HCC is supported and indeed is a preferred option in ZFS on ODA. (Some rules apply.) Since ZFS implements copy-on-write, HCC is a distinct optimization. Some info at https://blogs.oracle.com/eSTEP/entry/oda_announcing_oda_external_storage HTH /Hans On 26/08/2012 1:20 PM, Kamus wrote: > I have no idea about ZFS storage, AFAIK, HCC is only available in Exadata, > not in ODA. -- //www.freelists.org/webpage/oracle-l