Spectrum Scale Usergroup Committee

Group Chair: Michael Holliday

Michael is the Principal Research Infrastructure Developer (Storage Specialist) at the Centre for Advanced Research Computing (ARC), University College London. He has around 8 years experience running multi petabyte IBM Storage Scale filesystems.


User group liaisons:

Ulf Troppens is with IBM Spectrum Scale Development and IBM focal for the worldwide Spectrum Scale User Group.

Christopher Maestas is an IBM World Wide Executive Solutions Architect with IBM Storage Scale focus, he has 12 years IBM Storage Scale experience and regularly supports the user group.

Kedar Karmarkar is a Software and Solutions Architect for IBM Storage Scale, with over 11 years of IBM Storage Scale experience.

USA Principal: Kristy Kallback-Rose

Kristy Kallback-Rose manages the storage team at Indiana University in HPC systems. She has over three years experience running Spectrum Scale and before that working with OpenAFS and HPSS. LinkedIn

USA Co-Principal: Bob Oesterlin

Bob Oesterlin works for Nuance Communications as a senior storage engineer for HPC grid. Prior to this Bob worked at IBM and has over 15 years experience with Spectrum Scale. He was is a founding Elder of the OpenAFS group.  – LinkedIn

USA Support: Bill Anderson

Bill works in the HPC Storage group at NCAR and has over 3 years of experience with Spectrum Scale and over 15 years of experience with a variety of other storage systems (e.g., HPSS, Spectrum Archive).


Australia/Pacific: Chris Schlipalius

Chris Schlipalius

Chris Schlipalius manages the data storage team at the Pawsey Supercomputing Centre in Perth Western Australia.
This team manages GPFS and HSM (DMF) services.
He has over 7 years working with GPFS and DDN Storage, and over 20 years working with Enterprise Servers and Storage Infrastructure including Cisco UCS and EMC Isilon and VNX.

Systems Support: Laurence Horrocks-Barlow

Laurence is the Technical Director for OCF Limited with over 13 years experience working with multi petabyte IBM Storage Scale based technologies including GNR (ESS/DSS/GSS) variations. He is responsible for OCF Limited’s research and development activities including its technology portfolio.

Laurence supports the systems and services that run the GPFS Usergroup.