topic Re: FC thick Volume containing a LUN in ONTAP Discussions

FC thick Volume containing a LUN

ROBSTEPHENSON — Wed, 04 Jun 2025 23:33:03 GMT

Hi, does anyone know the best practise when creating a LUN in a Volume with no snapshotting: in terms of freespace?

We are using thick provisioning - the customer does not want thin provsioning.

i.e. does there have to be a certain % free space overhead between Volume and LUN?

Re: FC thick Volume containing a LUN

aborzenkov — Wed, 12 Aug 2015 09:49:34 GMT

You do not really need reserved space in usual case on volume level, as long as there is enough space in containing aggregate; but monitoring tools may nag you with "volume free space too low" messages.

Re: FC thick Volume containing a LUN

ROBSTEPHENSON — Wed, 12 Aug 2015 10:04:29 GMT

Aborzenkov, thanks I had a feeling that maybe the case but could find no documentation to prove it.

thanks Rob