Data Storage Overview
There are three data storage components accessible from TSCC:
- Home Area Storage (Dual Copy Storage)
Home areas on TSCC are mounted over NFS using ZFS as the underlying file system. Each user has a 100-GB limit. This type of storage is for general use, including compiling and testing of code under development, and for preservation of important files. Backup Policy
- Lustre Storage PFS (Single Copy Storage)
The SDSC high performance parallel file system known as Data Oasis is available from TSCC. It has a minimum of 200 TB of scratch space available to users. This area is for temporary storage during job execution, and for large volumes of data that do not need to be retained for more than a few hours or days. This PFS is fully connected to both the PDAF and the TSCC nodes, providing exceptional data movement and data management throughput to users on either configuration.Backup Policy
- Local Node Temporary Space
Some shared scratch space (about 95GB on
/tmpand about 285GB in/state/partition1) will be available to users on each node. The latter will be managed through the use of aTMPDIRenvironment variable that refers to a job-specific scratch directory. This is local to each node and data will typically not persist beyond the duration of the specific job for which it was allocated. Backup Policy
Each system has different performance characteristics, backup policies, hardware, and data management software. See the Comparison Chart for a summary, or view the Backup page for complete details.