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
You add a hard drive to the virtual machine for two reasons: 1) Before adding a cache device to the NAS Bridge, you must have an available virtual machine hard drive. 2) If you are upgrading the NAS Bridge, you must add a hard drive to be used as a system drive.
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 based on file systems that you plan to create.