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38.2. Disk Full Failure

The most important disk monitoring task of a database administrator is to make sure the disk doesn't grow full. A filled data disk will not result in data corruption, but it may well prevent useful activity from occurring. If the disk holding the WAL files grows full, database server panic and consequent shutdown may occur.

If you cannot free up additional space on the disk by deleting other things, you can move some of the database files to other file systems by making use of tablespaces. See Section 32.6 for more information about that.

Tip: Some file systems perform badly when they are almost full, so do not wait until the disk is completely full to take action.

 
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