Stackers, I tried to create a new VM using the driver VMwareVCDriver, but I found it's very slow when I try to create a new VM, for example, 7GB Windows Image spent 3 hours. Then I tried to use curl to upload a iso to vcenter directly. curl -H "Expect:" -v --insecure --upload-file windows2012_server_cn_x64.iso " https://administrator:root123.@200.21.0.99/folder/iso/windows2012_server_cn_x64.iso?dcPath=dataCenter&dsName=datastore2 " The average speed is 0.8 MB/s. Finally, I tried to use vSpere web client to upload it, it's only 250 KB/s. I am not sure if there any special configurations for web interface for vcenter. Please help. Best Regards -- Ray -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20140108/e98c4dbb/attachment.html>