hi, for some reasons I need to keep power consumption at startup as low as possible. since the server is booting from SSD, it is possible to send a "start unit" (or similar) command to all SATA drives early in the init process. as far as I've searchengined, the drives and the SATA controller need to support this feature. but my assumption is that when the drives are not needed at startup (since they would be started by the OS), the controller won't need to support "start unit". what is your experience on this matter? drives in question are WD Green 3TB drives (WDC WD30EZRX-00DC0B0), the controllers at hand are a promise SATA 300 TX4 (don't laugh ;-) ) and a supermicro AOC-SAT2-MV8. tnx. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html