VO Data

Location

$VSC_DATA_VO, $VSC_DATA_VO_USER

Purpose

Storage of datasets or resulting data that must be stored in the cluster to carry out further computational jobs, and that can be shared with co-workers.

Availability: Very high

Accessible from login nodes, compute nodes and from all clusters in VSC.

Capacity: High and expandable

By default, 112.5 GB (soft limit), 125.0 GB (hard limit, 7 days grace time). Can be expanded upon request.

Perfomance: Low

Jobs must always copy any data needed from $VSC_DATA_VO to the scratch before the run and save any results from scratch into $VSC_DATA_VO after the run.

Reliability: Very High

Data is stored in a redundant file system with data replication.

Back-ups:

Back-ups policy depends on each VSC cluster. Check the Tier-2 Storage Infrastructure characteristics of the VSC_DATA storage of your cluster.

VO Scratch

Location

$VSC_SCRATCH_VO, $VSC_SCRATCH_VO_USER

Purpose

Storage of temporary or transient data that can be shared with co-workers.

Availability: High

Accessible from login nodes and compute nodes in the local cluster. Not accessible from other VSC clusters.

Capacity: High and expandable

225 GB (soft limit), 250 GB (hard limit, 7 days grace time). Can be expanded upon request.

Perfomance: High

Preferred location for all data files read or written during the execution of a job. Suitable for all workload types.

Reliability: Medium

Data is stored in a redundant file system, but without replication.

Back-ups:

Back-ups policy depends on each VSC cluster. Check the Tier-2 Storage Infrastructure characteristics of the VSC_SCRATCH storage of your cluster.