Date: Fri, 19 Nov 2004 10:47:30 +0100 From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@DeepCore.dk> To: "Wilkinson, Alex" <alex.wilkinson@dsto.defence.gov.au> Cc: freebsd-current@freebsd.org Subject: Re: sil3112a SATA Controller, current status Message-ID: <419DC132.2000707@DeepCore.dk> In-Reply-To: <20041119040417.GC768@squash.dsto.defence.gov.au> References: <f8646080041118045410a4629c@mail.gmail.com> <419CEFB9.7060604@DeepCore.dk> <20041119040417.GC768@squash.dsto.defence.gov.au>
index | next in thread | previous in thread | raw e-mail
Wilkinson, Alex wrote: > Soren, I know that TCQ stands for 'Tagged Command Queing', > but how about NCQ ? NCQ = Native Command Queueing, semilar to TCQ but with different commands and sematics, still limitted to 32 tags. IIRC there is no "bus release" cycle in NCQ as SATA only has one device pr chain (well, as long as you dont use port multipliers that is). > And how does one find out if their SATA disk is really using a > PATA-SATA converter chip ? smartmon ? Either by asking then vendor or by visual inspection, you cannot tell pr software, at least not in any reliable way AFAIK. -- -Sørenhelp
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?419DC132.2000707>