This is a warning message in the UI for Administrators indicating that there is a potential issue with the available space on the Transfer Directory.
VMware Cloud Director UI shows the following warning:
VMware Cloud Director 10.x
Transfer Directory on VCD (/opt/vmware/vcloud-director/data/transfer) has less available space.
Confirm that there is available space in the Transfer Directory using the following command:
cd opt/vmware/vcloud-director/data/transfer
df -h
If no space is available, either the NFS size will need to be increased or old files should be cleared from the transfer directory. Please open a case with Broadcom Technical support for further information.