File Systems¶
On Mistral, two global Lustre file systems with a total storage capacity of 54 PetaBytes are available. Users have access to three different storage spaces: HOME, WORK, and SCRATCH. Each storage space has a specific purpose as described below:
HOME is the file system where users’ sessions start upon login to Mistral. It is backed up and should be used to store shell setup files, source codes, scripts, and important files.
WORK is a project space available through the allocations process and shared between all users of a project. It provides disk space for large amounts of data, but it is not backed up. It can be used e.g. for writing raw model output and processing of data that is accessible to all project members.
SCRATCH is provided for temporary storage and processing of large data. To prevent the file system from overflowing, old data is automatically deleted. The granted retention period is 14 days.
The Lustre file system is available on all nodes (login and compute), so you can use them during interactive sessions and in batch jobs. The table below provides further details on different storage spaces.
File system |
HOME |
WORK |
SCRATCH |
|---|---|---|---|
Path |
/home/[a,b,g,k,m,u]/<userid> |
/work/<projectid> |
/scratch/[a,b,g,k,m,u]/<userid> |
Environment variable |
$HOME |
||
Description |
|
|
|
Quota |
24 GB |
according to annual project allocation |
15 TB |
Backup |
YES please contact User Support to restore files deleted by mistake |
NO |
NO |
Automatic data deletion |
NO |
NO |
YES |
Data life time |
until user account deletion |
1 month after project expiration |
14 days since the last file access |