The two options selected by you are optional, while the bottom one is mandatory ("Use 512 Byte emulation" - not selected in your case). Enable it and try the same action.
create vdo IS OK! THANKS!
But there is another problem. After the VDO device is mounted, format the device and mount it. Create a disk through the management tool, but an error is reported.
Do you have a complete documentation manual for vSphere? There is no introduction and instructions for this version.
VDO related documentation is not yet available, as there are some UI glitches related to VDO operation, particularly from-time-to-time issues with 512b block size emulation at the stage of VDO device creation. Documentation related to feature is going to be published once a fix is available. Feel free to check our release notes at https://www.starwindsoftware.com/releas ... re-vsphere in the future.