Recently upgraded with a DAS w/ SAS2-826EL1 backplane & LSI 9207-8e HBA to allow for TRIM support on SSDs.  I currently have an 850 EVO 500gb (sdb) as my cache drive on motherboard SATA port which is working 100% & have an 850 EVO 250gb (sdl) on the DAS but have not been able to get TRIM working.  I formatted the 250gb ext4 after doing some reading under the impression that this filesystem allows for TRIM, but I would like to move my cache drive to 6gb/s HBA as opposed to the 3gb/s my mo