From owner-freebsd-hardware@freebsd.org Thu Sep 13 16:03:33 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 C932A1091E50 for ; Thu, 13 Sep 2018 16:03:33 +0000 (UTC) (envelope-from josh@tcbug.org) Received: from out1-smtp.messagingengine.com (out1-smtp.messagingengine.com [66.111.4.25]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 7842A7720A for ; Thu, 13 Sep 2018 16:03:33 +0000 (UTC) (envelope-from josh@tcbug.org) Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id E551921E06 for ; Thu, 13 Sep 2018 12:03:26 -0400 (EDT) Received: from web2 ([10.202.2.212]) by compute1.internal (MEProxy); Thu, 13 Sep 2018 12:03:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; bh=I6U8O3 AgWVGUQ8lkHmUa8VSiJUiiH8Idflzzf8kdXt0=; b=No8wQ2ZH/SYtTFMRh6sH0l DCSV6qgDS5BPtlfGH/0/ol+kKowgAIjwicRTEPf5oJEaB54jzrVOQROxk8FPwGZH lQN6QpcEWwReOjSQ2eqvFYS8g1ADQRwSThqd0w1FmaW66h0gLik4i593Sz0iz0H/ dHjeqid+m0ry/0orjgW1sZFZaPMWkMc0wXQhmqkyu+OSAmnWq2LtTtZuLWfYvmEe gXmou+ma+dlPGorzEEoX3d3WikCaTJakRhcwCu4o0qxfc6Fa41x8OWtbXbHYESuy Qi/KTWKhfwFLVNvV3oXfVuCFfFY2NsseZOoqWEQAqA8u4bdNnv9DK8R79qASggCw == X-ME-Proxy: X-ME-Sender: Received: by mailuser.nyi.internal (Postfix, from userid 99) id 302AD621E9; Thu, 13 Sep 2018 12:03:26 -0400 (EDT) Message-Id: <1536854606.4023246.1507062808.200A7C5B@webmail.messagingengine.com> From: Josh Paetzel To: freebsd-hardware@freebsd.org MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" X-Mailer: MessagingEngine.com Webmail Interface - ajax-e556cd15 Date: Thu, 13 Sep 2018 11:03:26 -0500 In-Reply-To: References: Subject: Re: Dell SAS6IR is it worth the effort to convert to IT 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 16:03:34 -0000 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, Josh Paetzel