This article shows how to create multiple RAID 0 drives for each disk at once. For example, a controller with 4 disks using this feature you can create 4 groups of devices with one logical drive in it with RAID 0 type.
This is feature is a kind of HBA mode, but on steroids, because it uses the cache of the controller and the hardware controller (Smart Array) optimizations.
All of your disks and the space in them will be available to the OS, but through the Virtual Drive logic of HPE Smart Array. If you check out the article and why you may need JBOD here – Smart Array P440 – enable or disable HBA mode using Smart Storage Administrator it is mainly because of some file systems such as ZFS or Btrfs (even LVM and device mapper devices) have many more features than a hardware controller. So with this feature, you can easily have your disk “exported” to the OS and use the raid or more complex feature of ZFS, Btrfs, LVM, device mapper or another setup, but using the controller optimizations and cache.
Be careful this setup could lead to much bigger risk of data loss on power outrages if write-back cache optimization is enabled. And the more complicated the file system (or device mapper) setup is the more problems it has on power outrages without battery unit back-up in the controller. Always use this feature with a healthy battery in the controller.
How to create multiple RAID 0 Virtual Devices on each disk attached to the controller at once: