IBM will do an on-site presentation of their GPFS/HPSS Interface (GHI) product. The topics and questions that were submitted to IBM are listed below.
The following link for current product documentation: http://www.hpss-collaboration.org/online_doc.shtml.

Topics

• General overview of intended use.
• HSM vs. backup.
• Difference between how GHI migrated files are stored in HPSS and how traditional client files are stored.
• Describe any scalability limitations and what we can do to minimize or avoid them. Will we hit a wall?
• Disk cache provisioning for GHI aggregation indexes.
• Day to day administration.
• Troubleshooting.
• Upgrade process.
• Roadmap of future enhancements.

Questions

• What other sites are running GHI in production?
  • How large are they?
  • How large are their GHI managed file systems?
  • What is their tape storage capacity?
• Do you recommend using 3rd party HPSS clients in parallel with GHI?
• If we choose to provide a 3rd party HPSS client such as HSI/HTAR to the users, is there any way to prevent them from archiving files that have already been archived via GHI?
• Is there a GHI command that will allow users to trigger archives immediately? There appears to be a command to stage data prior to needing it.
• Can we prevent users from initiating unintended mass recalls of data, running something like "file"?
• We will have accumulated a significant amount of data before deploying GHI. Describe how we would avoid overloading the system while catching up.
• How many FTE are typically required to support GHI?
• Will GHI development keep pace with GPFS upgrades?