topic Default lun settings in ONTAP Discussions

Default lun settings

arnoldromeijn — Wed, 04 Jun 2025 15:17:32 GMT

Is there an option to change the defaults on every new lun created?

I want to have the space-allocation option set (on every lun created).

Re: Default lun settings

J-L-B — Wed, 29 Mar 2017 03:17:22 GMT

Yes but you have to offline the lun to change that setting. It is disruptive.

https://library.netapp.com/ecmdocs/ECMP1196784/html/GUID-6AD84908-041A-497D-95A7-BB6AFDD1B282.html

Check your hosts for compatibility with the space-allocation ability. Don't enable if it's not compatible.

Re: Default lun settings

arnoldromeijn — Mon, 17 Apr 2017 19:43:09 GMT

Yes, that is on a single lun. I am searching for a method to change this setting for every new lun.

I wrote a blog post about the feature: http://vdinges.romeijn.nu/2017/03/space-reclamation-with-vsphere-65-and.html

Re: Default lun settings

mbeattie — Tue, 18 Apr 2017 06:24:24 GMT

Hi,

The default 'space-allocation' setting for a LUN is disabled. I don't think there is any option within ONTAP to change this behaviour however you might consider automating the provisioning process within your environment. This would ensure any LUNs created are configured with 'space-allocation' attribute as enabled before you rescan your hyper-visor host to add the datastore.

/Matt