From owner-freebsd-hardware@freebsd.org Mon Aug 14 06:21:54 2017 Return-Path: Delivered-To: freebsd-hardware@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 783D1DD7EBB for ; Mon, 14 Aug 2017 06:21:54 +0000 (UTC) (envelope-from xxjack12xx@gmail.com) Received: from mail-wm0-x235.google.com (mail-wm0-x235.google.com [IPv6:2a00:1450:400c:c09::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 0FB7D6F899 for ; Mon, 14 Aug 2017 06:21:54 +0000 (UTC) (envelope-from xxjack12xx@gmail.com) Received: by mail-wm0-x235.google.com with SMTP id f15so35547293wmg.1 for ; Sun, 13 Aug 2017 23:21:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=TV+FFSEuiTI8xaxSsuN6Nochvq9yQGG7WMdjDU+mTVA=; b=LQ+vGEVxDuyxHrISvRhhMjknRyI8S+BJZWJRX/YyfW9BEcucjUgbYFD6YAQ4zn8Nij cOSzFC8ryYre0bbSfbc9JqHJQJPyEIG7l9G/bvXgcU45/1fw0k7aH2jK+cSywqR78Ze4 jhGz3zBikhUO3Lfgym9Mg5RKYFGRzJ9sjVVVNKVJQLkjvlJIeryf0RtLr++qSMVoe1Da ZBSEb3GgjxGS8FPDkpcFhD0gjaKRsX5BU2NwF/OLv39e5mk6DBRJpRxiin9CpKeRJMpC hBrIW1qno0LabH2//dVd5Xd/QeK0INvBKWxxv7BqIxXieP6aKOlCw3B2/Vva4kK8KfhO 3uxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=TV+FFSEuiTI8xaxSsuN6Nochvq9yQGG7WMdjDU+mTVA=; b=laXpWwxBNDvODwPvubZmUbBwg7kaWb8MEKlhbtY+22o8wdUbWAOtjAs5U0Y4nmII/g LdqG/fI2D2/DfnYnBxWJJtPhG1bTAE8xoalFFEKrY1V/oWliVw56SAHHQoNATKA5U8cm GlRhXzeHWryhj5OAAmR7YNyjMQ/+qKo8jxJ1dShXM+sS20eTOrDXztzzEX6z63MfQb/g gD/FNHme6L1n5KiFpZ/5+wt9vL/4ke3XJJ8HZivwfHfZ3bSRPwv+UKygUue1GYkLFz7u YXZcIka/kAABYQ4CVZld1pmvPlqAPUK+Zgdbf+b19He08HL+ir5Uj9Q72+fb5lWexDq5 Ew4Q== X-Gm-Message-State: AHYfb5g7ybqutnRd1C0hCXlxFTSSdkz7GzioYE9QlbsNp/2040vwkUaB wRvdj7FgVATR3lRmVCooZkBdkslcnA== X-Received: by 10.28.55.69 with SMTP id e66mr4027839wma.9.1502691711241; Sun, 13 Aug 2017 23:21:51 -0700 (PDT) MIME-Version: 1.0 Received: by 10.223.146.231 with HTTP; Sun, 13 Aug 2017 23:21:10 -0700 (PDT) In-Reply-To: <2c0b1d32-bc9b-26e7-4c51-46bc6a2af40d@aldan.algebra.com> References: <2c0b1d32-bc9b-26e7-4c51-46bc6a2af40d@aldan.algebra.com> From: "Jack L." Date: Sun, 13 Aug 2017 23:21:10 -0700 Message-ID: Subject: Re: ada vs. da? To: "Mikhail T." Cc: freebsd-hardware@freebsd.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Aug 2017 06:21:54 -0000 ada and da are different. Your ada's are your atapi disk devices (sata). The da's are direct attached (usb sticks and scsi devices) which show as not attached. On Sun, Aug 13, 2017 at 9:55 PM, Mikhail T. wrote: > The four AHCI-drives in my system appear as both adaX and daX each: > > at scbus2 target 0 lun 0 (ada1,pass2) > at scbus3 target 0 lun 0 (ada2,pass3) > at scbus5 target 0 lun 0 (ada3,pass4) > at scbus6 target 0 lun 0 (ada4,pass5) > at scbus7 target 0 lun 0 (da0,pass6) > at scbus7 target 0 lun 1 (da1,pass7) > at scbus7 target 0 lun 2 (da2,pass8) > at scbus7 target 0 lun 3 (da3,pass9) > > Each one is listed in /var/run/dmesg.boot like this: > > ada2: ATA8-ACS SATA 3.x device > ada2: Serial Number Z1F1E8NK > ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) > ada2: Command Queueing enabled > ada2: 2861588MB (5860533168 512 byte sectors) > ada2: quirks=0x1<4K> > ada2: Previously was known as ad8 > da2: Removable Direct Access SPC-3 > SCSI device > da2: Serial Number 000000000195 > da2: 40.000MB/s transfers > da2: Attempt to query device size failed: NOT READY, Medium not present > da2: quirks=0x3 > > What am I supposed to make of it? Can they be accessed through either name? > What are the advantages of each? If ada is always a better choice, how do I > make the da ones disappear -- such as from the systat's output? Thanks! > > -mi > > _______________________________________________ > freebsd-hardware@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hardware > To unsubscribe, send any mail to "freebsd-hardware-unsubscribe@freebsd.org"