Due to COVID-19 and the subsequent shelter-in-place for our area, LLNL is operating in "Minimum Safe Operations" mode.
As such, our onsite LC Hotline (call center) is closed.
If you need to reach the Hotline, email is the best way to reach them at this time:
Technical Consultants: lc-hotline@llnl.gov | Account Specialists: lc-support@llnl.gov | LC Operations (24/7): mfopers@llnl.gov

For more information on Minimum Safe Operations at LLNL, see https://www.llnl.gov/

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LC Hotline:

During Minimum Safe Operations:
Technical Consultants | lc-hotline@llnl.gov
Account Specialists | lc-support@llnl.gov
LC Operations (24/7) | mfopers@llnl.gov

Hours

Monday–Friday
8am–12pm, 1–4:45pm
B453 R1103 | Q-clearance area

Should I Call LC Hotline
or 4-HELP?

File Systems

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

1 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