The disk space allocated for user account owners on the central servers is designated as quota. Two different quota areas are allocated for METU users, one for their files and one for their e-mail. The procedures to be followed are different when file or e-mail message quotas are full.

For the e-mail messages quota:

Another quota is designated for the disk area where the user keeps the e-mail messages. When 90% of this quota is full, an alert message is sent to the user.

Due to E-mail Quota applications, when quota limits are exceded, incoming e-mails can not be delivered to the receiver and will be returned to the sender. So that, it is important to use e-mail quotas within the limits.

When the e-mail messages quota is exceeded or near the upper limit, measures such as;

• deleting unnecessary and bulky e-mail messages,
• keeping the e-mail message attachments on the hard disk of the computer being used

may be taken and the overload on the quota can be reduced.

For the file quota:

"quota exceeded" message tells you that, at present, you are using all of the disc space that is granted to you for the files on the server systems. Currently, the procedure allows a file quota of 100 MB to students and 250 MB to the personnel.

You can display your disk usage and file quota with command quota

If you draw near to your limit value, you may not be able to access to your account. Remember that Blocks value should not be higher than the Limit value. Otherwise you will receive "quota exceed" message.

When you exceed the quota limits, the first thing you have to do is to find out the files with the largest sizes. You should either zip them or delete the unnecessary ones. Enter the following commands,

• to see the spaces used by each of your file;

  ls -l

  ls -l |more

• to zip your files;

   gzip

• to open the files that you have zipped;
  gunzip
• To change the directory you are in, enter this command;
  cd <directory_name>
• to delete file(s) you can refer to this page