From owner-freebsd-hardware@FreeBSD.ORG Mon Sep 24 07:43:53 2012 Return-Path: Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 25B77106566C for ; Mon, 24 Sep 2012 07:43:53 +0000 (UTC) (envelope-from mattblists@icritical.com) Received: from mail3.icritical.com (mail3.icritical.com [212.57.248.143]) by mx1.freebsd.org (Postfix) with SMTP id 6355C8FC15 for ; Mon, 24 Sep 2012 07:43:52 +0000 (UTC) Received: (qmail 12767 invoked from network); 24 Sep 2012 07:43:44 -0000 Received: from localhost (127.0.0.1) by mail3.icritical.com with SMTP; 24 Sep 2012 07:43:44 -0000 Received: (qmail 12750 invoked by uid 599); 24 Sep 2012 07:43:44 -0000 Received: from unknown (HELO PDC002.icritical.int) (212.57.254.146) by mail3.icritical.com (qpsmtpd/0.28) with ESMTP; Mon, 24 Sep 2012 08:43:44 +0100 Message-ID: <50600F2E.2030808@icritical.com> Date: Mon, 24 Sep 2012 08:43:42 +0100 From: Matt Burke User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:15.0) Gecko/20120906 Thunderbird/15.0 MIME-Version: 1.0 To: Theodor-Iulian Ciobanu References: <20120922113927.00007ff3@unknown> In-Reply-To: <20120922113927.00007ff3@unknown> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-TLS-Incoming: YES X-Virus-Scanned: by iCritical at mail3.icritical.com Cc: "Pepe \(Jose\) Amengual" , freebsd-hardware Subject: Re: Which one has better support for FreeBSD , LSI or Areca ? with multiport support 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: Mon, 24 Sep 2012 07:43:53 -0000 On 09/22/12 09:39, Theodor-Iulian Ciobanu wrote: > After moving away from Windows I also moved away from Areca, as I found > poor support for it, although the drivers are official: When I tried the Areca 1320 HBA earlier this year, I found that using the CLI caused the FreeBSD 9 driver to panic the machine. Submitted a support request and 2 days later I had an email with a new driver build attached, which was soon after added to their website. Their support is actually pretty good! > - no hotplug (new discs were not picked up automatically, I had to > reboot) Works perfectly on the 1320. > - low transfer speeds (I found it bottlenecking at ~200MB/s, with > Ultrastar 3TB discs being detected as SATA1) Attached to an Areca 1320, 16x disks (7200rpm SAS, max speed 140MB/s) are able to deliver >2GB/s combined write speed [1]. SATA support on these is limited however to SATA2 (220MB/sec per disk). The only SATA disks I use are SSDs (for ZFS ZIL/L2ARC), so I'm more bothered about latency. When latency is measured via DTrace on a busy machine, there is no difference between the same make/model of SSD attached to the Areca card or an onboard SATA3 AHCI controller [2]. [1] Running 16 parallel instances of 'dd if=/dev/zero bs=1M of=/dev/da..'. gstripe was massively slower. [2] ahci0: port 0x9070-0x9077,0x9060-0x9063,0x9050-0x9057,0x9040-0x9043,0x9020-0x903f mem 0xdfc22000-0xdfc227ff irq 19 at device 31.2 on pci0 ahci0: AHCI v1.30 with 6 6Gbps ports, Port Multiplier not supported arcsas1: