Each ISS Unix username has both a quota and a limit on the amount of permanent disk space it may use. the nquota command shows how much of your quota you are using:
nquota -v
will produce output similar to the following:
Disk quotas for nabc1 (uid 15925):
Filesystem usage quota limit timeleft files quota limit timeleft
/home/ucs/024
541 4096 4505 198 0 0
The first three figures are the significant ones: the user above has 4MB allocated (4096KB), he is permitted to exceed this by 10% (up to 4505KB) before file creation is prevented; but at present he is using only 541KB of his allocation. files refers to the number of files as opposed to the space occupied: the zeros mean that neither limit nor quota is set.
When the disk quota is exceeded, warnings are issued at subsequent logins asking that the disk holdings be reduced to below the quota within a certain time period (timeleft). These warnings should always be heeded; once the disk space in use falls below the quota, they will disappear.
If the warnings are ignored and the time limit is reached, then the system assumes that the disk limit has been reached and no further allocation of disk resources will take place. Existing files will be left as they were but attempts to run applications that need to use extra disk space may fail in undefined ways that depend on the application, and may result in damaged files.
If the quota warnings are ignored and the disk space limit is reached by, for example, creating new files, then no further allocation of disk space will take place.
Postgraduates and staff may apply via e-mail to ISS.Reception@ncl.ac.uk for increased allocations.
Undergraduates may fill out a form (available in major Cluster Rooms and at ISS Reception) to apply for larger quotas. The form must be countersigned by their Supervisor, Tutor or the ISS Help Desk Adviser in a Cluster Room: you need to explain your case for more space. The form has to be handed in at ISS Reception by the user.
All requests for an allocation over 32MB must be made by using the form "Application for Major Resources", which is available at ISS Reception. Instructions for endorsement of the application are on the form.