Matthew O'Brien

Details

About

I have enjoyed 25 years’ experience in Software and OS support in various flavors of UNIX, including AIX, Linux, DYNIX/ptx and Solaris. I have been recognized for my initiative and exceptional analytical and problem-solving skills. I am very experienced working as part of a team, supporting external customers with mission critical, high-end systems, often in high pressure situations. In 2013, I received the IBM Means Service Award in recognition of outstanding achievement.



Specialties: .



• Extensive technical knowledge of Unix operating systems and system services including

• Kernel

• Boot process

• Logical Volume Manager (LVM)

• JFS/JFS2 file systems

• Automount

• NFS

• Security

• Auditing and accounting

• TCP/IP and network protocols including SMTP, FTP, TCH, RSH, SSH, etc)

• NTP

• DNS

• Experience with operating system installations, migrations, update and restoress using Network Installation Manger (NIM) and mksysb

• Experience with High Availability clustering technologies such as IBM PowerHA System Mirror and Oracle RAC

• Experience with Virtualization (PowerVM)

• Experience with installation and configuration of Hardware Management Console (HMC) as well as LPAR creation and deployment

• Experience in installing and configuring WPARs

• Familiarity with enterprise virtual storage configurations including Fiber Channel SAN using EMC, Hitachi, and IBM storage arrays, EMC PowerPath software and IBM MPIO

• Familiar with performance debugging and tuning commands (perfpmr, topas) to identify and resolve performance issues

• Familiarity with network tuning and troubleshooting across WAN and LAN environments

• Understanding of kernel level features such as virtual memory manager, CPU scheduling algorithms, and lock contention.

• Experience with common debugging tools such as kernel traces, network trace, Wireshark, dbx, KDB

• C programming language and UNIX shell script programming