From owner-freebsd-stable@FreeBSD.ORG Mon Feb 15 06:33:09 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 90160106568B for ; Mon, 15 Feb 2010 06:33:09 +0000 (UTC) (envelope-from mavbsd@gmail.com) Received: from mail-fx0-f228.google.com (mail-fx0-f228.google.com [209.85.220.228]) by mx1.freebsd.org (Postfix) with ESMTP id 17B418FC0C for ; Mon, 15 Feb 2010 06:33:08 +0000 (UTC) Received: by fxm28 with SMTP id 28so256820fxm.31 for ; Sun, 14 Feb 2010 22:33:08 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:message-id:date:from :user-agent:mime-version:to:cc:subject:references:in-reply-to :x-enigmail-version:content-type:content-transfer-encoding; bh=PVYGsshPuTL1zPOBsjCFjFZpuwltHRdK49UvgQOKY/g=; b=PqYt8F4Id1ObC1yQ4OSd4AfzkWJQGf+gIT5f5t9pg7/saLEFyx4QatmAssOun2k1vp 4dDrDNNexG3Aok0dciw4hto+6cWPOSm0gtAnc+cgkSk0xm0hqiDk4tThnjgYUzMOfJbb W8NSWT9r06nJx68crpwhO4Ld+nhi2l25eQcGA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=Yhe0j13FwB8cJEiQDiKO+r9r4YOAs4jDfK3+9zu4BByFZktxs2TpDUH3uCSbx8VNQ0 l8krNRTuDto+wn2hNK0mfpg6MGKAh4TDvV5wNhd0IR9D0UEpk+Jw/4QYEXanDzUbioXH G6q2XdPJzzzNetRFNYEcjk7OEqEnYDfmuB2dg= Received: by 10.223.62.78 with SMTP id w14mr3270378fah.82.1266215587933; Sun, 14 Feb 2010 22:33:07 -0800 (PST) Received: from mavbook.mavhome.dp.ua (pc.mavhome.dp.ua [212.86.226.226]) by mx.google.com with ESMTPS id 13sm2813440fxm.9.2010.02.14.22.33.06 (version=SSLv3 cipher=RC4-MD5); Sun, 14 Feb 2010 22:33:07 -0800 (PST) Sender: Alexander Motin Message-ID: <4B78EAA0.40403@FreeBSD.org> Date: Mon, 15 Feb 2010 08:33:04 +0200 From: Alexander Motin User-Agent: Thunderbird 2.0.0.23 (X11/20091212) MIME-Version: 1.0 To: Dan Langille References: <1265617382.00216602.1265605802@10.7.7.3> <1265707385.00217197.1265696404@10.7.7.3> <1265728980.00217271.1265715603@10.7.7.3> <1265750583.00217397.1265739002@10.7.7.3> <1265754184.00217418.1265743204@10.7.7.3> <1265756530.00217435.1265745602@10.7.7.3> <1265790181.00217606.1265778601@10.7.7.3> <1265842691.00217889.1265831404@10.7.7.3> <4B78382E.8080905@FreeBSD.org> <4B78763E.5080105@langille.org> In-Reply-To: <4B78763E.5080105@langille.org> X-Enigmail-Version: 0.96.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: FreeBSD Stable , Steve Polyack Subject: Re: hardware for home use large storage X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Feb 2010 06:33:09 -0000 Dan Langille wrote: > Alexander Motin wrote: >> Steve Polyack wrote: >>> On 2/10/2010 12:02 AM, Dan Langille wrote: >>>> Don't use a port multiplier and this goes away. I was hoping to avoid >>>> a PM and using something like the Syba PCI Express SATA II 4 x Ports >>>> RAID Controller seems to be the best solution so far. >>>> >>>> http://www.amazon.com/Syba-Express-Ports-Controller-SY-PEX40008/dp/B002R0DZWQ/ref=sr_1_22?ie=UTF8&s=electronics&qid=1258452902&sr=1-22 >>>> >>> Dan, I can personally vouch for these cards under FreeBSD. We have 3 of >>> them in one system, with almost every port connected to a port >>> multiplier (SiI5xxx PMs). Using the siis(4) driver on 8.0-RELEASE >>> provides very good performance, and supports both NCQ and FIS-based >>> switching (an essential for decent port-multiplier performance). >>> >>> One thing to consider, however, is that the card is only single-lane >>> PCI-Express. The bandwidth available is only 2.5Gb/s (~312MB/sec, >>> slightly less than that of the SATA-2 link spec), so if you have 4 >>> high-performance drives connected, you may hit a bottleneck at the >>> bus. I'd be particularly interested if anyone can find any similar >>> Silicon Image SATA controllers with a PCI-E 4x or 8x interface ;) >> >> Here is SiI3124 based card with built-in PCIe x8 bridge: >> http://www.addonics.com/products/host_controller/adsa3gpx8-4em.asp >> >> It is not so cheap, but with 12 disks connected via 4 Port Multipliers >> it can give up to 1GB/s (4x250MB/s) of bandwidth. >> >> Cheaper PCIe x1 version mentioned above gave me up to 200MB/s, that is >> maximum of what I've seen from PCIe 1.0 x1 controllers. Looking on NCQ >> and FBS support it can be enough for many real-world applications, that >> don't need so high linear speeds, but have many concurrent I/Os. > > Is that the URL you meant to post? "4 Port eSATA PCI-E 8x Controller > for Mac Pro". I'd rather use internal connections. Not exactly what I meant, as it is a Mac version, but yes. At least such controllers exist. May be they also could be found with internal SATA. -- Alexander Motin