ASM volume limitations

Hi,

I currently have Dell Equallogic Tech Support stumped with an issue with ASM.

I have a virtual Windows file server with 10 volumes attached directly to the OS.

For some reason, ASM only shows 8 of them in the Volumes list so I can't set up snapshot or replication tasks against the missing two.
All 10 volumes appear and can be accessed with no problem on the server and in the MPIO areas of ASM.

Does anyone out there have more than 10 volumes attached to a server and can ASM see them all?

Anyone had this kind of problem before?

I think the problem occurred after upgrading to 4.x releases. We have even upgraded to 4.6 EPA.

Cheers

Damien