Prem,
Depending on what model Exadata you are supporting, compute nodes are equipped with four to eight (4-8) 1/10GbE network ports. One of these are reserved for management during setup/configuration, but the remainder can be used for client access and other uses such as network-attached storage and NFS.
If Exadata compute nodes are to be used as "targets" for virtual databases from Delphix, then the network configuration should be prepared as for any NFS-based network-attached storage, including the 10 GbE setting (instead of 1 GbE), as documented
online here. Additional options for improved performance of network-attached storage include the use of TCP "jumbo frames" as documented
online here.
As far as whether Oracle Support has objections to the use of Exadata compute nodes hosting Delphix virtual databases, Oracle Support note #
1541428.1 (entitled "
Is it acceptable / supported to install additional or 3rd party software on Exadata machines and how to check for conflicts?") should be helpful in clearing that concern.
Hope this helps!
Thanks!