Am I dreaming, or was it formerly possible to view 20 SATA hard drives through 4 SATA port multipliers connected to 1 SAS board? If it used to work, why did it stop working? Is this the reason: [isci PATCH v2 15/18] libsas: drop sata port multiplier infrastructure http://www.spinics.net/lists/linux-scsi/msg57986.html Is there a possibility that it might start working again, or start working for the first time? Re: [PATCH 0/3] libsas: add support for port multiplier https://lkml.org/lkml/2014/5/2/350 CONFIG_SCSI_SAS_LIBSAS=m CONFIG_SCSI_SAS_HOST_SMP=y CONFIG_SCSI_MVSAS=m CONFIG_SCSI_MVSAS_DEBUG=y CONFIG_SCSI_MVSAS_TASKLET=y -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html