You must follow a two-step process when creating a cache device. You must create a cache device before creating a file system.
Before you begin
You should be familiar with the prerequisites and limitations when adding cache devices.
Steps
Adding a hard drive to the virtual machine
Before adding a cache device in NAS Bridge, you must have an available virtual machine hard drive. If you already have an available hard drive defined to the virtual machine, you do not need to add a new one. Otherwise, you must add a hard drive to the NAS Bridge virtual machine.
Adding a cache device to NAS Bridge
Every file system you create must be associated with a cache device. You should add cache devices to the NAS Bridge node based on file systems that you plan to create.