topic VMware max LUN size in ONTAP Discussions

VMware max LUN size

gavan — Wed, 04 Jun 2025 13:23:35 GMT

Hello,

we have a customer with a FAS8020 storage, ONTAP 9.3 and added recently a DS4246 shelf with 12x 4TB disks.

After creating a single aggregate with all 12 disks, it doesn't let me create a 20 TB LUN with VMware as host type,

cause of "Size out of limit. Maximum size for VMware can be 16TB"

Is this the maximum supported LUN size or am I doing something wrong?

Thanks for any reply,

gavan

naveens17 — Thu, 23 Aug 2018 14:44:35 GMT

That is correct.

Always please check hwu.netapp.com you will get lots of info regariding the limations.

so based on your model & OS type

Max lun size is 15.26 TiB

Thanks

gavan — Wed, 29 Aug 2018 11:37:20 GMT

Thank you naveens!