PrintUser Directories and Filesystems
We provide different filesystems on our systems, which should be used according to the needs of a particular application. Most of these filesystems are physically connected to a dedicated file server.
Environment | Type | Purpose | Capacity | Quota | Backup |
|---|---|---|---|---|---|
$HOME | NFS CIFS
| Permanent, small data | 15TB | 250MB | yes |
$PC2DATA | NFS CIFS | Group related data | 15TB | 200GB | Yes |
$PC2SW | NFS CIFS | Pre-installed SW | - | - | - |
$PC2WORK | NFS CIFS | Temporary data needed for a certain time | 15TB | None | no |
$TMP_DIR $CCS_TMP_DIR | node local | Temporary, node local data for a single job | 30GB | None | No |
Home Directory ($HOME)
Files in this directory are accessible on all systems.
This filesystem is restrictively quoted regarding file space and number of inodes. This implies that large files should be stored in the $PC2WORK directory. In addition, I/O-intensive applications should not use home directories. For this purpose we provide $PC2WORK.
$HOME is backed up daily.
Data Directory ($PC2DATA)
To allow working group specific collaboration, we can provide a central directory.
Files in this directory are accessible on all systems. The environment variable $PC2DATA automatically points to this directory.
This filesystem is restrictively quoted regarding file space. If you need a higher quota please contact us.
$PC2DATA is backed up daily.
Software Directory ($PC2SW)
This directory contains all pre-installed software for a system.
The environment variable $PC2SW automatically points to this directory.
Working Directory ($PC2WORK)
For each user account we provide a system local directory which should be used for storage of temporary files.
Files in this directory are accessible from all nodes and the frontends of the related system. The environment variable $PC2WORK automatically points to this directory.
This filesystem is restrictively quoted regarding file space. If you need a higher quota please contact us.
There will be no backup service for files in this directory. A maximum lifetime for files stored here is defined. You will be informed by email if the lifetime is exceeded.
Node Local Directories for Jobs ($TMP_DIR, $CCS_TMP_DIR)
When a partition is allocated via CCS, a temporary directory for the job is created on each affected node.
It will be deleted on releasing the partition by CCS.
These node local directories are accessible via ($TMP_DIR or $CCS_TMP_DIR).
The default path is /tmpdir.
