On 07/22/2009 07:15 AM, dhdurgee@xxxxxxxxxxx wrote:
I have recently purchased an Areca ARC-5020 external eSATA II RAID to connect to my system. This unit supports ICH NCQ and multi-port for multiple volumes. I have connected it to my Intel DG41TY mainboard, which has the Intel 82801GB I/O Controller Hub (ICH7), but I find I am only seeing the first volume and the unit shows NCQ is inactive.
...
So NCQ is detected on the RAID unit but is not enabled and only one of the two volumes is being seen. Am I missing something that needs to be enabled for the driver to support the advanced features? Is my configuration loading the proper driver? If not, how can I load it?
The SATA controller is in the legacy PIIX mode which doesn't support most SATA-specific features. You need to switch it into AHCI mode (should be a BIOS setting for it somewhere) and then the ahci driver will get used instead of ata_piix.
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