available space for zvol

lavicky

Cadet
Joined
Dec 9, 2014
Messages
2
Hi,
I can't understand 80% limit of available space for zvol. We use FreeNAS-11.1-RELEASE as iSCSI target for VMWare and Veeam. I was trying to increase iSCSI_VMware zvol but I gave "It is not recommended to use more than 80% of your available space for your zvol" message.
Screenshot_20200612_105237.png


On the other hand I'm able to create the very new zvol of the same size I tried to add.
Screenshot_20200612_105340.png


What exactly does "available space for zvol" mean?
 
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