From owner-freebsd-hardware@FreeBSD.ORG Tue May 18 17:35:53 2010 Return-Path: Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 09E101065672 for ; Tue, 18 May 2010 17:35:53 +0000 (UTC) (envelope-from dieterbsd@engineer.com) Received: from imr-ma06.mx.aol.com (imr-ma06.mx.aol.com [64.12.78.142]) by mx1.freebsd.org (Postfix) with ESMTP id BDD0C8FC21 for ; Tue, 18 May 2010 17:35:52 +0000 (UTC) Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-ma06.mx.aol.com (8.14.1/8.14.1) with ESMTP id o4IHZoQl017820 for ; Tue, 18 May 2010 13:35:50 -0400 Received: from dieterbsd@engineer.com by imo-da03.mx.aol.com (mail_out_v42.9.) id n.c3d.7b03961d (45280) for ; Tue, 18 May 2010 13:35:47 -0400 (EDT) Received: from smtprly-ma02.mx.aol.com (smtprly-ma02.mx.aol.com [64.12.207.141]) by cia-mc04.mx.aol.com (v129.4) with ESMTP id MAILCIAMC042-5c514bf2cfe788; Tue, 18 May 2010 13:35:46 -0400 Received: from web-mmc-m09 (web-mmc-m09.sim.aol.com [64.12.224.142]) by smtprly-ma02.mx.aol.com (v129.4) with ESMTP id MAILSMTPRLYMA027-5c514bf2cfe788; Tue, 18 May 2010 13:35:35 -0400 To: freebsd-hardware@freebsd.org Content-Transfer-Encoding: quoted-printable Date: Tue, 18 May 2010 13:35:35 -0400 X-MB-Message-Source: WebUI X-AOL-IP: 72.251.72.242 X-MB-Message-Type: User MIME-Version: 1.0 From: dieterbsd@engineer.com Content-Type: text/plain; charset="us-ascii"; format=flowed X-Mailer: Mail.com Webmail 31650-STANDARD Received: from 72.251.72.242 by web-mmc-m09.sysops.aol.com (64.12.224.142) with HTTP (WebMailUI); Tue, 18 May 2010 13:35:35 -0400 Message-Id: <8CCC4C7A8624558-1B6C-796F@web-mmc-m09.sysops.aol.com> X-Spam-Flag: NO X-AOL-SENDER: dieterbsd@engineer.com Subject: Re: SATA port multiplier recommendations? X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 May 2010 17:35:53 -0000 >> Does anyone have recommendations for/against specific SATA port >> multipliers? >> Do they all work well with FreeBSD? > > Afaik port multipliers are unsupported by FreeBSD. You are talking > about controllers? Beginning in 8.0, port multipliers (and NCQ) are supported by ahci(4)=20 and siis(4). >> I was hoping someone would have a port multiplier with a 600 MB/s >> uplink >> by now? > > It is possible with LSI 3081e (mpt). Huh? LSI 3081e appears to be a 300 MB/s 8 port SAS controller that requires at least an 8 lane slot. Not going to fit in my wimpy x1 slots. The mpt(4) man page doesn't appear to mention NCQ.