FastTrak S150 TX2plus works for me on a Dell Precision WorkStation 650 running Scientific Linux 3.0.2 kernel 2.4.21-15.0.3.ELsmp and PROMISE driver version 1.00.0.15 from: http://www.promise.com/support/download/download2_eng.asp?productId=104&category=All&os=4 I have used a additional standard IDE drive to install, compile the module and copy the filesystems to the SATA drives. [root]#cat /proc/scsi/ft3xx/2 PROMISE FastTrak TX4000/376/378/S150 TX Series Linux Driver Version 1.00.0.15 Adapter1 - FastTrak S150 TX2plus Array - Array[1] : 1+0 Stripe (OK) - Array[2] : 1+0 Stripe (OK) Drive - 1 : WDC WD2500JD-75GBB0 IDE1/Master 249999MB IRQ(48) UDMA5 Array[1] 3 : WDC WD2500JD-75GBB0 IDE2/Master 249999MB IRQ(48) UDMA5 Array[2] -- Pierre-Francois Honore <pfhonore@xxxxxx>