Home > Storage > PowerVault > Guides > Dell PowerVault ME5 Series: VMware Horizon VDI Best Practices > Data encryption
Many applications have data encryption requirements on data at rest.
Full Disk Encryption (FDE) is a PowerVault feature that secures all the user data on a storage system. FDE is a method by which you can secure the data residing on the disks. It uses self-encrypting drives (SED), which are also referred to as FDE-capable disks. When secured and removed from a secured system, FDE-capable disks are unreadable by other systems. FDE is supported and recommended for VDI environments.