Hi All, So, on further investigation/experimentation, it seems that each individual iSCSI Storage Domain is being created (there is visual evidence from watching the Ceph Monitoring Portal, and LVM volumes are being created on the selected LUN/Host) but it *appears* that, for some reason, vdsm is "timing out" (or, at least, that's my interpretation of what is happening) and thus resetting the Storage Domains back to the pre-creation state. So it appears that the fact that there is a previous LUN on the Ceph Pool/Disk is *not* my underlying issue. So my question is: How would it be if I adjusted the following settings (via engine-config), which I obtained from this thread: https://lists.ovirt.org/archives/list/users@ovirt.org/thread/LRZLORSREVEYXJH... - TimeoutToResetVdsInSeconds - VDSAttemptsToResetCount - VdsRecoveryTimeoutInMintues - VdsRefreshRate - vdsTimeout Anyone have any opinions (on this list and/or other settings)? Cheers Dulux-Oz