Disk quotas #
Individual disk usage quotas are enforced on /home/users/
and /home/data
. You can use the quota
command to query your current usage and quota statistics:
quota --human-readable --show-mntpoint --hide-device
The output will look like this:
Disk quotas for user danilov (uid 1002):
Filesystem space quota limit grace files quota limit grace
/home/users 101275M 100G 110G 382k 1000k 1100k
/home/data 22634M 1024G 1024G 33435 10000k 10000k
There are two types of limits:
- the total size of used disk space (
space
); - the total number of files (
files
).
The command quota
will show you the current usage for space
/files
, as well as the value of quota
and the maximum limit
. Zeros in both quota
and limit
fields are used as unlimited values. The operating system will not allow the user to exceed the limit
value, returning the error Disk quota exceeded
. However, the user may exceed the quota
value for a limited time (7 days). In this case the remaining time will be displayed in the field grace
.
Disk quotas for user danilov (uid 1002):
Filesystem space quota limit grace files quota limit grace
/home/users 101G* 100G 110G 6days 382k 1000k 1100k
/home/data 22634M 1024G 1024G 33435 10000k 10000k
Add the following lines to your ~/.bashrc
file in order to check quota limits at login time:
# check only local quotas and print in human-readable format if exceeded
command -v quota >/dev/null 2>&1 && { quota -lq --show-mntpoint --hide-device 2>/dev/null || quota -ls --show-mntpoint --hide-device; }
Disk /home/users
#
Starting from April, 2022 the following quotas are enforced in user home directories under /home/users
:
- maximum file size – 100 GB,
- maximum number of files – 1 million.
Individual quotas are defined for users with usage exceeding 50 GB or 500k files in March, 2022: extra 50 GB and 500k files are added to the actual usage. Individual quotas are subject to gradual decrease over time.
Disk /home/data
#
The following quotas are enforced in directories under /home/data
:
- maximum file size – 1 TB,
- maximum number of files – 10 million.
Disk /home/events
#
Individual quotas are used for temporary events. Group quotas could be used as well, check quota -g
.
Unlimited disks #
Starting from April, 2022 the following disks are available for users:
Path | Size | Availability | Notes |
---|---|---|---|
/home/data4t |
4 TB | all nodes | transferred from /data4t , will be removed in February, 2025 |
/home/data14t |
14 TB | all nodes | transferred from /data14t , will be removed in February, 2025 |
/home/biomath |
30 TB | all nodes | transferred from /data90t/biomath , data for biomathematics research groups |
/home/geosci |
280 TB | all nodes | transferred from /data90t/geosci , data for geoscience research groups |