GrantOrchardVMw
Commander
Commander

Adding 2TB RDM Fails

Jump to solution

Hi guys,

I'm attempting to add a 2TB RDM to a VM. The VM resides on a datastore with 8MB blocks, and yet I'm still receiving the error:

"file [vmdk] is larger than the maximum size supported by datastore"

Adding the LUN as a virtual disk presents no problems.

Has anyone come across this problem before?

Thanks,

Grant

Grant http://grantorchard.com
0 Kudos
1 Solution

Accepted Solutions
a_p_
Leadership
Leadership

This can happen if the storage system creates the LUN with "real" 2 TB (2,048 GB). The maximum supported size is 2TB minus 512 Bytes. Try to create the LUN with e.g. 2,047 GB if possible.

André

View solution in original post

0 Kudos
3 Replies
a_p_
Leadership
Leadership

This can happen if the storage system creates the LUN with "real" 2 TB (2,048 GB). The maximum supported size is 2TB minus 512 Bytes. Try to create the LUN with e.g. 2,047 GB if possible.

André

View solution in original post

0 Kudos
GrantOrchardVMw
Commander
Commander

Thanks Andre, seems logical now that you say it.

Will give that a shot.

Grant

Grant http://grantorchard.com
0 Kudos
a_p_
Leadership
Leadership

Just in case:

If you are planning to add the LUN in virtual compatibility mode (e.g. to be able to create snapshots) the size limit is 2,032 GB. see http://kb.vmware.com/kb/1012384

André