warning interval 1h
<code>
zmlocalconfig -e zmstat_disk_interval=3600 
</code>

Configure disk monitoring thresholds using the '-e' flag for zmlocalconfig.
For example, to set warnings to 90% and critical alerts to 98%:
<code>
zmlocalconfig -e zmdisklog_warn_threshold=90
zmlocalconfig -e zmdisklog_critical_threshold=98
</code>
Restart the Zimbra stat service for the new threshold values to take effect.
<code>
zmstatctl stop
zmstatctl start
</code>