zmcontrol.status.xp30T: No space left on device mta

[snowymoountain]

sh: /opt/zimbra/data/tmp/zmcontrol.status.xp30T: No space left on device
service webapp Stopped
sh: /opt/zimbra/data/tmp/zmcontrol.status.xp30T: No space left on device
snmp Stopped
sh: /opt/zimbra/data/tmp/zmcontrol.status.xp30T: No space left on device
spell Stopped
sh: /opt/zimbra/data/tmp/zmcontrol.status.xp30T: No space left on device
stats Stopped
sh: /opt/zimbra/data/tmp/zmcontrol.status.xp30T: No space left on device
zimbra webapp Stopped
sh: /opt/zimbra/data/tmp/zmcontrol.status.xp30T: No space left on device
zimbraAdmin webapp Stopped
sh: /opt/zimbra/data/tmp/zmcontrol.status.xp30T: No space left on device
zimlet webapp Stopped
sh: /opt/zimbra/data/tmp/zmcontrol.status.xp30T: No space left on device
zmconfigd Stopped

I deleted some bits not required however...... there is a lot of space...

is this error for the Storage volume or the system volume ?

Storage volume is 91% full system volume is 67.8 / 84 GB

If storage I can move a lot of stuff to a secondary volume.