Got this error while trying to upload some ISO’s to a datastore ISO folder via a VirtualCenter client.
While looking for causes I found these possibilities:
- Not enough space in the datastore
- Port 901/902 not open between the VI Client to the source of the file (and/or VC Server, could not find if that is also a factor)
- DNS configuration for the host servers
As a possible solution I also found that restarting the VC Server service could help.
In this particular case it turned out that DNS was not configured for the host servers so adding the servers to the hosts file of the machine running the VI Client did the trick.