HPE Smart array controller with both cache and battery should be installed or is a necessity for array expansion ad extension of the logical drive. Both battery-backed write cache BBWC and flash-backed write cache FBWC are supported by HPE smart controller. As a first step from the start storage administrator confirms that the server is installed with both cache and battery.
Follow the path
Select SSA > select logical devices > array “x” > manage data drives
Select the drive you want to add > add drive > ok
Wait till the process is completed
Select logical devices > logical drive “x” > extend logical drive
Then in windows open the disk management > right click on the partition to an extent (blue)
Extra space will be visible next to it in black color.