Virtual Machines (VMs) generally do not have a local storage, but use storage provided by CEPH over a 50GbE network.
Increasing or decreasing the storage of a VM is generally possible, but sometimes the time and effort does not justify the result. Therefore, it is important to make a good guess when creating the VM or requesting the resources for a VM.
Besides, HSUper’s 1PB BeeGFS file system may be mounted using SSHFS utilizing the 50GbE network connection of the ISCC.