From owner-freebsd-hardware@freebsd.org Thu Sep 13 17:50:18 2018 Return-Path: Delivered-To: freebsd-hardware@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E81611094CDB for ; Thu, 13 Sep 2018 17:50:17 +0000 (UTC) (envelope-from leeb@ratnaling.org) Received: from mail-it0-x236.google.com (mail-it0-x236.google.com [IPv6:2607:f8b0:4001:c0b::236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6E6787BC62 for ; Thu, 13 Sep 2018 17:50:17 +0000 (UTC) (envelope-from leeb@ratnaling.org) Received: by mail-it0-x236.google.com with SMTP id p79-v6so9006734itp.3 for ; Thu, 13 Sep 2018 10:50:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ratnaling-org.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=NTDGrccEI7VUhh3F5IB1HmnIYgzdcxMCY5niBhqzaTI=; b=PX9B9ZlyV55HjYTvts7Lb+c018D3AkuGaGLQphYb4D2K3xjDYYpguIGLO5u38Pe2F5 YxZq0gghgYoME5E1+2ZvbJlu/TFZQDmW42l3+EBZBTcHkIEc+4N4YJKYVbRIfS8+AGh7 sxg9G/Son/22Lho27EeduuRIiGjPGmcCx/UoRRSaRQ81b/HtKpnCpqoAN6R6yxM1tawd aGlMGCitvaGx37IkbMHS1WDDnPsh61P02h50lTfiyIa04FW09OKIHrj+1kLKCnBFZPLp 1C6VKn7sFJHmXYP6Kgr7wO8JGhXhXczY/ibFaQumcQh+dqmctbliR8GRmIIS4b+1/c6I CVBw== 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=NTDGrccEI7VUhh3F5IB1HmnIYgzdcxMCY5niBhqzaTI=; b=O7tdEnVwHtNzsHRPuSbfKaeJfan/wJ8aZJQy2bJZk++R7Tfch9lxuzfa8tqn2qy0WP Y4TzeeWUkPh6XIanlE0mfewgizygN28D+oAFZ3Z7h/wxXEIfHY9uiU72kqhmD3TUIzHh hBuVV0CBmXmA9XvWmgwDvKRttMV7pIXaQTRwKlYoJVKmr5NuFHn1XIhE+jewJplFGvrP Lea4u/SYLSwkiwAxbQ7eVB0s5Py9H9CWFz/Z5q+eHhdHZ7py1fygdDLGFnR8PZ+w0w8/ HEJvSkxfYPOUcLVvtLQ81eaLCrey7xcG/IW9RwLULBWwYZQ58Mt6UwLUA+xsVuGG4SYP 22Rw== X-Gm-Message-State: APzg51DzBhc2/2NoctJ7sIec8CPrpl1/2laIHJbIvprrgIz1/htKpL+m +pMfFpFqvGOTMRydEmAfOEv5ivb02MDpP3Mn8c7ruxB2uMw= X-Google-Smtp-Source: ANB0Vda0HwGlCBls3gfApPBN34zT68WcBmFiPjHgN45DKK/pgnzCuOV5+bItSwRJKCBNvC0+ds3XP+3ijUrTAmCWeqg= X-Received: by 2002:a24:ac44:: with SMTP id m4-v6mr6996235iti.90.1536861016610; Thu, 13 Sep 2018 10:50:16 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a4f:d104:0:0:0:0:0 with HTTP; Thu, 13 Sep 2018 10:50:15 -0700 (PDT) In-Reply-To: <1536854606.4023246.1507062808.200A7C5B@webmail.messagingengine.com> References: <1536854606.4023246.1507062808.200A7C5B@webmail.messagingengine.com> From: Lee Brown Date: Thu, 13 Sep 2018 10:50:15 -0700 Message-ID: Subject: Re: Dell SAS6IR is it worth the effort to convert to IT To: Josh Paetzel Cc: freebsd-hardware@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.27 X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Sep 2018 17:50:18 -0000 On Thu, Sep 13, 2018 at 9:03 AM, Josh Paetzel wrote: > > > On Thu, Sep 13, 2018, at 10:58 AM, Lee Brown wrote: > > Hi, > > > > I'm in the process of setting up an old PowerEdge R410 which has, I > > believe, the LSI Logic AS1068, using the mpt driver. > > > > I'm not interested in running it as a hardware RAID but rather a > > geli(authentication only)+gmirror+gjournal. > > > > It seems like flashing it requires booting into dos, which frankly I > can't > > be bothered with. mptutil doesn't appear to have that capability. > > > > Are there any major downsides to running it in IR mode as two disks? > > There's no option to turn off the write-cache, but being battery backed > the > > only danger I see with that is if the machine is powered with pending > > writes on the card and the battery gives out before power is restored. > > > > The use case is routing/snort IPS with minimal logging, so disk > performance > > isn't critical. It will be the redundant router so mostly doing nothing > > except the little work OSPF needs. > > > > Thanks in advance for any comments -- lee > > _______________________________________________ > > 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" > > On those controllers IR mode is just IT mode with the ability to create > RAID. If you don't create a RAID array it behaves exactly like an IT > controller. > > And yes, FreeBSD mptutil doesn't have the ability to erase the flash, > which you need to be able to do to go from IR to IT. DOS is the typical > answer for that. > Thanks a lot Josh, most appreciated.