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P4 Server Administration Documentation | 2025.2

# Disk space requirements

By default, the P4 Server rejects commands when free space on the filesystems housing the `P4ROOT`, `P4JOURNAL`, `P4LOG`, or `TEMP` fall below 250 mebibytes (262 megabytes). To change this behavior, set the following configurables to the values you want:

Configurable | Default Value | Meaning
--- | --- | ---
`filesys.P4ROOT.min` | 250M | Minimum disk space required on server root filesystem before the server rejects commands.
`filesys.P4JOURNAL.min` | 250M | Minimum disk space required on server journal filesystem before the server rejects commands.
`filesys.P4LOG.min` | 250M | Minimum disk space required on server log filesystem before the server rejects commands.
`filesys.TEMP.min` | 250M | Minimum disk space required for temporary operations before the server rejects commands.
`filesys.depot.min` | 250M | Minimum disk space required for any depot before the server rejects commands. (If there is less than `filesys.depot.min` disk space available for any one depot, commands are rejected for transactions involving all depots.)

You can use the following abbreviations to specify size:

t or `T` for tebibytes
g or `G` for gibibytes
m or `M` for mebibytes
k or `K` for kibibytes

You can also use a percentage to specify the relative amount of free disk space required. For example, setting `filesys.P4JOURNAL.min` to 5% means that at least 5% of total disk space must be free for the server to continue to accept commands.

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