File Systems

Quotas

See the chart at the bottom of the page for file system and storage quotas

Home Directories

• All production OCF and SCF LC systems share home directories that reside on global file system /g, NFS mounted from several dedicated servers.
• See EZFILES and Home Directories for details.

Parallel File Systems

• Parallel file systems are large, shared, file systems used for parallel I/O.
• All machines except CORAL machines use Lustre open source parallel file systems.
• CORAL machines (Ray, RZManta, Shark; Lassen, RZAnsel, Sierra) use GPFS from IBM.
• For additional information, see EZFILES and the LC Resources Tutorials Parallel File Systems Information.

Temporary File Systems

• Various temporary file systems (global and local) are for system use, temporary storage of I/O local to each machine, or large temporary storage for I/O shared among many machines.
• See EZFILES and Temporary File Systems for details.

/usr/workspace File Systems

• 2 TB of NFS mounted file space is provided for each user and group.
• These file systems are similar to home directories, but are not backed up. For details, see EZFILES and /usr/workspace File Systems.

/usr/gapps and /usr/gdata File Systems

•  LC provides shared, collaborative, NFS mounted file space for user developed and supported applications and data on LC systems.
• See /usr/gapps, /usr/gdata File Systems and /usr/gapps File System for details.

Archival Storage Hardware

• High Performance Storage System (HPSS) archival storage is available on all LC production systems.
• For more information, see EZSTORAGE, Archival HPSS Storage, and the HPSS User Manual.

File System Status

• The file system status displays real-time status information on LC file systems. It also shows which file systems are mounted by each cluster and file system bandwidth between clusters.
  • CZ: CZ File System Status or mylc.llnl.gov
  • RZ: RZ File System Status or rzmylc.llnl.gov
  • SCF: SCF File System Status or mylc.llnl.gov