Skip to content

File Systems

File Space

Global file space on ACES is available on all compute and login nodes. It is organized into the file systems shown in the table below. Access to the allocated file space is through the indicated directories that are setup automatically for every user.

File System Directory Environment Variable Storage Hardware File Space Quota File Counts Quota Comments
Home /home/USERID $HOME DDN 10 GB 10000 Upon login, you will be situated in /home/$USER. The use of this area is for small-to-modest amounts of processing: small software, scripts, compiling, editing. Its space and file count limits are not extensible.
Scratch /scratch/user/USERID $SCRATCH DDN 1 TB 250000 This is high performance storage intended to temporarily hold larger files and is for on-going processing that uses them. It is NOT backed up nor is it intended as long-term storage. Please delete or move out of these area any files that are not frequently used.
Project /scratch/group/PROJECTID $PROJECT DDN 5 TB 500000 This high performance storage is shared among members of this particular group. It is not purged while the allocation is active. Data will be removed 90 days after allocation expiration.

Each ACCESS allocation receives its own 5TB shared group directory. Members of the ACCESS allocation are automatically added to the group project space once the user is added to the ACCESS allocation. Likewise, when a member is removed from the ACCESS allocation, the user will be automatically removed from the group project space.

The quota for that directory can be increased with PI justification. Submit a request for increase using the "Request Quota Increase" button in the ACES portal or by contacting us.

Quotas & File Use

A user can run the showquota command to display file usage on ACES.

[username@aces ~]$ showquota

Your current disk quotas are:
Disk                  Disk Usage      Limit   File Usage      Limit
/home/username              1.4G      10.0G         3661      10000
/scratch/user/username    117.6G       1.0T        24226     250000
/scratch/group/projectid  510.5G       5.0T       128523     500000