New Hard disk size is limited to 15.81 TB

[CUNYIT17]

Hi,

We are running Vcenter 6.0 on EXSi 6.0 Host, We are using NetApp to manage the data stores. I have created a datastore volume of 32TB and would like to assign it to one of the VMs, when i go to Vcenter webclient or even to the EXSi host which has the VM to add a Hard disk on that VM through VM settings, it is not letting me create a disk larger than 15.81 TB. can someone please provide some guidance.

Thanks

[a_p_]

Welcome to the Community,

this sounds as if you are using NAS/NFS storage, and the storage system only supports file sizes up to ~16TB. Please check with the Netapp documentation.

André

[CUNYIT17]

Hi Andre,

I was able to create a NFS storage Volume of 37TB, so there is no limitations there, it is just i cant create a hard disk larger than 16TB on the VM that i want to assign this data storage volume to.

Thanks

[a_p_]

That's what I thought. It's actually a limitation of your Netapp storage system, which limits file sizes to 16TB, and a virtual disk is a .vmdk file on the file system.

For storage limits see e.g. ONTAP 9 Documentation Center

André

[CUNYIT17]

Hi,

This is really confusing, how is storage system limiting the size of the disk on a VM? according to the VM configuration maximum guide (attached) i should be able to create a Virtual disk size up to 62 TB.

Please clarify.

Thanks

[a_p_]

Although VMware supports virtual disks of up to 62GB, the limiting factor is the storage on which the VM's files are stored, i.e. which doesn't allow to create a .vmdk file (which represents the virtual disk) in that size.

It's basically like a driving a car. Even with a Porsche you are bound to speed limits, if you drive in a city, aren't you?

André