl/CGI for searching for a printer
Formalized, streamlined, documented and implemented backup procedures
Wrote Perl script to parse and summarize logs, which would notify administrators in event of failure

Software Engineer

HOSTPRO/INTERLAND

April 2000October 2001 (1 year 7 months)

Provided guidance in how to integrate load balancing, caching and SSL acceleration products with control panel
Served as contact for one of Hostpro's largest customers who wanted to modify Perl script that changed DNS table
Performed system and unit testing on server manager software on FreeBSD and IRIX (SGI) servers
Acted as liaison between vendor and systems administrators to establish high-volume storage solutions
Installed and configured Data ONTAP with NFS and clustered failover on Network Appliance filer
Served as point of contact for planning and coordinating migration of 10 GB of live customer data and OS upgrade
Configured filers in cluster configuration with failover capability
Created and optimized script that checked over 38000 sites to ensure CGI scripts worked correctly
Analyzed log files of summary statistics, which included machine, error type, and other data
Planned and implemented farm of Solaris, OpenBSD, FreeBSD, and Linux servers
Configured Apache webservers on farm to be accessible to public, and accessible via NFS to Network Appliance filer
Troubleshot TCP/IP connectivity issues to ensure that VLANs and ports were configured correctly
Provisioned secure bastion host to serve as point of entry to server farm and point of connection to other servers
Improved security by installing, configuring SSH, scp, turning off unnecessary services and other measures
Debugged various CGI/Perl scripts on UNIX, NT, IRIX, and Linux machines
Responsible for correctly interfacing CGI scripts on Apache web servers with ASP front end
Designed user interface to add, delete and configure SGI MediaBase capability for high-end clients
Monitored health and status of media server in regards to disk space, processes and CPU usage
Documented specific steps taken in installing and configuring bastion host and Network Appliance filer
Illustrated interdependencies and functions of various web server scripts in README file

Web Programmer

SYKES CORPORATION

Public Company; 10,001+ employees; SYKE; Outsourcing/Offshoring industry

November 1999March 2000 (5 months)

Software Development and Testing
Assisted in evaluating configuration management software and establishing programming standards and conventions
Helped to establish IBM's Center for E-business Innovation in Santa Monica

Website Management

CHINESE COMMUNITY CHURCH

May 1998February 2000 (1 year 10 months)

Performed a cost-benefit analysis of various options for a new website
Designed layout, organization, javascripts and graphics to meet client demands
Wrote, edited, updated and fact checked web content on 100 pages using hard-coding and Dreamweaver on Windows 95/NT

Web Programmer

DIVERSITYWEB/UNIVERSITY OF MARYLAND

February 1999October 1999 (9 months)

Software Development and Testing
Maintained over 4100 lines of Perl code to accommodate new web site design
Modularized script to be more efficient and readable using a Sun Solaris platform
Wrote script to find and modify appropriate HTML documents, reformat the page and add new headers and footers
Wrote script to parse list of bounced messages for pertinent information

Public Company; 10,001+ employees; Management Consulting industry

March 1997July 1998 (1 year 5 months)

Data Extraction and Analysis
Extracted and analyzed various types of data from Superfund Oracle database using Powerbuilder, Access and CERCLIS 3
Performed statistical modeling of remedial designs, remedial assessments and other Superfund actions
Led junior staff in data queries and other remedial program requests
Systems Support
Provided on-site support for EPA, which required client interaction and immediate response
Installed and maintained Powerbuilder, Microsoft Access and CERCLIS3 software on multiple computers

Burvil Chang's Education

University of Wisconsin-Madison

B.S, Civil Engineering

1996

Burvil Chang's Additional Information

Websites:
Interests:

Systems Administration

Groups and Associations:

Contact Burvil for:

  • job inquiries
  • reference requests
  • getting back in touch

View Burvil Chang’s full profile to...

  • See who you and Burvil Chang know in common
  • Get introduced to Burvil Chang
  • Contact Burvil Chang directly

View Full Profile

Viewers of this profile also viewed...