Storage and costs

Summary for Curnagl cluster
The costs page is available here (UNIL login is required).



Storage
Use it for
Copies
Cost (CHF/TB/year)
Accessible from compute nodes



/scratch
 

Temporary files of running jobs that need large amounts of data
1, may be deleted at any time
Free

Yes



/work
Data used in current computations
1 (not safe)
See "U1 cost" for "GPFS (HPC - normal)" in the costs page.
Yes


/nas D2c
Important results of ongoing projects
2 (safe)
Add "U1 cost" for "Stockage copie primaire (Isilon)" and "Stockage 2ème copie (Isilon)" in the costs page.
No


/nas D1c
Reloadable datasets of ongoing projects
1
See "U1 cost" for "Stockage copie primaire (Isilon)" in the costs page.
No


LTS (tape)
Data of closed projects, archive
2 (safe)
Free

No




Each PI has 1 TB of free /nas space, shared across all their open projects: 500 GB in D2c or 1 TB in D1c.
Summary for Urblauna Cluster



Storage
Use it for
Copies
Cost (CHF/TB/year)
Accessible from compute nodes



/scratch
 

Temporary files of running jobs that need large amounts of data
1, may be deleted at any time
Free

Yes



/data
Data used in current computations
1 (not safe)
See "U1 cost" for "GPFS (HPC - normal)" in the costs page.
Yes


/work

Software installed from a machine connected to the internet (read-only from Urblauna)

1 (not safe)
See "U1 cost" for "GPFS (HPC - sensible)" in the costs page.
Yes


/archive (tape)
Data of closed projects or not accessed regularly, archive
2 (safe)
See "U1 cost" for "Archivage (sensible)"

No




Good practices

Move your results out of /scratch and /work (or /data for Urblauna) as soon as your computations are finished.
Do not copy large read-only datasets to /scratch: /work (or /data for Urblauna) performance is more than sufficient for reading them.
Using the 
touch command to prevent files from being purged from /scratch is strictly forbidden.
Move data of closed projects:

to LTS to free up /nas space for non-sensitive data,
to /archive for sensitive data.



Quota increase
To increase a /nas or /work quota, email helpdesk@unil.ch with "DCSR quota increase" in the subject line and the exact amount required. As this may increase quarterly invoices, we need the PI's approval before applying the change.
More information

How to make an LTS request
Detailed information about storage file systems in Curnagl
Detailed information about storage file systems in Urblauna