Skip to main content

Ephemeral Storage


Ephemeral storage is a temporary drive that is attached to a virtual machine (VM) during its runtime for storage of the active workload. Unlike persistent disks, which retain data during hibernation or deletion of a VM, ephemeral disks are only used for temporary storage. To prevent data loss, back up the data from the ephemeral disk to one or more Shared Storage Volumes (SSVs) before modifying the state of your virtual machines. See the instructions below:

How to save your workload data to an SSV

VM data can be stored by utilizing Shared Storage volumes (SSVs).

  1. Create a volume either through Hyperstack, or by using the Infrahub API's "Create volume" endpoint.

  2. Attach and mount the volume to your virtual machine, achieved either through Hyperstack or by using the "Attach volumes to virtual machine" Infrahub API endpoint.

  3. Once the volume is attached to your virtual machine, you can proceed to move or copy the data from the ephemeral disk to the shared storage volume, saving your data.

  4. With the data now saved on the volume, you can modify the state of the virtual machine without the risk of data loss.


The ephemeral disk on Linux VMs will be identified as /dev/vdb, while on Windows VMs, it will appear as the E: drive. To make your ephemeral disk usable, you'll need to format and mount it within your VM. The ephemeral disk is mounted by default under /ephemeral.


Proportional to the number of GPUs. To see the ephemeral disk capacity of specific GPU flavors click here.


Available in all regions.

Back to top