When using software solution like software RAID or LVM (and the controller is in JBOD) you can move the disks with no problem to other hardware without the hardware controller. When you create virtual drives in hardware mode, you must use only this type of proprietary controller or some compatible of the same company. more platform independent when using software RAID / device mapper devices.not using the cache (RAM) of the controller, so it may lower the risk of data loss caused by power outages.You may have more features in the created logical device (or file system) – caching or managing the disks and so on JBOD mode -to use the disks in a sophisticated file system like ZFS, brtfs and more (or LVM, device mapper logical devices).There are various scenarios why you may want to enable HBA such as: As a continuation of our series about HPE Smart Array P440 controller here how you can enable HBA mode of your controller.
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