@olivierlambert Not the case for me. my ISO SR is a local LVM, and my VM SR is a locally mounted HBA... IE, all my VM's can be shut off, and I can still access all my VMDK/VHDs.
The only NFS Storage the XCP-ng is using is for my Backup Schedule, which was not running at that time.
As my edit says though, it worked fine afterwards, and i still havent seen an issues in the last few days since. It was a one-off that I can't reproduce