Date: Mon, 14 Dec 2009 12:20:21 +0100 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: "K.R." <spambox@haruhiism.net> Cc: Doug Barton <dougb@FreeBSD.org>, Ivan Voras <ivoras@freebsd.org>, freebsd-current@freebsd.org Subject: Re: AHCI/ATA_CAM for dummies? Message-ID: <86pr6hn6oa.fsf@ds4.des.no> In-Reply-To: <4B25D425.4000308@haruhiism.net> (K. R.'s message of "Mon, 14 Dec 2009 08:59:01 %2B0300") References: <4B241509.8060906@FreeBSD.org> <hg19vu$22q$1@ger.gmane.org> <4B25A28A.1040305@FreeBSD.org> <4B25D425.4000308@haruhiism.net>
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"K.R." <spambox@haruhiism.net> writes: > From what I know, SATA 1 does not support NCQ. It's a feature of SATA > 2. a) There is no such thing as SATA 1 or 2; there is only SATA, although marketroids sometimes incorrectly refer to drives that support 3 Gbps transfer speed as SATA II drives. b) SATA has supported NCQ from the very beginning. In fact, command queueing already existed in PATA at the time SATA was finalized. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
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