Block storage is only accessible once it has been assigned to a cloud server that is located in the same data center. Block storage can only be assigned to a single cloud server. After assigning block storage, you have to adjust the configuration of the data storage medium in your server's operating system. To assign block storage to a server, proceed as follows:
You are in the Infrastructure > Block Storage section.
Select the desired block storage.
Click next to Assigned to:.
Select the server to which you want to assign the block storage.
Click Save Changes.
The block storage is assigned to the server.